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  • Mount a LUKS partition at boot

    - by Adam Matan
    Hi, I have installed an Ubuntu machine with two encrypted LUKS partitions: one for / and one for /home. I've reinstalled the machine to upgrade to 10.04. Again, the / is installed using LUKS, and I'm able to mount the /home using: mkdir /media/home sudo cryptsetup luksOpen /dev/sda2 home sudo mount -t ext3 /dev/mapper/home /media/home The problem is, this cryptfs mapper disappears after boot, so I putting the appropriate line in fstab fails. How do I set the cryptfs to prompt for password and unlock the drive at boot? Thanks, Adam

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  • My Laptop Beeps when I try to USB boot install

    - by Gino
    I tried to boot install Ubuntu using my laptop (without CD Drive) using a USB drive, then it goes to the boot selection menu (the one with the Ubuntu logo installation options). I selected Install then my laptop just beeps - 1 short beep, after that it stops then nothing installs, it just stays at the installation menu, can someone please help? Laptop Specs Neo Notebook (forgot the model version) 2GB RAM running Win XP SP3 150GB Hard Drive memory Would really appreciate if someone helped, I just used the normal 12.04 installer.

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  • Why is my hard drive mounted on /boot?

    - by divided
    I was doing an update and it said that the drive was full. Here is df -h: Filesystem Size Used Avail Use% Mounted on 78G 2.7G 72G 4% / none 242M 184K 242M 1% /dev none 247M 0 247M 0% /dev/shm none 247M 48K 247M 1% /var/run none 247M 0 247M 0% /var/lock none 247M 0 247M 0% /lib/init/rw /dev/sda1 228M 225M 0 100% /boot How can I fix /dev/sda1 being mounted on /boot?

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  • Stop Windows boot

    - by Parley Applegate
    Installed Ubuntu over a Windows8 trial. After installation, Windows8 still tries to boot. Wiped disk clean with Acronis and reinstall Ubuntu. Windows8 still tries to start, but goes to blank screen. Ubuntu never tries to boot. Naturally live mode works fine. What do you think of wiping disk again, install Windows7 and try using GRUB approach or do you know how to remove Windows from the cleaned disk?

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  • Cannot boot from USB wtih ubuntu 13.10

    - by arunkant
    I downloaded ubuntu 13.10 amd64 iso and used all of following methods to make a install media. UNetBootin Universal USB installer (from windows) But I cannot boot from USB pen drive. Some time it just drop me in grub menu of previously installed ubuntu 13.04. Sometime it show a message "Could not open //fallback.efi: 14 ..." for a moment and then just stays there(blank screen). How to boot from USB pen drive?

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  • How to make my laptop dual boot(Windows Server 2008 and WIndows 7)?

    - by Dinesh
    I have Windows Server 2008 R2 Enterprise(Licensed Copy) installed in my Laptop. I have installed this to evaluate Latest 64 bit Products of Microsoft like Share point 2010 etc. Now i want to install Windows 7 Ultimate(Original) without removing the Server OS. Basically, i want to make my laptop Dual Boot. I tried To install Windows 7, but it not showing any options for making dual boot. Can anybody,please suggest the solution. I need to install immediately.

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  • Windows won't sleep after booting from grub

    - by mkasberg
    I recently added a second hard drive to my computer and I am using it do dual-boot Linux (Ubuntu 12.04) with Windows 7. Both hard drives are SATA. I am using the default grub bootloader on my second hard drive. The windows drive is unmodified. To get to grub, I changed the hard disk boot priority in my BIOS (P35-DS3L) to boot from the second drive. The problem I'm having is that when I boot to Windows 7 (on sda) from grub (on sdb), Windows 7 will not go to sleep (from the start menu). The display shuts off momentarily as if its going to sleep, then comes back on and displays the switch-user screen. Powercfg -lastwake does not show anything. I am sure that this is related to booting from grub on sdb because when I change the hard disk boot priority in the BIOS to boot from my (unmodified) Windows hard disk, the computer goes to sleep fine. It occurred to me that installing grub on sda might solve the problem, but I'd rather not since I like to have my windows hard disk unmodified so that booting to it from the BIOS boots directly to windows. A possible work around is to use the BIOS as a bootloader, by pressing F8 to select the boot device. Still, I'd like to know why the problem is happening in the first place.

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  • Can grub and BCD work simultaneously?

    - by wuputah
    Here's my setup. After I installed a new SSD, I have: Original Windows 7 on sdc1 (to be retired) Copy of Windows 7 on sdb2 A Windows system partition on sdb1 Ubuntu 12.04 on sda, /boot and ergo grub is on sda1 Grub is MBR on sda and set to boot from BIOS. I prefer to not change this; grub is much preferable as a boot manager. I've run update-grub from Ubuntu and grub seems to be correctly configured as all options are available: I can boot any of the 3 Windows partitions and Ubuntu. I also ran the repair tool to get Windows to add both installations to BCD. At present, choosing particular options seem to have no effect; the old version of Windows on sdc1 always boots. I don't understand what is causing this, but I can't figure out what. How does grub and BCD play along? I can't find any docs on this. My thought was to only boot Windows off sdb1, and then let BCD do the rest (present a menu to boot between sdb2 and sdc1, but I can't seem to get BCD to boot sdb2), but this has been unsuccessful. My configuration files: BCDEdit output grub.cfg

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  • Booting an Asus EeePC from a LiveCD USB stick

    - by Bryan
    I have two identical Asus EeePC netbooks that are both installed with Ubuntu. One of them was sitting on the closet shelf and the battery went completely dead. When I charged the battery and tried to boot the it, I got the "No init found" error. In trying to follow the suggested way to fix it posted here, I used the Startup Disk Creator on my Ubuntu 11.10 desktop machine to create a USB stick with a bootable Ubuntu 11.10 live CD on it (the netbook doesn't have a CD drive). I plugged the USB stick into the netbook with the init issues, went into the BIOS and selected the USB stick as the 1st choice to boot from, and did a hard restart. It then just stuck at the flashing underscore. Not knowing why it wasn't working, I tried booting my working netbook from the USB stick. When I got into the BIOS on the working netbook, I noticed the description in the boot order section for the USB device was different. On the non-working netbook, the description was SWISSBIT (the name of the USB stick) but on the working netbook it was just "Rem. Drive". I also noticed on the working netbook there was an additional option under the bootable order section that allowed me to choose which hard drive to boot from. This section showed two hard drives, one of them being my USB stick. So, rather than changing the device boot order, I selected the USB stick as the hard drive to boot from first and it worked like a champ - I was able to boot into the LiveCD on the USB stick. Seems to me the working netbook is seeing the LiveCD USB stick as a hard drive, where-as the non-working netbook is seeing it as a plain ol' USB stick. The BIOS is the exact same version on both netbooks... any idea why it works on one and not on the other?

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  • Grub Rescue Unknown Filesystem Error. Grub Corrupted or Filesystem?

    - by nightcrawler
    Now it has happened twice & have been pulling my hairs now... I have installed xubuntu on my external hardisk & have been using it for about 3 months. It has three partitions, one of 500 mb mounted at /boot, 2nd one of 48gb mounted at / & the rest (out of 160gb) is ntfs partition....used as normal external storage. The last storage supposedly acts as a buffer b/w Linux distributions & Win platform, buffer in the sense that it provides a universal channel for data transfers. I have constantly used this external hardisk for data transfers b/w win7 laptop & xubuntu (on this external hd) without any hassle. However, on of my desktops where I have ubuntu I (for the first time) attached this external drive which let me do data transfers where all three partitions properly mounted....but then nasty thing occurred the same that occurred before. I (as usual) tried booting via this external hd (one having xubuntu, one having being formerly used under Ubuntu) I got error Now I am totally devastated because similar thing happened ~6months before when I had fedora 17 in my external hd (instead of xubuntu) & after it was used under ubuntu the same happened...i didn't reported it because I already had planned towards debian instead of rpm! The mystery is that as long as I don't attach this external hd under ubuntu the data never** corrupts whereas under win xp/7 I can use it as a normal usb storage of coarse linux partitions aren’t available under win platforms... **From corrupts I mean hd fails to boot with the error mentioned however cant say whether data within remains untouched? It seems that my grub & or MBR is corrupted. Please sir guide me to solve this issue also why I cant attach & use linux external hds under linux platform Disk /dev/sdc: 160.0 GB, 160041884672 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581806 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0004e7d0 Device Boot Start End Blocks Id System /dev/sdc1 * 2048 976895 487424 83 Linux /dev/sdc2 978942 96874495 47947777 5 Extended /dev/sdc3 96874496 312575999 107850752 7 HPFS/NTFS/exFAT /dev/sdc5 978944 94726143 46873600 83 Linux /dev/sdc6 94728192 96874495 1073152 82 Linux swap / Solaris I can recall for sure that have seen a thread here when a similar problem occurred & in response someone gave solution of how to mount (now invisible) partitions & recover important data in them. I have misplaced that URL so if any can guide me thither because my important documents resides in / partition What I already have done: Without success I have tried this & related solutions What I plan to do: I believe that filesystem has corrupted & would you recommend solution like this provided I cant recall whether my /boot (500mb) partition was ext4 or ext2 though I am sure that my / (48gb) partition was ext4 UPDATE 1 Attached my external hd under Ubuntu ran followinf command as root grub-install /dev/sdc where /dev/sdc was my external hd containing corrupted xubuntu....it reported all done! I re-ran fdisk -l but to my disappointment it reported Disk /dev/sdc: 160.0 GB, 160041884672 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581806 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1b6b9167 Disk /dev/sdc doesn't contain a valid partition table ...& now I can't even access its ntfs partition (former /dev/sdc3) please help? UPDATE 2 TestDisk (by cgsecurity) failed at founding any partition table :( TestDisk 6.13, Data Recovery Utility, November 2011 Christophe GRENIER <[email protected]> http://www.cgsecurity.org Disk /dev/sdc - 160 GB / 149 GiB - CHS 19457 255 63 Partition Start End Size in sectors

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  • Failed to unmount partitions

    - by msknapp
    I'm trying to install ubuntu from a pen drive. I have windows 7 installed already and want to keep that installation. I have a 3TB drive that has one 2TB partition on it, so the last 1TB is completely unused, which is where I want to install ubuntu. I started ubuntu in "try ubuntu" mode and then opened gparted, and then deleted the unused partition for the last third of my drive, then tried to install ubuntu. During the install, it asked me if I wanted to unmount the drives I already have The installer has detected that the following disks have mounted partitions: /dev/sda, /dev/sdb Do you want the installer to try to unmount the partitions on these disks before continuing? If you leave them mounted, you will not be able to create, delete, or resize partitions on these disks, but you may be able to install to existing partitions there. No, Yes I said no because I don't want to lose my windows 7 installation, nor any of that data. I wonder, if I had said yes above, would I have lost all the data on those drives? Anyways, I hit no and continued. I chose to install ubuntu alongside windows 7, and hit continue. A few minutes passed when this popup appeared: Failed to unmount partitions The installer needs to commit changes to partition tables, but cannot do so because the partitions on the following mount points could not be unmounted: /media/ubuntu/Three\ Terabyte Drive Terabyte\ DriveDrive Please close any applications using these mount points. Would you like the installer to try to unmount these partitions again? Go Back, Continue Why is this not working? What am I supposed to do? ========== Update: I went ahead and said yes, it can unmount those partitions. It finished installing Ubuntu, but now when i start my machine it just takes me to the grub rescue prompt. Seems like it broke something. What can I do now? =============== Results of fdisk -l: Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00027e14 Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 976771071 488282112 7 HPFS/NTFS/exFAT WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 3000.6 GB, 3000592982016 bytes 255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 1 4294967295 2147483647+ ee GPT Partition 1 does not start on physical sector boundary. Disk /dev/sdc: 16.0 GB, 16008609792 bytes 255 heads, 63 sectors/track, 1946 cylinders, total 31266816 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdc1 * 32 31266815 15633392 c W95 FAT32 (LBA) Disk /dev/sdd: 999.5 GB, 999501594624 bytes 255 heads, 63 sectors/track, 121515 cylinders, total 1952151552 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0002ae3f Device Boot Start End Blocks Id System /dev/sdd1 2048 1952151551 976074752 7 HPFS/NTFS/exFAT

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  • My Windows 7 computer won't boot up and a BSOD keeps coming up; how do I solve it?

    - by opj
    Whenever I boot my Windows 7 computer, I get a blue screen of death with the following details: A problem has been detected and windows has been shut down to prevent damage to your computer. If this is the first time you've seen this stop error screen, restart you computer. If this screen appears again, follow these steps: Check for viruses on your computer. Remove any newly installed hard drives or hard drive controllers. Check your hard drive to make sure it is properly configured and terminated. Run CHKDSK /F to check for hard drive corruption, and then restart your computer. Technical Information: * STOP: 0x0000007B (0xFFFFF880009A98E8,0xFFFFFFFFC000000D,0x0000000000000000,0x0000000000000000) What does this mean, and how can I fix it so I can boot my machine once again?

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  • C# Compress Triple Byte Array

    - by Mark
    Hi. I currently got this script, which compresses byte arrays. But I need it rewritten, so it can compress triple byte arrays [,,] Thanks! public static byte[] Compress(byte[] buffer) { MemoryStream ms = new MemoryStream(); GZipStream zip = new GZipStream(ms, CompressionMode.Compress, true); zip.Write(buffer, 0, buffer.Length); zip.Close(); ms.Position = 0; MemoryStream outStream = new MemoryStream(); byte[] compressed = new byte[ms.Length]; ms.Read(compressed, 0, compressed.Length); byte[] gzBuffer = new byte[compressed.Length + 4]; Buffer.BlockCopy(compressed, 0, gzBuffer, 4, compressed.Length); Buffer.BlockCopy(BitConverter.GetBytes(buffer.Length), 0, gzBuffer, 0, 4); return gzBuffer; } public static byte[] Decompress(byte[] gzBuffer) { MemoryStream ms = new MemoryStream(); int msgLength = BitConverter.ToInt32(gzBuffer, 0); ms.Write(gzBuffer, 4, gzBuffer.Length - 4); byte[] buffer = new byte[msgLength]; ms.Position = 0; GZipStream zip = new GZipStream(ms, CompressionMode.Decompress); zip.Read(buffer, 0, buffer.Length); return buffer; }

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  • T42 Thinkpad, USB boot, CF for programs and storage?

    - by Tom K.
    Is this feasible? I have a Thinkpad T40. I'd like to get one of the tiny USB drives (like the Verbatim Store 'n' Stay series) of sufficient size to handle basic Linux OS booting (8GB?), then put 16Gb or greater memory card (SD or CF) in the PCMCIA slot with appropriate adapter for additional application programs and data storage. I know I could get a used or refurb HD, but I've had reliability issues in the past. I don't believe that new IDE drives are available.

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  • How To Start NX/VNC Session At Ubuntu Boot Time?

    - by darkAsPitch
    I want an NX or VNC session to start automatically when an Ubuntu server boots up - without a monitor connected - loading a certain user's desktop and keeping it loaded and ready until I log in via NX or VNC. How would one accomplish that? This code works via my terminal when I am logged in as the NX user, but not via root, and not in the init.d folder. No idea why? /usr/NX/bin/nxclient --session /home/user/.nx/config/SavedSession.nxs Please provide somewhat simplified instructions! I am certified linux newb.

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  • How to create an EFI System Partition?

    - by Alex Popov
    TL; DR How do I create an EFI system partition from scratch? How do I put the EFI firmware on it onces it is created? Long version I hava Toshiba T430 laptop. I received it with Windows 7 installed (but I think originally it has shipped with Windows 8). I installed Ubuntu on it, but deleted some partitions on the disk so that I ended up wiping out the Windows and only having Ubuntu. Among the deleted partitions was the EFI System partition. I discovered that Ubuntu now boots in Legacy mode (and not UEFI). I am trying to follow this guide on converting my Ubuntu installation from Legacy to UEFI. The problem - since there is no EFI partition whenever I choose from BIOS to boot using UEFI I cannot boot. That counts not only for the harddrive, but usb and DVD as well. I think this is logical - it expects an EFI partition and since it can't find it, it cannot continue booting futher, be it from HDD or DVD. So how do I recreate the EFI partition? The guide above says: Creating an EFI partition If you are manually partitioning your disk in the Ubuntu installer, you need to make sure you have an EFI partition set up. If your disk already contains an EFI partition (eg if your computer had Windows8 preinstalled), it can be used for Ubuntu too. Do not format it. It is strongly recommended to have only 1 EFI partition per disk. An EFI partition can be created via a recent version of GParted (the Gparted version included in the 12.04 disk is OK), and must have the following attributes: Mount point: /boot/efi (remark: no need to set this mount point when using the manual partitioning, the Ubuntu installer will detect it automatically) Size: minimum 100Mib. 200MiB recommended. Type: FAT32 Other: needs a "boot" flag. I had some trouble creating this partition: I boot from a live Ubuntu DVD, open GParted, create a 200MB partition and format it to FAT32. In GParted I cannot set the mount point and thus cannot set the bootflag. I didn't set the mount point in /etc/fstab since it's a live CD and fstab looked quite differently from what I expected compared to a normal boot. Anyway, I just didn't know what values to set. I booted again via the live DVD and then chose to install Ubuntu. I then created a partition with the mentioned criteria - mount point, 200MB, FAT32, boot flag. However, I continue to have this problem and I suppose it's because on that partition there is no EFI firmware, it's just an empty partition, which is suitable to have EFI firmware. So again, how do I create an EFI partition, which has the EFI software, so that the laptop can once again boot in UEFI mode?

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  • System says memory controller not available and doesn't boot?

    - by Martin
    Hello everybody, Recently I have had a MainBoard-problem. I've send my mainboard to service and today I got it back from the company. It is a Foxconn 520a mainboard. Now I have installed my exchanged mainboard. But now I have a problem. My system boots until the device list with IRQ entries appear. The system says "Verifying DMI-pool-data..." and nothing happens. The IRQ-device list shows that the memory-controller is not available. All other devices have got an IRQ. Bus No. Device No. Func No. Vendor/Device Class Device Class IRQ 0 0 0 10DE 0547 0500 Memory Controller NA Do you have any ideas where the problem could be? I already have disconnected all unnecessary devices like the hard disks. Perhaps it is a BIOS problem, but I don't know where I should look. Would be nice if there is any advice, Greetings, Martin

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  • Installing Chameleon RC4

    - by user36912
    I have installed windows xp on C: and Hackintosh on F:. Currently windows xp is booting by default. If i need to boot into Hackintosh i need Empire EFI boot CD. I want to install Chameleon boot loader so that no more need of EFI boot CD. How can i install Chameleon? Will i install it from Mac or from win xp? What steps?

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  • How can I create a pen drive that I can boot from, and then install Win98 from?

    - by rossmcm
    I have a HP Compaq t5515 thin client computer with a flash disk and USB port. I want to put Win98 onto it, replacing whatever is on there now (I think it is some Linux-based thing). I can find stuff about putting Win98 onto a pen drive and running from that, but I can't find any info about installing Windows 98 from a pen drive onto a sep[arate system. Is it just a matter of making the pen drive bootable to DOS copying the contents of a Win98 installation CD onto the pen drive booting the HP machine from the pen drive running SETUP.EXE from the pen drive? Any pointers appreciated. TIA

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  • When modern computers boot, what initial setup of RAM do they execute, and how does it exactly work?

    - by user272840
    I know the title reeks of confusion, and some of you might assume I am just wondering about how the computer boots in general, but I'm not. But I'll sort this out for you people now: 1.Onboard firmware is how mostly all modern computer devices work, whether or not with EFI/UEFI(even without "onboard firmware", older computers still employed bank switching, or similar methods with snap-in firmware, cartridges, etc.) 2.On startup there is no "programs" running in the traditional sense yet, i.e. no kernel, OS, user-applications; all of the instructions, especially the very first instruction, is specified by the Instruction Pointer, I am guessing. How is the IP/PC/etc. set to first point to an address for a BIOS/firmware/etc. instruction, and how do the BIOS instructions map themself out in memory prior to startup? 3.Aside from MMIO, BIOS uses certain RAM addresses to have instructions. The big ? comes in when I ask this ... how does BIOS do this? Conclusion: I am assuming that with the very first instruction there is an initial hardware setup for BIOS prior to complete OS bootup. What I want to know is if it's hardware engineered to always work this way, if there's another step in this bootup method I am missing, a gap of information I am unaware of, or how this all works from the very first instruction, and the RAM data itself.

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