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    Creative Commons License
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    PyBlosxom

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    Tue, 15 Dec 2015


    /Admin/virtualization/virtualBox: Increase or Decrease Storage Space for a VirtualBox VM

    Increasing is nearly trivial:

    VBoxManage modifyhd virtualBoxUbuntu.vdi --resize 15000

    for a 15G drive. Then inside the running VM use gparted to increast the main partition size to use all the newly added space.

    To decrease, one can only reduce the amount of variable space used by the image by freeing up all unused space, apparently one cannot reduce the upper limit.

    To free up space, delete unwanted files on the VM, install the zerofree package, then reboot into recovery mode and mount the root (main) partition ro:

    mount -n -o remount,ro -t ext3 /dev/sda1 /

    Then zero out the unused space in the partition:

    zerofree -v /dev/sda1

    And compact the image:

    VBoxManage modifyhd virtualBoxUbuntu.vdi --compact

    You should find the file system that the vdi is located in now has a lot more free space.

    [1] http://dantwining.co.uk/2011/07/18/how-to-shrink-a-dynamically-expanding-guest-virtualbox-image/

    posted at: 02:38 | path: /Admin/virtualization/virtualBox | permanent link to this entry