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• no boot menu or / mount point after installing Ubuntu 12.04

  - by Liz Kaiser

  I've installed Ubuntu 12.04 using a Live CD to a new Gateway computer with Windows 7. I used "Install Alongside Windows" option. But on restart there was no boot menu. It only starts into Windows. I looked at partitions using GParted (with Live CD) and it shows my new Ext 4 partition for Ubuntu as follows sda4 Extended, sda5 Ext 4, sda6 linux-swap But there is no / Mount Point listed for the sda5 partition. I did try Boot-Repair but it did nothing. So I've got 2 problems: no GRUB menu and no / Mount Point for my ext 4 partition. I'm so exasperated. Do I have to edit the fstab file to create a / mount point? (And that prospect really scares me.) And if I do, could someone give me step by step instructions. In order to avoid this detailed and scary stuff in the Terminal (which I really do not know very much about), I deleted the ubuntu partitions and started all over installing 12.04 again. But I'm left in the exact same situation now. Thanks for any help you all can provide. Is there an easy way out of this?

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• Not enough disk space '/' in AWS instance

  - by Sumant

  i am running Ubuntu 11.04 instance for my Web Server on AWS cloud, now i am getting there is no disk space in / partition of my server. df -ah say this Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.9G 7.8G 97M 99% / proc 0 0 0 - /proc none 0 0 0 - /sys fusectl 0 0 0 - /sys/fs/fuse/connections none 0 0 0 - /sys/kernel/debug none 0 0 0 - /sys/kernel/security none 3.7G 112K 3.7G 1% /dev none 0 0 0 - /dev/pts none 3.7G 0 3.7G 0% /dev/shm none 3.7G 80K 3.7G 1% /var/run none 3.7G 0 3.7G 0% /var/lock /dev/xvdb 414G 16G 377G 4% /mnt Now i have Tried these thing for getting some extra space on / partition Clean up All Log files for Apache. Removed all unnecessary files from server. Home directory Cleanup. But Still I am not getting enough space. This Instance type is m1.large with 8GB EBS. Now i am getting i have enough disk space in /dev/xvdb. Is there a way i can allocate some diskspace to / from /dev/xvdb or Any other Ways. Please suggest me the possible solution for this.Is it possible to use the same /dev/xvdb partition with another instance.

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• Wubi installation broken by update - now unable to mount

  - by Outspaced

  As of today, my wubi installation of Ubuntu won't boot (goes straight to 'minimal bash-like interface) and I am unable to mount it when I boot straight to Ubuntu. If I boot straight into Ubuntu (not using Wubi, not going via Windows), I am able to mount the Windows partition and see the Wubi partition there: sudo mount -t ntfs /dev/sda5 /media/winxp And from there I can see the wubi root disk: /media/winxp/ubuntu/disks/root.disk But if I try to mount this: sudo mount -o loop /media/winxp/ubuntu/disks/root.disk /media/wubi I get an error: /media/winxp/ubuntu/disks/root.disk Input/Output Error If I then try fsck: sudo fsck /media/winxp/ubuntu/disks/root.disk I get this: Input/Output Error while trying to open /media/winxp/ubuntu/disks/root.disk The Superblock could not be read or does not describe a correct etx2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt and you might want to try running e2fsk with an alternate superblock: e2fsck -b 8193 <device ... this gives me the same result. There is data on this partition that I really need to be able to access, so I can't delete and reinstall. Any help much appreciated. Thanks.

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• Problems dualbooting Ubuntu because of UEFI

  - by Koffeehaus

  I have an X-series Asus laptop which I just bough about a month ago. I want to dualboot Ubuntu - Windows. I can easily access LiveUSB with both UEFI enabled and disabled. I heard that there were problems with UEFI, so I disabled it. After I've installed the system I couldn't access it. It just boots to Windows straight. Another unusual thing, that never happened to me before was that the partition editor wanted me to create a BIOS reserved area, which I did, but not at the beginning of the table. Any ideas how to access the Ubuntu partition? As far as I can guess both Windows and Ubuntu have to be both of the same type of boot, either Legacy or EFI. This is not the case of what I have now. So, if I reinstall Ubuntu in UEFI mode that correlates with my Windows type, will I then be able to boot into it? I have a constraint, my laptop doesn't have a CD ROM, so I cannot reinstall WIndows, nor can I move around the Windows recovery partition. This is the boot-repair report : http://paste.ubuntu.com/1354254/

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• Ubuntu on Samsung NP700Z5B - no Grub

  - by copolii

  I just bought a Samsung NP700Z5B laptop. Gorgeous machine and great performance! I do 2 things when I get a new laptop: Format the HD and install Winblows from a CD to ditch the bloatware Install some variant of Linux on it (lately Ubuntu) Step 1 worked fine (until earlier today), but I haven't been able to install Ubuntu on it for the past 3 days! I've tried Mint12, Ubuntu 12.04, Ubuntu 11.10, Ubuntu 11.04 and Ubuntu 10.04. The live CD and the installations all run fine and report no problems, but when I reboot grub is nowhere to be found! The system goes directly to Winblows! I've tried booting from the liveCD and re-installing grub via the chroot and purge & reinstall methods (https://help.ubuntu.com/community/Grub2) and neither makes a difference. I've also tried copying the boot sector: dd if=/dev/sda of=linux.bin bs=512 count=1 and putting it on c: then setting bcdedit to add the entry to the Windows bootloader with no results. Earlier today I decided to try and set my boot partition as an EFI boot partition ... bad choice, now I don't even have the Winblows boot loader. I've officially ran out of ideas. Tried calling Samsung, but they're closed (they'd probably say something stupid along the lines of "Samsung recommends Windows 7" ... I've had Dell say that to me). Any help would be greatly appreciated. Update 1 Tried re-installing 12.04 and now I get the screen continously turning off and back on, but still no sign of booting ... it has been doing it for 15 mins so far (I set the boot partition type to ext2 instead of ext4) Update 2 Well ... this just gets better and better. I inserted the installation USB key to reboot it and the flickering stopped for about a minute (remained on) then it started turning off and on again

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• How do I fix "Ubuntu is running in low-graphics mode?"

  - by Tortoise

  First off, I'm running Ubuntu 10.04 on a 30gb partition, the rest of my hdd is for a vista partition. The way I installed this was, I shrunk the vista partition and installed Ubuntu in the largest block of free space. Ubuntu has been working fine for a few weeks, and I've loved it, but today I was doing something in Vista (something simple) and I restarted to go back into ubuntu, and when it tried to boot up I got a message that said: "Ubuntu is running in low-graphics mode. Your screen, graphics card, and input devices could not be detected correctly. You will have to configure these yourself." I click OK, and it gives me a few options but all of them are dead ends. Basically, I'm stuck in CLI right now without a clue of how to fix it. I've tried doing a full update and it hasn't made a difference. I've already been asking for help in #Ubuntu and #Radeon and I was directed by some of them here, so I hope I can find some answers here. Also, I'm using an ATI Radeon X1200. Any help would be greatly appreciated. Another thing, while I was trying to get help in #radeon I was told that it could possibly be this bug.

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• SSD I/O extremely slow installing/booting Ubuntu 12.04

  - by Menda

  These are some useful specs: Macbook Pro 7,1 OWC Mercury Extreme Pro 2,5" SATA SSD (120 GB). Has SandForce driver. Ubuntu 12.04 Desktop 32 bits. One 18 GB partition for GNU/Linux and 1.5 GB for SWAP. MD5 for the Ubuntu install CD is OK. I tried to install Ubuntu. It seems that everything is recognized, but there's a big problem: read and writes to the SSD are extremely slow. For example, the install process, which shouldn't take more than 20 minutes, it takes 7 hours. Then, booting up the computer takes about 20 minutes. I checked and the problem is definitely the SSD. Every access to any file is like 10 times slower than normal. I have tried to format the partition as Ext4 and Ext3 with the same problem. Trying to install other distros like Fedora 17, I have a similar problem. There's a "lag" with the SSD, but not so accused as in Ubuntu. Surprisingly, Debian 6.0 installs and works without any problem. Mac OS works pretty good as well in the other partition, so I discard it's an SSD problem. Thanks for your help!

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• Windows 8.1 - unfixable grub

  - by Nick

  I have a Gigabyte laptop that came with secure boot and windows 8. After a bit of battling, I managed to get my dual boot with Ubuntu 13.10.. Anyway, I upgraded zindows to 8.1, now grub is gone. I restarted from a live CD and chrooted to my drive. I used boot-repair multiple times (with successful output) both in default and with some advanced options; also reinstalled grub manually... Each time it tries once to boot to grub but gives a message for a very short amount of time. I recorded it and it is a regular bios message "Rebbot and Select proper Boot device of Insert Boot media in selected boot device and press a key" I even tried something called EasyBCD under winblows, it shows the correct boot options, but same there, it is unable to make the linux partition fire up. Anyway, no way to boot my linux box. Does anyone have an idea how to fix this? No need to redirect me to another post with grub reinstall or boot-repair, seen them all... I am thinking of trying this other boot loader, refind, to see if it works http://www.rodsbooks.com/refind/index.html Also re-reading this bios message, I'm thinking my partition might not have a boot flag anymore... I'll try that too with parted. Although both grub and win 8 are supposed to fire up from the same boot partition (the EFI one) Please help! thx

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• Ubuntu 12.04 still slow at mounting internal filesystem

  - by Matthew Goson

  I'm using Toshiba laptop with this configuration: - CPU: Core i5, 2.4GHz - RAM: 4GB - Graphics card: Intel - Hard disk: 500GB SATA I installed Ubuntu 12.04 64bit and got the same issue with this guy Very slow boot due to mounting filesytem, I tried all suggestions there but the slow boot issue still here. Here's a part of my dmesg: [ 2.041015] usbhid: USB HID core driver [ 2.101378] usb 1-1.6: new full-speed USB device number 5 using ehci_hcd [ 2.137980] atl1c 0000:04:00.0: version 1.0.1.0-NAPI [ 2.779080] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null) [ 22.822597] udevd[381]: starting version 175 [ 22.837954] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 22.850837] lp: driver loaded but no devices found [ 23.003822] Adding 7079096k swap on /dev/sda7. Priority:-1 extents:1 across:7079096k [ 23.407915] mei: module is from the staging directory, the quality is unknown, you have been warned. [ 23.408153] mei 0000:00:16.0: PCI->APIC IRQ transform: INT A -> IRQ 16 [ 23.408160] mei 0000:00:16.0: setting latency timer to 64 [ 23.408211] mei 0000:00:16.0: irq 44 for MSI/MSI-X [ 23.433196] [drm] Initialized drm 1.1.0 20060810 Additional information: my sda1 is a primary NTFS partition, sda2 is a primary ext4 partition which I installed Ubuntu onto. Other partitions are inside an extended partition.

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• Cannot boot after installing ubuntu on lenovo x120e

  - by tutysara

  I have installed ubuntu 11.10 on my x120e using amd64 alternate iso image. The installation went fine, but it is having issues while booting after a successful installation, it says - "No Operating System Found". I followed the instruction at - help.ubuntu.com/community/X120e#Installation to purge grub-efi and installed grub-pc, even then I couldn't boot into ubuntu.(got the same "No Operating System Found") This is the file from boot-repair with this setup - http://pastebin.ubuntu.com/926556/ Then I asked in #ubuntu and they suggested me to create a bios-boot partition, I was not very comfortable with the solution they had suggested but gave it a try anyhow. I re-sized my initial partition and made 4 MB free space in the beginning of the partition and had set the flag bios_grub. Re-installed ubuntu 11.10 this time using amd64 desktop iso image file. Installation went fine as before but finally this time also the system didn't boot, it gave the same - "No Operating System Found" message. In BIOS I have the settings as to use both (Legacy and UEFI) and with UEFI tried first. This is the boot-repair file from my latest setup - http://pastebin.ubuntu.com/926761 Any help/suggestions are appreciated.

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• Dual boot Ubuntu 12.10 and Linux Mint 13

  - by user101693

  I know this question has been asked so many times, but I don't know what should I do in my case with those tutorials available everywhere. This is how my current situation looks like: Right now I'm using Linux Mint 13 Xfce installed with: 500MB of /boot 2GB of swap 15GB of / The rest of my space is /home with no space left in my hard drive And I just got a Ubuntu 12.10 live CD from my friend, and I intended to install it alongside my Linux Mint. And I want to select something else in the installation process. The question is: I want to use the same /home partition for Ubuntu and Linux Mint with same user but different directory because I don't want my configuration files conflict with each other. For example my username is Budiman and I want a directory named /home/budiman-Ubuntu for Ubuntu and /home/budiman-LinuxMint for Linux Mint. How can I do that? I read it somewhere said that I can share /boot and swap with multiple Distro, is it true? How can I make another /root directory for Ubuntu since I don't have any space left in my hard drive? Can I resize the /home partition without losing my data? How can I do that if it's possible? Now I've used 10-20% of my /home partition. I really hope somebody can help me with my question, if possible with a full tutorial starting from install with something else step until completion of the process. Thanks before :)

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• Ubuntu 12.10 wont boot

  - by John Mark High

  im new to using Ubuntu and just bought a HP Pavilion g6-2240sa with windows 8 pre installed. I made a bootable USB with Ubuntu on it and installed alsongside windows, for 2 days it worked fine, I got into Ubuntu by doing an advanced restart from windows 8 and then booting Ubuntu from the partition it made. When i did the advanced restart today there was only 1 HDD i could select ( there were 3 before windows, a restore partition that was already there when i got the computer and Ubuntu) so i booted from the USB again and re-installed Ubuntu. then did an advanced restart and the 3 partitions where there again, i booted from Ubuntu and now heres my problem. I get the Ubuntu background when its loading then its just a black screen with some writing, its not on long enough to read, then just a black screen with a white _ and the top left corner that does nothing, i have to restat the computer and it auto boots into windows 8. im a little confused as the first time i installed Ubuntu it worked fine until the partition dissaperd), the second time i installed i did everything the same except it found the old Ubuntu so i reinstalled it and now is donst work.

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• Problems to boot, Ubuntu entry does not work anymore

  - by user104108

  A few months I decided to install Ubuntu 12.04 on my PC alongside with my Windows 7 partition. In order to do that and avoid any mistake, I followed these steps: http://www.linuxbsdos.com/2012/05/17/how-to-dual-boot-ubuntu-12-04-and-windows-7/2/ Everything was going well until I decided to update to the 12.10 realese. I don't know what happened, but after I updated my Ubuntu, it stoped working, it didn't even launched, when I turned on my pc and choose to run "Ubuntu 12.04" on the Grub Screen, a weird messaged appeared. Well, so I decided to install the Ubuntu 12.10 and forget about the 12.04 partition, no problem. I erased the partitions used for the Ubuntu 12.04 with EaseUS partition Manager. However, when I start my PC, there is still the option of "Ubuntu 12.04" to chose, is that bad? And what about now, can I use the Windows Installer of Ubuntu ( http://www.ubuntu.com/download/help/install-ubuntu-with-windows ) to install the Ubuntu 12.10 ? What should I do to have Ubuntu 12.10 and Windows 7 in dual boot again? Thanks; Thales.

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• ubuntu live cd start up error

  - by Emiel

  First off, I'm new to the Linux scene. This is my first attempt to make a single boot installation for Ubuntu. I tried it for a few days in dual boot with win7 and I was sold, so i removed the tumor my pc had to endure for so long (sorry laptop) and installed Ubuntu from an usb boot device. My dual boot was as follows: Windows 7 was installed on partition C from hdd1, the windows installer for Ubuntu installed Ubuntu on partition I on that same hdd, hdd1. In the live cd installation I did the normal execution for removing windows and it said that after the installation my partition would be 320gb big, that is the total size of my hdd, so I automatically assumed that it would format my whole hdd. Now the installation has completed and it tells me to restart my system, and here comes the problem: now I get a dashing white cursor on my screen after the BIOS load and it won't budge... it just stands there and it doesn't move on or load Ubuntu, the system gets very hot at this point... Then I tried to reinstall using the same live CD, it is still on my USB drive, but when I boot from the USB, I get the error: no such file with some address and the a grub rescue. What to do? I can get hold of a win7 copy, but I don't really want to use that crap again... Thanks for helping me out. Kind regards, Emiel

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• Am I running out of memory or do I have two logical drives instead of one

  - by user30904

  I did a complete reinstall of Ubuntu 13.04 a couple of months ago. Since then, I have switched out my motherboard with another. I kept the same hard drive. I just did an upgrade to 13.10. Recently, after this install, I keep getting the message that I'm running out of memory. I just checked my system usage and was surprised by what I found. I believed that I installed Ubuntu as a fresh install but when I check the system usage, it seems like there are two logical drives. I just did the basic install, so I was only expecting to see one partition but instead I see two. One is a small 300mb partition, the other is a 300gb partition I was expecting. Can anyone tell me if I have two partitions and/or logical drives and if so how I can fix this? I seem to have been running on the smaller drive and now I'm obviously out of space. I want to be able to use the bigger one at least.

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• Is it OK to create all primary partitions.?

  - by james

  I have a 320GB hard disk. I only use either ubuntu or kubuntu (12.04 for now). I don't want to use windows or any other dual boot os. And i need only 3 partitions on my hard disk. One for the OS and remaining two for data storage. I don't want to create swap also. Now can i create all primary partitions on the hard disk. Are there any disadvantages in doing so. If all the partitions are primary i think i can easily resize partitions in future. On second thought i have the idea of using seperate partition for /home. Is it good practice . If i have to do this, i will create 4 partitions all primary. In any case i don't want to create more than 4 partitions . And i know the limit will be 4. So is it safe to create all 3 or 4 primary partitions. Pls suggest me, What are the good practices . (previously i used win-xp and win-7 on dual boot with 2 primary partitions and that bugged me somehow i don't remember. Since then i felt there should be only one primary partition in a hard disk.) EDIT 1 : Now i will use four partitions in the sequence - / , /home , /for-data , /swap . I have another question. Does a partition need continuous blocks on the disk. I mean if i want to resize partitions later, can i add space from sda3 to sda1. Is it possible and is it safe to do ?

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• How to set individual NTFS partitions permissions behaviour for each user account?

  - by ryniek

  I have two NTFS partitions (DOWNLOADS for downloaded files and VM for my VirtualBox .vdi file) for which i must have full permissions for my allday use account. They should be also automounting when i login to this account. But i've also set Guest account for guests. For Guest account, i want make VM partition fully disabled and invisible (and thus it mustn't automount) but DOWNLOADS partition should be shared with limited privileges with Guest account. Editing fstab i'm able to share DOWNLOADS partition with Guest on limited privileges but VM can be only set to limited and have disabled automounting - so guest can't mount it but it still can be seen in Nautilus, plus I must always mount it manually when i login to allday account. Is there some trick to make what i want? Here's my fstab config: # /etc/fstab: static file system information. # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 #Entry for /dev/sda1 : UUID=35e66658-5ee9-40cf-bf56-8204959e3df0 / xfs defaults 01 #Entry for /dev/sda2 : UUID=26c714cf-4236-45e7-9c46-cfcf91a215ae /home xfs defaults 02 #Entry for /dev/sda5 : UUID=1315BCB027C44639 /media/DOWNLOADS ntfs-3g auto,uid=1000,gid=1000,umask=0022,nodev,locale=pl_PL.utf8 0 0 #Entry for /dev/sda6 : UUID=60FF39EB72B72264 /media/VM ntfs noauto,uid=1000,gid=1000,umask=0077,nodev,locale=pl_PL.utf8 0 0 #Entry for /dev/sda7 : UUID=c52411f5-105c-45d1-971f-412f962c350e none swap sw 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0 Thanks

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• Will Ubuntu Live CD move MFT to resize NTFS volumes?

  - by irwazr

  I have a feeling some will consider this a duplicate, but please hear me out. I've been reading tons of questions and threads around this but have never really found an answer for this specifically. I want to shrink my NTFS partition to make room for a Ubuntu install, so I can dual boot them. However when shrinking the NTFS volume in Windows disk management, it will only go so far as the MFT is sitting near the end of the volume. I've read plenty of posts about why it does this, and how difficult/dangerous it is to move the MFT etc. I've also read that Perfect Disk can apparently do it under it's trial period, but I remain cautious to try this method. I was wondering however if the disk partitioning utility included in the Ubuntu install wizard handles the moving of the MFT when dragging the partition boundaries. It all seems too simple that you simply tell it the new size you want it to be. Would it tell me if it couldn't resize by the amount you requested if the MFT was an issue, or move it for you if it were able. I'm concerned it might corrupt the MFT and the volume, even though I doubt the install wizard would be so daft. So what exactly is the deal with the partition resizing tool in the Ubuntu install wizard? Will it safely resize my NTFS volume despite the location of my MFT? Thanks in advance.

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• How to repair ubuntu or restore my windows 7 installation? Nothing helps

  - by AFRIKA

  i had windows 7 installed and I installed ubuntu alongside it. Booted ubuntu and explore it for a while. Turned pc off and went to bed. Next morning wanted to boot into windows but no luck... MBR error... Tried to repair windows using installation disk but it doesn't recognize win installation. Tried console bootrec /fixmbr bootrec /fixboot but still same. So I went back to ubuntu and tried with boot-repair, but got a write error. Restarted pc and now I cannot boot to either ubuntu or windows... Tried to recover NTFS partition with hiren's boot but it cannot find partition. Tried every solution there is on the web but no help... Is there any way to fix it because windows installation is very important to me?! btw, i noticed that grub indicates windows 7 to a sdb2 partition that doesn't exists... And when I RUN ubuntu from CD and browse disk, I dont see any files from windows 7. Is that normal or? http://paste.ubuntu.com/6338340/ PLEASE HELP...

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• Move entire OS from NTFS drive to bigger ext4 drive.

  - by pangel

  According to SMART data, the hard drive I curently use is about to fail. I bought a new, bigger drive to copy the system to a safer place. The old drive is 160GB. Ubuntu was installed with Wubi, and the partition is NTFS. There are a few other partitions around (recovery partition, swap...) that I don't care about. The new drive is 320GB. I would like the new system to run on ext4, not on NTFS. I looked at solutions that use dd, or clonezilla, but it seems that moving to a different filesystem prevents me from using them. I considered installing a brand new ubuntu on the new hard drive and then copy /home from the old drive to the new drive, but I heard that there would be file permission problems. I would also have to reinstall all my software. One last thing: the NTFS drive has dead sectors. I don't know how this can influence the copy process, but I mention it just in case. edit: I do not care about the windows partition. I just want Ubuntu to make the transition.

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• ubuntu doesn't boot without flash drive

  - by Kasisnu

  i just installed ubuntu 11.04 onto this netbook. I had to use a flash key . during the install , i tried putting ubuntu on a separate partition , but it kept showing a 'no root file system is defined'. i didn't really know what i could do to fix it , so i decided to install it alongside windows. i have a windows 7 installation which works perfectly fine. So , the installation goes through perfectly . i give both OS's 40 Gigs of space . The comp restarts and NOTHING !. The computer boots directly into windows. During the install it said i'm supposed to be prompted at boot, and nothing happened. Ubuntu partitioned the C: drive but this partition doesn't show up in windows. If i boot using the flash drive, it shows the partition with the ubuntu installation. I tried reinstalling but now i don't get the prompt to asking me to install ubuntu. Really confused ..

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• Dual Booting WIndows 7 and Ubuntu 12.04

  - by mfes

  I have Windows 7 32 bit installed on a 64 bit Laptop. I am trying to install Ubuntu 12.04.I am trying to install Ubuntu 12.04 using USB. I created the bootable usb using live usb installer. I have 6 partitions in Windows 7 of which in Windows 7, I created a partition of 50 GB and also having an unallocated space of 50 Gb. I will install Ubuntu 12.04 in any one of these space. When I am booting from USB and selecting the option of "Try Ubuntu" and In Ubuntu desktop, when I click "Install Ubuntu 12.04" , and choosing the option as " Something Else " ( I dont want to Install Ubuntu alongside Windows or want to erase Windows totally ), only 3 paritions getting listed. One is system memory reserved as 100 mb. Second is C drive and third partition is listed as a whole space ie remaining space of the entire hard disk is listed instead of partitions. I tried Gparted Editor and it also lists the same as Ubuntu 12.04 So whats the problem and how can I make the Ubuntu to detect all the partitions so that I can install in the unallocated space or in the 50 GB Partition ? ( P.S - When I try the same in my 32 bit desktop, it is detecting all the partitions )

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• Analysis Services (SSAS) - Unexpected Internal Error when processing (ProcessUpdate). Workaround/Resolution

  - by James Rogers

  Many implementations require the use of ProcessUpdate to support Type 1 slowly changing dimensions. ProcessUpdate drops all of the affected indexes and aggregations in partitions affected by data that changes in the Dimension on which the ProcessUpdate is being performed. Twice now I have had situations where the processing fails with "Internal error: An unexpected exception occurred." Any subsequent ProcessUpdate processing will also fail with the same error. In talking with Microsoft the issue is corrupt indexes for the Dimension(s) being processed in the partitions of the affected measure group. I cannot guarantee that the following will correct your problem but it did in my case and saved us quite a bit of down time.   Workaround: ProcessIndexes on the entire cube that is being processed and throwing the error. This corrected the problem on both 2008 and 2008 R2.   Pros:  Does not require a complete rebuild of the data (ProcessFull) for either the Dimension or Cube. User access can continue while this ProcessIndexes in underway.   Cons: Can take a long time, especially on large cubes with many partitions, dimensions and/or aggregations. Query Performance is usually severely impacted due to the memory and CPU requirements for Aggregation and Index building   <Batch http://schemas.microsoft.com/analysisservices/2003/engine"http://schemas.microsoft.com/analysisservices/2003/engine">  <Parallel>     <Process xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ddl2="http://schemas.microsoft.com/analysisservices/2003/engine/2" xmlns:ddl2_2="http://schemas.microsoft.com/analysisservices/2003/engine/2/2" xmlns:ddl100_100="http://schemas.microsoft.com/analysisservices/2008/engine/100/100" xmlns:ddl200="http://schemas.microsoft.com/analysisservices/2010/engine/200" xmlns:ddl200_200="http://schemas.microsoft.com/analysisservices/2010/engine/200/200">       <Object>         <DatabaseID>MyDatabase</DatabaseID>         <CubeID>MyCube</CubeID>       </Object>       <Type>ProcessIndexes</Type>       <WriteBackTableCreation>UseExisting</WriteBackTableCreation>     </Process>  </Parallel> </Batch>   The cube where the corruption exists can be found by having Profiler running while the ProcessUpdate is executing. The first partition that displays the "The Job has ended in failure." message in the TextData column will be part of the cube/measuregroup that has the corruption. You can try to run ProcessIndexes on just that measure group. This may correct the problem and save additional time if you have other large measure groups in the cube that are not affected by the corruption.   Remember to execute your normal ProcessUpdate batch after the successful completion of the ProcessIndexes. The ProcessIndexes does not pick up data changes.   Things that did not work: ProcessClearIndexes - why this doesn't work and ProcessIndexes does is unclear at this point. ProcessFull on the partition in question. In my latest case, this would clear up the problem for that partition. However, the next partition the ProcessUpdate touched that had data in it would generate and error. This leads me to believe the corruption problem will exist in all partitions in the affected measure group that have data in them.   NOTE: I experience this problem in both a SQL 2008 and SQL 2008 R2 Analysis Services environment, on separate built from the same relational database. This leads me to believe that some data condition in the tables used for the Dimension processing caused the corruption since the two environments were on physically separate hardware. I am waiting on Microsoft to analyze the dumps to give us more insight into what actually caused the corruption and will update this post accordingly.

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• windows 2003 server : can't join domain

  - by phill

  I originally tried to rejoin a computer to a network which led to a "cannot find domain" error. The username/password box don't even come up. some tests i ran: I can ping the server, however I can't ping the domain name domain1.local. nslookup can't find the domain either. It looks to the isp's dns instead of my own to resolve the local machines. So i go to the dns and run netdiag.exe and gives me this error. DNS test . . . . . . . . . . . . . : Failed [WARNING] Cannot find a primary authoritative DNS server for the name 'stmartinsrv.stmartin.local.'. [RCODE_SERVER_FAILURE] The name 'srv.domain1.local.' may not be registered in DNS. [WARNING] The DNS entries for this DC are not registered correctly on DNS se rver '68.94.156.1'. Please wait for 30 minutes for DNS server replication. [WARNING] The DNS entries for this DC are not registered correctly on DNS se rver '68.94.157.1'. Please wait for 30 minutes for DNS server replication. [FATAL] No DNS servers have the DNS records for this DC registered. Redir and Browser test . . . . . . : Passed List of NetBt transports currently bound to the Redir NetBT_Tcpip_{04BB0F6B-06AE-4D60-80C8-2A7A24C1D87B} The redir is bound to 1 NetBt transport. List of NetBt transports currently bound to the browser NetBT_Tcpip_{04BB0F6B-06AE-4D60-80C8-2A7A24C1D87B} The browser is bound to 1 NetBt transport. then running dcdiag C:\Program Files\Support Toolsdcdiag Domain Controller Diagnosis Performing initial setup: Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\SRV Starting test: Connectivity The host 1c99f63c-49ec-40db-b3d3-6265c00fbd3e._msdcs.domain1.local cou ld not be resolved to an IP address. Check the DNS server, DHCP, server name, etc Although the Guid DNS name (1c99f63c-49ec-40db-b3d3-6265c00fbd3e._msdcs.domain1.local) couldn't be resolved, the server name (srv.domain1.local) resolved to the IP address (192.168.1.21) and was pingable. Check that the IP address is registered correctly with the DNS server. ......................... SRV failed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\SRV Skipping all tests, because server SRV is not responding to directory service requests Running partition tests on : ForestDnsZones Starting test: CrossRefValidation ......................... ForestDnsZones passed test CrossRefValidation Starting test: CheckSDRefDom ......................... ForestDnsZones passed test CheckSDRefDom Running partition tests on : DomainDnsZones Starting test: CrossRefValidation ......................... DomainDnsZones passed test CrossRefValidation Starting test: CheckSDRefDom ......................... DomainDnsZones passed test CheckSDRefDom Running partition tests on : Schema Starting test: CrossRefValidation ......................... Schema passed test CrossRefValidation Starting test: CheckSDRefDom ......................... Schema passed test CheckSDRefDom Running partition tests on : Configuration Starting test: CrossRefValidation ......................... Configuration passed test CrossRefValidation Starting test: CheckSDRefDom ......................... Configuration passed test CheckSDRefDom Running partition tests on : domain1 Starting test: CrossRefValidation ......................... domain1 passed test CrossRefValidation Starting test: CheckSDRefDom ......................... domain1 passed test CheckSDRefDom Running enterprise tests on : domain1.local Starting test: Intersite ......................... domain1.local passed test Intersite Starting test: FsmoCheck ......................... domain1.local passed test FsmoCheck from previous postings, I've tried adding the domain suffix to the nic ip properties to both the client machine and the dc server which didn't help. note: there is only one nic on the server any ideas? thanks in advance

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• Ubuntu 12.04 Bootloader failed to install

  - by Chris

  Sorry about the excessively long question, but I figured giving more information would be better. I recently bought a new desktop for myself, running Windows 7. It has two hard drives, and I wanted to install Ubuntu on a small partition on the second hard drive. I created 25GB "free space" in Windows and ran a LiveCD install. I wanted to select the install options myself but accidentally selected "Install alongside Windows 7," but it seemed to pick up the free space and installed itself there as I wanted it to. However, I was told that the bootloader installation had failed. I chose to "Cancel installation," leaving my computer unable to boot. I wiped my computer and reinstalled Windows. After that, I tried installing Ubuntu through Windows using WUBI, once using files from my LiveCD and once downloading everything again. Both times the install succeeded, but both times when I restarted and tried to load Ubuntu, it gave me an error - wubildr.mbr was corrupt or missing. I checked in Windows - it was indeed present on the C:\ drive. I went back to the LiveCD installation, this time going the custom options route. I assigned 16GB to an Ext4 journaling file system and 10GB to a swap file. I got the same bootloader error as before. Being prompted to select a different partition to install the bootloader to, I first tried the partition Ubuntu was installed on. A window came up saying that the install had succeeded, but a second window gave me the same error and choices as before. I went through every single option it gave me, including the Windows partition and the hard drives themselves (dev/sda, dev/sdb). Same result. I then chose to not install a bootloader. Windows still works fine, and I assume Ubuntu has installed but is unbootable. Knowing that my computer could potentially brick itself again - and, this time around, with a lot of data to lose and hassle to go through if I mess it up - I really don't want to do anything without some advice. So I'll ask this: a) Why did the bootloader fail to install? Can I fix the error and install Ubuntu fresh? b) Is there any way to get around the error, install the bootloader, and point it towards an existing installation of Ubuntu? c) Is there a quicker and easier solution I might have missed? EDIT: Thanks for the tip, AthloX. After testing the liveCD in Virtualbox with no installation problems, I looked around for some alternate bootloaders but had no success. I attempted another install, which installed the bootloader and Ubuntu just fine but bricked Windows 7. I wiped both hard disks clean, including some "System Reserved" partitions I hadn't noticed before, before re-installing Windows 7 on one hard drive and immediately afterwards installing Ubuntu on the other. Now the computer boots into Windows, but I can pop into the BIOS at startup to boot into Ubunbtu via it's bootloader, and I'm guessing it'll only take a bit of poking at the BIOS to swap the load order. Many thanks!

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