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Jake
Asked: 2018-06-17 18:11:33 +0800 CST

How to resize partition via command line?

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I have Ubuntu installed on a VirtualBox VM. How can I resize the Linux partition (not the virtual drive)?

I already performed the VM resize using VBoxManage modifyhd to resize the virtual drive, but I need to resize the Linux partition. I do not have a GUI to gparted, so I need to resize the partition from the command line.

command-line resize partitioning

1 Answers

  1. If you use LVM (Logical Volume Manager):

    1. Expand physical volume (sda3 replace by your partition name):

      sudo pvresize /dev/sda3

    2. Check free space:

      sudo vgdisplay

    3. Add space to logical volume (VG00/share replace by your LV name):

      sudo lvresize –L -r 100G VG00/share

    4. Check changes:

      sudo lvdisplay

    If you don't use LVM:

    All below commands work for unmounted partition, so you should boot from another source, for example, from iso (liveCD image).

    1. Change partition size: sudo fdisk /dev/sda3:
    • remove old partition (d)
    • create new one, bigger (n)
    • write changes (w)

    1. Expand file system:

      sudo e2fsck -f /dev/sda3 sudo resize2fs /dev/sda3

    2. Reboot system, boot as usual.

    3. Check partitions:

      df

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