Page 2 of 2 FirstFirst 12
Results 11 to 15 of 15

Thread: "This computer currently has no detected operating systems"

  1. #11
    Join Date
    Jan 2012
    Beans
    8

    Re: "This computer currently has no detected operating systems"

    Chkdsk /r/f didn't find any errors in the drive (except for flagging the "volume bitmap" error message which Microsoft say it's safe to ignore), and chkntfs says that the drive is not dirty.

    So I don't know what to try next. It's true that the hard disk is quite old (six years), and maybe it's just starting to wear out?

  2. #12
    Join Date
    Jan 2012
    Beans
    8

    Re: "This computer currently has no detected operating systems"

    Also, Ubuntu's "Something Else" install screen still takes me to the same partition table as before: /dev/sda - and all the rest is blank.

  3. #13
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: "This computer currently has no detected operating systems"

    I thought fdisk gave an overlapping error so we knew to check math.

    /dev/sda1 * 63 157710104 78855021 7 HPFS/NTFS/exFAT
    /dev/sda2 157704190 312576704 77436257+ 5 Extended

    (also sda5 which is in sda2 has same start)

    It looks like sda1 ends after the start of sda2. The issue then is should sda1 be shorter or sda2 start later. And if you have data from both in the overlap you will have problems. Back up everything that is important.

    Backup partition table to text file & save to external device.
    sudo sfdisk -d /dev/sda > PTsda.txt

    You can edit the PTsda.txt file as it is just text and read the corrected data back in. You may be able to use Testdisk to show old partition layout and recover that but again any overlap change may cause data loss.

    Fix overlaping partition error srs5694 post #34
    http://ubuntuforums.org/showthread.php?t=1667614

    Use sfdisk to edit partitions and links to how to convert primary/logical
    http://ubuntuforums.org/showthread.php?t=1192598
    sfdisk to fix extended beyond end -partition outside the disk!
    http://ubuntuforums.org/showthread.php?t=1012825

    repairs including testdisk info & link to testdisk, testdisk is in repository and on most repairCDs
    http://members.iinet.net.au/~herman546/p21.html
    Instructions
    http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step
    http://www.cgsecurity.org/wiki/Menu_Analyse
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  4. #14
    Join Date
    Jun 2011
    Location
    Somewhere
    Beans
    34

    Re: "This computer currently has no detected operating systems"

    Hm. Okay This does sound rather odd but I would give oldfred's suggestion a try as I am at a loss of what to try next but wish all the luck in fixing your problem.

    Thanks,
    SM
    shymega

  5. #15
    Join Date
    Jan 2012
    Beans
    8

    Re: "This computer currently has no detected operating systems"

    Quote Originally Posted by oldfred View Post
    I thought fdisk gave an overlapping error so we knew to check math.

    /dev/sda1 * 63 157710104 78855021 7 HPFS/NTFS/exFAT
    /dev/sda2 157704190 312576704 77436257+ 5 Extended]

    Thanks for checking this, oldfred. Yes, it does look as though there may be something wrong with the partition table. There is really very little material on that computer that's of much importance, so it doesn't matter if things get messed up a bit, though I want to preserve the dual boot system if I can. I'll try to do the editing you recommend, but it may take some time to find a solution - if I do find one, I will mark this thread as SOLVED.

Page 2 of 2 FirstFirst 12

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •