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Thread: Not detecting partitions

  1. #1
    Join Date
    Nov 2008
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    34

    Not detecting partitions

    Hello,

    I bought the new harddisk so was doing a fresh install of ubuntu (Already installed win7)

    But ubuntu setup is not detecting the partitions correctly it is showing 4 partitions but I have 5 (and +1 which is created by win7 of 100mb for system usage)

    Setup is showing total 4 partitions and clubing all the partitions together and showing as 785gb and one partition is not detected at all and the other 3 partitions only one is correct 100mb win7 system usage partition.


    I have 4 partitions ntfs and 1 partitions exFat, I had created exFat hoping ubuntu setup will detect it as different partition but that is not shown in partitions selection menu.

  2. #2
    Join Date
    Apr 2009
    Location
    Rawalpindi, Pakistan
    Beans
    5,666
    Distro
    Ubuntu Gnome Development Release

    Re: Not detecting partitions

    Hi.

    From terminal under Applications > Accessories, please post the output of

    Code:
    sudo fdisk -l

  3. #3
    Join Date
    Nov 2008
    Beans
    34

    Re: Not detecting partitions

    This is screenshot of win7 http://i52.tinypic.com/v83nyp.png

    ubuntu@ubuntu:~$ sudo fdisk -l

    Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
    255 heads, 63 sectors/track, 121601 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: 0xa8177cf6

    Device Boot Start End Blocks Id System
    /dev/sda1 1 1 1014+ 42 SFS
    Partition 1 does not end on cylinder boundary.
    /dev/sda2 * 1 13 102400 42 SFS
    Partition 2 does not end on cylinder boundary.
    /dev/sda3 13 26122 209715200 42 SFS
    Partition 3 does not end on cylinder boundary.
    /dev/sda4 26122 121602 766942936 42 SFS
    Partition 4 does not end on cylinder boundary.

    Disk /dev/sdb: 4043 MB, 4043284480 bytes
    125 heads, 62 sectors/track, 1018 cylinders
    Units = cylinders of 7750 * 512 = 3968000 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x0000ac20

    Device Boot Start End Blocks Id System
    /dev/sdb1 * 1 1018 3944719 c W95 FAT32 (LBA)

  4. #4
    Join Date
    Apr 2009
    Location
    Rawalpindi, Pakistan
    Beans
    5,666
    Distro
    Ubuntu Gnome Development Release

    Re: Not detecting partitions

    Well you have dynamic discs in Windows. I guess you'll need to convert them to basic partitions to recognize them in Ubuntu. I don't think Ubuntu will be able to recognize them properly otherwise...

    Wait for some other suggestions.

  5. #5
    Join Date
    Nov 2008
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    34

    Re: Not detecting partitions

    Anybody else can help?

  6. #6
    Join Date
    Mar 2010
    Location
    Woonsocket, RI USA
    Beans
    3,195

    Re: Not detecting partitions

    I concur with sikander3786. I'll add that the Partition Wizard software is supposed to be able to convert from Windows dynamic disks to standard partitions without data loss; however, I've never used this software and so I can't verify this claim. As a general rule, you should always back up your important data before making low-level partitioning changes, so please do so before you attempt such a change.

  7. #7
    Join Date
    Aug 2009
    Beans
    56

    Re: Not detecting partitions

    Read the man pages on FDISK and the following: http://tinyurl.com/2cw327j. See if this helps clear things up.

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