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

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  1. #1
    Join Date
    Jan 2012
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    "This computer currently has no detected operating systems"

    I'm trying to install Ubuntu 11.10 on a dual boot system that currently contains an installation of Windows XP and another of Ubuntu 12.04 - I want to replace this with 11.10. while retaining the install of Windows XP. However, the 11.10 LiveCD installer says that "This computer currently has no detected operating systems", and gives me only 2 options:

    1) Erase disk and install Ubuntu
    2) Something else (manual partitioning)

    The output of fdisk -l is:

    Disk /dev/sda: 160.0 GB, 160041885696 bytes
    255 heads, 63 sectors/track, 19457 cylinders, total 312581808 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: 0x00073acd

    Device Boot Start End Blocks Id System
    /dev/sda1 * 63 157710104 78855021 7 HPFS/NTFS/exFAT
    /dev/sda2 157704190 312576704 77436257+ 5 Extended
    /dev/sda3 311011328 312580095 784384 82 Linux swap / Solaris
    /dev/sda5 157704192 311011327 76653568 83 Linux

    Disk /dev/sdb: 8019 MB, 8019509248 bytes
    20 heads, 16 sectors/track, 48947 cylinders, total 15663104 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: 0xc3072e18

    Device Boot Start End Blocks Id System
    /dev/sdb1 * 80 15663103 7831512 c W95 FAT32 (LBA)


    I'm wondering why the Ubuntu LiveCD installer apparently doesn't see the Win XP partition on sda1?

  2. #2
    Join Date
    Jun 2011
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    Re: "This computer currently has no detected operating systems"

    Hi, I've noticed that you have a device mounted at /dev/sdb.

    Providing you are installing from CD, could you attempt to unplug the device and try again?

    Thanks,
    sm.
    shymega

  3. #3
    Join Date
    Jan 2012
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    8

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

    With the device unplugged (it's an 8Gb USB Lexar flash drive), the result is the same: I get the same two options, and the message that "this computer currently has no detected operating systems".

  4. #4
    Join Date
    Jun 2011
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    Re: "This computer currently has no detected operating systems"

    Can you try Manual Partitioning and see if they WinXP is visible there please?
    shymega

  5. #5
    Join Date
    Jan 2012
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    Re: "This computer currently has no detected operating systems"

    In the manual partitioning screen there's an entry for /dev/sda - i.e. the 160Gb disk. It's the only entry there.

  6. #6
    Join Date
    Jan 2012
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    8

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

    There are one or two other threads about this topic, but they date from several years ago. e.g.

    http://ubuntuforums.org/showthread.php?t=1132131

    and don't seem very conclusive, as far as I can see,

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