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Thread: Partition Cleanup

  1. #1
    Join Date
    Oct 2005
    Beans
    81
    Distro
    Ubuntu 14.04 Trusty Tahr

    Partition Cleanup

    Soooo: I got a new laptop. I know I'm going to need to use the proprietary OS that came with it so I thought I'd dual boot. I'll skip the shaggy dog story and cut to the chase which is that I'm pretty happy with my machine over all but I've got partitions all over the place and what I'd like to do is clean them up *without* reinstalling. One problem is that a partition which bears the boot flag is actually smack in the middle of some unallocated space.

    I'm not convinced that this partition is really my boot partition but I don't fully understand ... um ... booting. I'd like to understand it better so I can make wise decisions about how to use my space better. Suggestions?

    I'm reading this: https://help.ubuntu.com/community/Grub2 now.

    Thanks!

    Code:
    [0 amanda@luna]$ sudo fdisk -l
    [sudo] password for amanda: 
    
    Disk /dev/sda: 120.0 GB, 120034123776 bytes
    255 heads, 63 sectors/track, 14593 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0xaf27f150
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *           1         192     1536000    7  HPFS/NTFS
    Partition 1 does not end on cylinder boundary.
    /dev/sda2             193        2639    19648440    7  HPFS/NTFS
    Partition 2 does not end on cylinder boundary.
    /dev/sda3           13755       14593     6735576    7  HPFS/NTFS
    Partition 3 does not end on cylinder boundary.
    /dev/sda4            2639       13318    85783320    5  Extended
    Partition 4 does not end on cylinder boundary.
    /dev/sda5            2639       12983    83091928+  83  Linux
    /dev/sda6           12983       13318     2691328+  82  Linux swap / Solaris
    
    Partition table entries are not in disk order
    and also

    Code:
    [0 amanda@luna]$ df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/sda5              78G   21G   54G  28% /
    udev                  1.5G  324K  1.5G   1% /dev
    none                  1.5G  648K  1.5G   1% /dev/shm
    none                  1.5G   92K  1.5G   1% /var/run
    none                  1.5G     0  1.5G   0% /var/lock
    none                  1.5G     0  1.5G   0% /lib/init/rw
    /home/amanda/.Private
                           78G   21G   54G  28% /home/amanda
    Last edited by amanda; December 11th, 2009 at 07:22 PM.

  2. #2
    Join Date
    May 2009
    Location
    North West England
    Beans
    2,674
    Distro
    Ubuntu Development Release

    Re: Partition Cleanup

    Quote Originally Posted by amanda View Post
    Soooo: I got a new laptop. I know I'm going to need to use the proprietary OS that came with it so I thought I'd dual boot. I'll skip the shaggy dog story and cut to the chase which is that I'm pretty happy with my machine over all but I've got partitions all over the place and what I'd like to do is clean them up *without* reinstalling. One problem is that a partition which bears the boot flag is actually smack in the middle of some unallocated space.

    I'm not convinced that this partition is really my boot partition but I don't fully understand ... um ... booting. I'd like to understand it better so I can make wise decisions about how to use my space better. Suggestions?

    I'm reading this: https://help.ubuntu.com/community/Grub2 now.

    Thanks!

    Code:
    [0 amanda@luna]$ sudo fdisk -l
    [sudo] password for amanda: 
    
    Disk /dev/sda: 120.0 GB, 120034123776 bytes
    255 heads, 63 sectors/track, 14593 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0xaf27f150
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *           1         192     1536000    7  HPFS/NTFS
    Partition 1 does not end on cylinder boundary.
    /dev/sda2             193        2639    19648440    7  HPFS/NTFS
    Partition 2 does not end on cylinder boundary.
    /dev/sda3           13755       14593     6735576    7  HPFS/NTFS
    Partition 3 does not end on cylinder boundary.
    /dev/sda4            2639       13318    85783320    5  Extended
    Partition 4 does not end on cylinder boundary.
    /dev/sda5            2639       12983    83091928+  83  Linux
    /dev/sda6           12983       13318     2691328+  82  Linux swap / Solaris
    
    Partition table entries are not in disk order
    and also

    Code:
    [0 amanda@luna]$ df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/sda5              78G   21G   54G  28% /
    udev                  1.5G  324K  1.5G   1% /dev
    none                  1.5G  648K  1.5G   1% /dev/shm
    none                  1.5G   92K  1.5G   1% /var/run
    none                  1.5G     0  1.5G   0% /var/lock
    none                  1.5G     0  1.5G   0% /lib/init/rw
    /home/amanda/.Private
                           78G   21G   54G  28% /home/amanda
    Okies, very quickly. You can have 4 logical or 'parent' extended partitions sda1 - sda3 are Win logical partitions - at a guess, I'm surmising you have a Win Recovery partition.
    sda4 is a 'parent' extended partition. sda5 & sda6 are 'child' partitions of the parent partition.
    Hope that makes some sense to you, it is very basic intro to partitions !!

    sda5 (your ubuntu area) reports back that you've used 28% - Any thing below 80% is good. After 80% it's time to think about either some pruning or give it more room. Over 90% is SERIOUS.

    As rough calculation, it seems you have 2GB of swap - which is fine if you have 2GB of RAM. The 'loss' of a GB of disk space on your system is not really worth getting the scalpel out for.

    Regards,

    Phill.

  3. #3
    Join Date
    Oct 2005
    Beans
    81
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Partition Cleanup

    The space won't be an issue for a long time, but it was (is) making me kind of nuts to have such a scattered setup.

    The thing I realized I needed to do was to remove the ntfs partion at /dev/sda2 and re-create it to use the full available space between /dev/sda1 and /dev/sda4. So that was one thing.

    I still have about 6G between some unallocated space after /dev/sda5 but within /dev/sda4 (2.57 GiB) and after /dev/sda4 (3.35 GiB).

    I also found the "hidden" flag, which I set on the rescue partition and the "SERVICEV003" partition so I don't have to look at them.

    I'd still like to figure out whether or not /dev/sda1 is really my boot partition and whether I can safely overwrite it.

  4. #4
    Join Date
    Nov 2009
    Location
    Segur De Calafell, Spain
    Beans
    11,660
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Partition Cleanup

    Quote Originally Posted by amanda View Post
    The thing I realized I needed to do was to remove the ntfs partion at /dev/sda2 and re-create it to use the full available space between /dev/sda1 and /dev/sda4. So that was one thing.
    It doesn't look like there is more space between /dev/sda1 and /dev/sda4. /dev/sda2 is already taking all space between 193 and 2639 and then /dev/sda4 starts.

    PS. Also there is no free space inside /dev/sda4, it's taken by / and swap.
    Yes, there is some space after /dev/sda4 between 13318 and 13755, and that is all.
    Last edited by darkod; December 11th, 2009 at 10:54 PM.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

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