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Thread: Ubuntu partitioning info

  1. #1
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    Ubuntu partitioning info

    Hi

    I am trying to install Dapper on to some free space on my primary hard disk (sda) but coming acropper saying only allowed 4 primary partitions but am unable to create a logical partition unless using the extended partition created under Windows for a second logical drive (NTFS)

    The disk layout is as follows:

    /dev/sda1 - NTFS (Windows XP here)
    /dev/sda2 - Extended
    /dev/sda3 - NTFS (Data here for XP)

    If I try and add partitions using the Ubuntu drive partitioner I am only allowed to create primary partitions which doesn't allow me to create a '/home' directory just '/' and 'swap'. I am allowed to add logical partition under the Extended option but this is NTFS and will lose data on it.

    Any ideas?

    Thanks
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    Agent of the System ikonia's Avatar
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    can you even see the extended partition within the ubuntu installer ? is there any space left in the extended partition ?

    Ubuntu will allow you to create logical partitions if you create it under an extended.
    It is Inevitable.....


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    No space left in the extended partition just 16GB of unformatted space after this I'm afraid.
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    Comfortably Numb directhex's Avatar
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    the MSDOS partition scheme is pretty strict - maximum of 4 partitons, of which at most 1 can be an extended partition. you can hide extra (logical) partitions inside the extended partiton to increase the total.

    the only way I can see to do what you want (i.e. gain 2 more partitions) is a) move the existing sda3 to the end of the drive b) increase sda2 to fill the empty space c) create logical partitions in the new extended partition space (these would be numbered sda6 and sda7). a gparted livecd should be able to do all the above non-destructively

    the only thing that bugs me is i'm pretty sure the extended partition has to come after the primary partitions. but i'm not sure.

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    I installed Ubuntu (or so i thought) by adding a logical partition to the extended partition for my ext3 /home directory. I then created two primary partitions (/swap and / ). Installed Ubuntu but only boots into windows and doesn't show option to boot Linux (grub). I wonder if what you say directhex about extended parts being at the end is causing this?

    Thanks.

    UPDATE:
    Ubuntu is not picking up grub. I have a SATAII hard disk with XP and Ubuntu installed and two more SATAI and two more IDE disks. I opened a terminal and grub menu.lst is on hd2,3 and the hard disks in the system according to grub menu is hd0 1 2 3 4. Don't know for sure how my SATA disk correlates to these hd numbers as during install the disk was sda and root partition was 4 , so sda4.

    When i carried out 'root (hd2,3)' command the response is = Filesystem type is ext2fs, partition type 0x83 ? I did format as ext3 so unsure of ext2fs?
    Last edited by geezerone; 25-09-2006 at 12:02 PM.
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    Just thought I would post an update.

    I had a brainstorm and decided to remove all disks apart from my SATAII drive and installed over the existing partitions (dev/sda 3 [swap],4 [/ ] and logical 6 [/home]. After rebooting Grub 1.5 loads and so do the options to choose between XP and Ubuntu. I booted into both OS's successfully and amended the 'menu.lst' file in grub to set default as XP and changed timeout to 3 secs.

    I suspect that grub was writing to my master IDE drive mbr record but this way there was no way it could write to any disk as only one there!

    So thanks for the help guys.
    Last edited by geezerone; 29-09-2006 at 11:53 PM.
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    The late but legendary peterb - Onward and Upward peterb's Avatar
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    Quote Originally Posted by geezerone View Post

    When i carried out 'root (hd2,3)' command the response is = Filesystem type is ext2fs, partition type 0x83 ? I did format as ext3 so unsure of ext2fs?
    ext3 is the same as ext2 with the addition of journalling (I guess you used mkfs with the -j option.) You can check/change the files system with tune2fs.
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