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I have the partitions in my computer(11.10) as follows.

  • /dev/sda1 mountpoint-root(/) flags-boot 148GB
  • /dev/sda2 1GB
  • /dev/sda5 1GB

I have 70GB free space on /dev/sda1. I want to create a 10GB partition here to keep my documents because I'm planning to install 12.04.

When I try to do it with GParted Partition Utility it doesn't let me unmount /dev/sda1 in order to resize it and create a new partition.

Please give me suggestion on what to do.

3 Answers 3

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You can't unmount sda1, because you are currently running Ubuntu from it. Try to do with a live CD/flash drive, that should do the trick, but don't forget to backup your data before tampering with gparted and your partition.

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  • Do you mean to boot with a live CD and then create a new partition in the free space of sda1?
    – PasanW
    Dec 14, 2012 at 3:18
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    No, boot into a live CD and then run gparted or whatever program you want to use for resizing your partition. Dec 14, 2012 at 3:33
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GParted doesn't let you unmount the /dev/sda1 partition because Ubuntu is running on /dev/sda1. You can download GParted LiveCD from http://downloads.sourceforge.net/gparted/gparted-live-0.18.0-1-i486.iso . Burn it to a CD and boot with it. Now you can resize any partitions because every one of them is unmounted. Hope this helps :)

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You have to use live usb or CD. You can use gparted for resize your root partition, which is given by default in livecd. Open terminal and type sudo gparted to open it.

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  • Or just click on it in the menu...
    – psusi
    Dec 14, 2012 at 3:28

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