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  • How do I restore GRUB 2?

    - by uahug
    I upgraded my laptop with an SSD, moving my old HDD to where the DVD-drive was, so that I could have speed and storage. Now, I have reinstalled Ubuntu on the SSD, deleting all the partitions on the old HDD to make space for a data partition. But now the laptop doesn't even get to GRUB 2 if the HDD is plugged in! If I take it out, everything works, but as soon as I plug it in and retry to boot, I won't find GRUB. At first, I thought it was because of the boot order, but the order was OK: first the notebook hard drive (SSD) and then the CD/DVD drive (which in reality is the HDD). How can I fix it? Doing a simple grub-install /dev/sda doesn't work.. The SSD is sda, and the HDD is sdb.

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  • How to partition a fully used hard drive

    - by MineCraftMan39
    I installed Ubuntu on my laptop which when I got it I had Fedora 13 installed on it as the OS. Now I want to install Fedora 18 in a dual boot with Ubuntu. Problem is when I installed Ubuntu, I didn't partition for dual boot and I gave the entire hard drive to Ubuntu and no longer have the space to dual boot. How can I lower the partition on Ubuntu to make space on the hard drive for Fedora? I want to split the hard drive 50/50 between the two. Thanks in advance.

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  • can't chmod on external hard disk?

    - by G. He
    I have an USB3.0 external hard disk, partitioned to 3 NTFS partitions. When I plug the hard disk in, the 3 partitions automatically mounted under /media. So far so good. I can read and write to files, or mkdir, etc on these partitions. But I can't do chmod/chown on any of the files/directories on these partitions. The owner:group always myself, and the mode are always 700 for directories and 600 for files. I have another partition on internal harddisk also mounted. That partition works fine. I looked the output of mount command, the only difference between mount options is that there is one extra 'default_permissions' on the external hard disks. Anyway I can set the owner:group and mode on these files and directories.

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  • Mounting a Mail Store that is in a Recovery Storage group On Exchange 2003

    - by Kyle Brandt
    If I have a production server with the Mail Store Foo in both the storage group companyName and the Recovery Storage Group, is it okay to Mount Foo in the RSG while it is mounted in companyName so I can extract some mailboxs from the recovery storage group? Basically I am wonder if it is okay to mount it in both Production and the Recovery Storage Groups while the mail server is in production and the particular mail store is in production. Reference: "Once an RSG is restored into and mounted up you can connect to it with ExMerge and read out mailboxes into PST files for merging back into a 'live' store" -- http://serverfault.com/questions/49728/test-restore-of-exchange-dbs-with-the-ms-exchange-plugin-of-netbackup-6

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  • Red Hat 5.3 on HP Proliant DL380 G5 and failed drive on RAID controller

    - by thinkdreams
    I have a development ERP server here in my office that I assist with support on, and originally the DBA requested a single drive setup for some of the drives on the server. Thus the hardware RAID controller (an HP embedded controller) looks like: c0d0 (2 drive) RAID-1 c0d1 (2 drive) RAID-1 c0d2 (1 drive) No RAID <-- Failed c0d3 (1 drive) No RAID c0d4 (1 drive) No RAID c0d5 (1 drive) No RAID c0d2 has failed. I replaced the drive immediately with a spare using the hot-swap, but the c0d2 continues to mark itself as failed, even when I umount the partition. I'm loathe to reboot the server since I'm concerned about the server coming back up in rescue mode but I'm afraid that's the only way to get the system to re-read the drive. I assumed there was some sort of auto-detection routine for this, but I haven't been able to figure out the proper procedure. I have installed the HP ACU CLI utilties, so I can see the hardware RAID setup. I'd really like to find out what the proper procedure should have been, where I went wrong, and how to correct it now. Obviously this goes without saying I should NOT have listened to the DBA and set the drives up as RAID-1 throughout as was my first instinct. He wasn't worried about data loss, but it sure would have been easier to replace the failed drive. :)

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  • How to correctly partition usb flash drive and which filesystem to choose considering wear leveling?

    - by random1
    Two problems. First one: how to partition the flash drive? I shouldn't need to do this, but I'm no longer sure if my partition is properly aligned since I was forced to delete and create a new partition table after gparted complained when I tried to format the drive from FAT to ext4. The naive answer would be to say "just use default and everything is going to be alright". However if you read the following links you'll know things are not that simple: https://lwn.net/Articles/428584/ and http://linux-howto-guide.blogspot.com/2009/10/increase-usb-flash-drive-write-speed.html Then there is also the issue of cylinders, heads and sectors. Currently I get this: $sfdisk -l -uM /dev/sdd Disk /dev/sdd: 30147 cylinders, 64 heads, 32 sectors/track Warning: The partition table looks like it was made for C/H/S=*/255/63 (instead of 30147/64/32). For this listing I'll assume that geometry. Units = mebibytes of 1048576 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End MiB #blocks Id System /dev/sdd1 1 30146 30146 30869504 83 Linux $fdisk -l /dev/sdd Disk /dev/sdd: 31.6 GB, 31611420672 bytes 255 heads, 63 sectors/track, 3843 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00010c28 So from my current understanding I should align partitions at 4 MiB (currently it's at 1 MiB). But I still don't know how to set the heads and sectors properly for my device. Second problem: file system. From the benchmarks I saw ext4 provides the best performance, however there is the issue of wear leveling. How can I know that my Transcend JetFlash 700's microcontroller provides for wear leveling? Or will I just be killing my drive faster? I've seen a lot of posts on the web saying don't worry the newer drives already take care of that. But I've never seen a single piece of backed evidence of that and at some point people start mixing SSD with USB flash drives technology. The safe option would be to go for ext2, however a serious of tests that I performed showed horrible performance!!! These values are from a real scenario and not some synthetic test: 42 files: 3,429,415,284 bytes copied to flash drive original fat32: 15.1 MiB/s ext4 after new partition table: 10.2 MiB/s ext2 after new partition table: 1.9 MiB/s Please read the links that I posted above before answering. I would also be interested in answers backed up with some references because a lot is said and re-said but then it lacks facts. Thank you for the help.

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  • Bitlocker-to-go on fixed drive

    - by Unsigned
    Scenario Two drives are connected to a computer. One via a SATA-to-USB interface, the other directly via a SATA-to-eSATA cable. The drive on USB appears as a removable drive, the drive on eSATA appears as a fixed drive. Both use NTFS. The USB drive offers Bitlocker-To-Go, the eSATA drive only offers BitLocker. Question It is my understanding that drives encrypted with BitLocker-To-Go include an app to allow Windows XP read-only access to the volume. Is this the only difference, and is there a way to use Bitlocker-To-Go on the eSATA drive? Update Another difference is found here: The recovery key is required when a BitLocker-protected fixed data drive configured for automatic unlocking is moved to another computer.[1] Assuming that does not apply to removable drives.

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  • HP Recovery Manager failed creating a backup disc

    - by Baehr
    I had to restore my computer (running Windows 7) back to its factory default, so I ran the HP recovery manager disc and chose to reformat my computer. Before doing this I was given an option to backup my current files to a DVD, and I did so; getting the confirmation of a successful DVD burn. Booting up my computer everything looks like it did when I first purchased it (like expected). But when I pop in the backup DVD and run the recovery EXE inside it, the application creates a directory inside C:\System Recovery Files which contains the empty directories: [(^_^)] and Program Data. So essentially what I'm getting out of this is a failure in creating a back-up. Which is not only confusing but incredibly frusterating. Is there any way that I can recover the files lost in the

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  • External hard drive that gets its power supply from the PC.

    - by AngryHacker
    I need an external drive to connect to my MacMini. I've been using an 80gb 2.5 drive in an enclosure and it's fine, but now I need a 1.5TB drive. Unfortunately all the 1.5TB drives I found need a separate power supply. I'd like it to be able to feed its power off the USB drive (just like my 80gb drive does). Does something like that exists?

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  • Recovery files from a damage VM?

    - by ejlml
    After search and search again, my VM still can't recovery. Does somebody know how to retrieve the files from the VM? My VM is XP, it can't boot up anymore after my forced quit. In the Mac OS 10.6.2, I try to "get info" the VM file, I can see it is still using 25G space. I try to mount it with VMDK mounter (just right click the VM file and chose open with), it can mount but nothing inside. I also try to use filesalvage to recovery the files after mounted the VM, it can recovery many many files, but the files name and some document become to be symbol. What can I do now? Pls help me, thanks!

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  • Hard drives indication with controller MegaRAID SAS 9261-8i on HP Proliant DL320e Gen8. Is it possible?

    - by ame
    Give me advice, please. My situation: There're the server HP ProLiant DL320e Gen8 and MegaRAID SAS 9261-8i RAID Controller. I installed Controller into server and I reconnected Mini-SAS cord from block of hard drives to controller, but I haven't any indication of hard discs on server front panel. There's indication of activity of drives only during boot of server. Controller has 2-pin connector (JT6B3, SAS Activity LED header) but where and how can I connect it? Thanx.

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  • Run Wave Trusted Drive Manager from a bootable CD, recover crashed enrypted SSD?

    - by TigerInCanada
    Is there a way to run Wave Trusted Drive Manager from a live-cd to access a non-bootable SSD with Full Disk Encyption hard disk? http://www.wave.com/products/tdm.asp The crashed disk is a Samsung SSD PB22-JS3, 128Gb. Is has bad blocks at 128-block intervals. If the SSD password could be unset, is sending the unit for disaster recovery possible? What might cause a nearly new SSD to crash in this way, and what is the probability of it happening again? We have other units in service an I can do without every laptop disk in the company crashing...

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  • How to Disable secondary drive from booting upon restart - Windows

    - by DevCompany
    I had a Windows 2003 Hard Drive on my server and it went bad so I installed a new clean hard drive and installed Windows 2008 R2 on the new clean drive. I moved the old 2003 drive to be used only for general storage on the same computer. It usually boots into Windows 2008 upon a restart, but just sometimes it starts trying to boot the old 2003 drive and causes boot issues(NTDLR Bootloader, and other errors), even though the order of boot preference is set to boot 2008, and NOT 2003. I need to know how to remove any old code that keeps this old drive as a bootable drive. I still want to use it as a secondary drive just dont want to have any boot code on it. hopefully my situation is clear for everyone to get a good response. Thank you...

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  • Importing VMware drive into VirtualBox drive

    - by Bry4n
    I have VMware on my Mac and it crashed. I am unable to access the files used by the VMware. So I downloaded VirtualBox and when I try to add the .vmwarevm file to VirtualBox it says that its unable to read that type. I wasn't sure if there was a way i can get to these files as they are extremely important. I can not shutdown or open my virtual state in VMware whatsoever. Thoughts?

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  • Spotlight Infinite Indexing issue (external data drive)

    - by Manca Weeks
    This is an external drive, formerly a boot drive which is now in use only to access music files (sibelius, audio, midi, live, logic etc.) without transferring the data into a new boot system, partly because of the issue I am about to describe, but mostly because the majority of the data is mainly there for archival purposes. The user is a composer and prominent musician and needs to be able to rehash the data at will. I have tried several things - here is a list: - make complete filesystem clone with antonio diaz's ddrescue - run Disk Warrior on copy, repair whatever errors occurred - wipe out all ACLs on entire drive - set all permissions to the same value - wide open 777 - remove any system data (applications, system files, including hidden files to the best of my knowledge) by selecting only non-system/app data and using Carbon Copy Cloner to put only the data of interest onto a newly formatted drive - transfer data to newly formatted drive folder by folder, resetting the spotlight index in between adding each to observe for issues (interesting here is that no issues occurred except for in Documents folder - when I transferred only the Documents folder to a newly formatted drive on its own - no trouble. It appears almost as thought it may not be the content but the quantity or specific combination of data that results in problems) - use DataRescue to transfer the data to yet another newly formatted drive to expose any missed hidden files Between each of the above steps I stopped Spotlight (search for anything beginning with md in Activity Monitor - All Processes and quitting it), deleted the .Spotlight-V100 directory from the affected drive. Restart Splotlight indexing by adding drive to Spotlight privacy list and removing it. In each case the same issue occurs - Spotlight begins indexing normally (or so it seems), then the index estimated time increases, usually to 4 hours remaining. This is where it gets stuck and continues to predict 4 hours remaining but never finishes. Sometimes I can't eject the drive and have to quit the md.. processes from Activity Monitor to be able to eject the drive without Force Eject. Once I disconnect the drive after the 4 hours remaining situation - if I reattach it, Spotlight forever estimates remaining time and never gets going again. So there it is. It is apparently not a filesystem issue, not a permissions issue and not tied to any particular piece of hardware or protocol (used USB and FW drives). I have tried this on several machines (3 to be precise) and in 10.5.8 and 10.6.5. Simply disabling Spotlight on this volume is not an option because the owner has no clue where things are as the data on the volume dates back to music projects and compositions from 2003 and before. He needs to be able to query for results. Anyone got any ideas? Thanks, M

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  • Recovering data from failed Raid configuration with 4 drives and two raid sets (Asus P6T / Intel ICH10r)

    - by user56365
    I've added the complete detailed version for my question below for those who can help, but want to quickly summarize my question first. I setup two Raid arrays using (4) WD Raptors, a striped set for the OS and 1+0 set for crucial data. After booting once out of the 50 times a cable fell out, the drive wasn't recognized in the array anymore. After trying to fix it, another drive did the same. I now have two drives remaining, luckily with the parity information. I know the striped set is gone, but I need the data on the other set. Can anyone recommend anything to recover the data, or fix the two drives that doesn't allow the raid controller to recognize the drives, even though they are listed on the utility screen as still apart of the configuration but that they are not found? More Details I recently upgraded to a ASUS P6T motherboard with an Intel ICH10R raid controller and changed my previous 4 drive raid array from strictly a Raid 1+0 set to a Raid 0 for the OS/Page/Scratch drive and a Raid 1+0 set for crucial data. I never had problems after upgrading with my configuration, even when a drive died and was replaced. I managed to rebuild the array fine. Unfortunately this time around, a cable came unattached and I booted my system up until the raid status screen with the degraded error. This shouldn't have been a problem, but after I attached the drive it was no longer recognized as a member in the array. Both drives actually show up as a non-member disk. I've spent a very, very long time online trying to find information or support and haven't had much luck. After spending time trying to scan the drive for errors, damaged partition info, etc.. another drive in the set decided it didn't want to be recognized as a part of the array. At this point, I have two out of the four drives still functioning, but the Raid 1+0 array went from degraded to failed and I must find a way to retrieve that data. I think the two drives still in the array have the parity information because they show up as OS (110GB),BACKUP(80GB) and OS:1(110GB),BACKUP(80GB) under windows data management. The other two are simply 74gb Raw unallocated Is it possible recover the data using those two drive only, and which tool would I use? Could it be a simple partition table or any other error that is repairable with hard drive utilities out there? I know the Raid 0 set is done for, but I would assume because the correct drives failed in a 1+0 config to save the data I can retrieve it some how.

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  • Boot from Second SATA Drive

    - by Chris
    I have a Dell Precision 490 Workstation, and I just had my other question answered, Install Ubuntu to drive B without impacting drive A, and now I'm having a boot sequence issue. The external drive is great, boots up fine on my laptop, but how do I tell my desktop to boot from my second SATA drive and not the first SATAdrive. My drive configuration as follows SATA-0: Windows SATA-1: DVDR SATA-2: Ubuntu When I choose the boot menu, the option I have is "Internal Hard Drive". I assume it searches all drives, and loads the first bootable one it finds (which happens to be Windows), but I'd like to be able to select the drive from a list. Has anyone experienced this? Is possible without disabling the first hard drive in the BIOS?

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  • Fixed or consistent mount location for a USB hard drive

    - by Journeyman Geek
    I store my music on an external hard drive, and play them with foobar2k. However, the drive letter changes, which usually means I need to rebuild a fairly large playlist every so often. I'm wondering if there's a way to reserve a drive letter for a specific external device (or type of device) by device ID or volume name, or if I'm better off using a NTFS mount point, and re-mounting the drive to a folder each time. I'm using either a Windows XP or 7 system, and the external drive is NTFS.

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  • What free space thresholds/limits are advisable for 640 GB and 2 TB hard disk drives with ZEVO ZFS on OS X?

    - by Graham Perrin
    Assuming that free space advice for ZEVO will not differ from advice for other modern implementations of ZFS … Question Please, what percentages or amounts of free space are advisable for hard disk drives of the following sizes? 640 GB 2 TB Thoughts A standard answer for modern implementations of ZFS might be "no more than 96 percent full". However if apply that to (say) a single-disk 640 GB dataset where some of the files most commonly used (by VirtualBox) are larger than 15 GB each, then I guess that blocks for those files will become sub optimally spread across the platters with around 26 GB free. I read that in most cases, fragmentation and defragmentation should not be a concern with ZFS. Sill, I like the mental picture of most fragments of a large .vdi in reasonably close proximity to each other. (Do features of ZFS make that wish for proximity too old-fashioned?) Side note: there might arise the question of how to optimise performance after a threshold is 'broken'. If it arises, I'll keep it separate. Background On a 640 GB StoreJet Transcend (product ID 0x2329) in the past I probably went beyond an advisable threshold. Currently the largest file is around 17 GB –  – and I doubt that any .vdi or other file on this disk will grow beyond 40 GB. (Ignore the purple masses, those are bundles of 8 MB band files.) Without HFS Plus: the thresholds of twenty, ten and five percent that I associate with Mobile Time Machine file system need not apply. I currently use ZEVO Community Edition 1.1.1 with Mountain Lion, OS X 10.8.2, but I'd like answers to be not too version-specific. References, chronological order ZFS Block Allocation (Jeff Bonwick's Blog) (2006-11-04) Space Maps (Jeff Bonwick's Blog) (2007-09-13) Doubling Exchange Performance (Bizarre ! Vous avez dit Bizarre ?) (2010-03-11) … So to solve this problem, what went in 2010/Q1 software release is multifold. The most important thing is: we increased the threshold at which we switched from 'first fit' (go fast) to 'best fit' (pack tight) from 70% full to 96% full. With TB drives, each slab is at least 5GB and 4% is still 200MB plenty of space and no need to do anything radical before that. This gave us the biggest bang. Second, instead of trying to reuse the same primary slabs until it failed an allocation we decided to stop giving the primary slab this preferential threatment as soon as the biggest allocation that could be satisfied by a slab was down to 128K (metaslab_df_alloc_threshold). At that point we were ready to switch to another slab that had more free space. We also decided to reduce the SMO bonus. Before, a slab that was 50% empty was preferred over slabs that had never been used. In order to foster more write aggregation, we reduced the threshold to 33% empty. This means that a random write workload now spread to more slabs where each one will have larger amount of free space leading to more write aggregation. Finally we also saw that slab loading was contributing to lower performance and implemented a slab prefetch mechanism to reduce down time associated with that operation. The conjunction of all these changes lead to 50% improved OLTP and 70% reduced variability from run to run … OLTP Improvements in Sun Storage 7000 2010.Q1 (Performance Profiles) (2010-03-11) Alasdair on Everything » ZFS runs really slowly when free disk usage goes above 80% (2010-07-18) where commentary includes: … OpenSolaris has changed this in onnv revision 11146 … [CFT] Improved ZFS metaslab code (faster write speed) (2010-08-22)

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  • How to install an OS on a external hard drive

    - by Nrew
    I made a little research before coming here. And found out that I need to disconnect all internal hard drive before proceeding. http://www.pendrivelinux.com/installing-ubuntu-to-a-usb-hard-drive/ Here's my question: If I install Windows XP or Ubuntu on an external hard drive. Would it be universal? Can I use it or run it on any computer. Assuming that the bios allows you to boot from USB hard drive. Or even not because there's PLoP Bootmanager And has the considerable amount of memory and processor power to run the OS. What other things to consider when installing an OS in an external hard drive? Is installing in the external hard drive the same as when installing in an internal hard drive? Can I also boot multiple OS? What are the things to consider when doing this? And if you have a tutorial there. Showing how to install an OS in an external hard drive. Please link.

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