GParted won't let me edit a partition

Question

I have this 72 GB hard disk that I installed Ubuntu 14.02 LTS 64 bit on. Now, I want to split it and leave 50 GBs for Ubuntu and install in the to-be-created partition the server version of the OS.

The issue at hand is that GParted won't let me change the size of the partition I want to shrink. It reads : minimum size = 72222 mb , maximum size = 7222 mb and obviously doesn't allow me to edit the partition.

Have you unmounted the disk? The only way to edit the partition is unmount the disk. — Papa Casper, Jul 03 '15 at 06:07
I do mot know how to unmount a disk. Could you tell me a bit about that? — WordLegio, Jul 03 '15 at 06:35
You can also install gparted to a pen drive and run it from the pendrive. — fixit7, Feb 28 '19 at 04:52

score 11 · Accepted Answer · edited Mar 02 '19 at 05:38

11

Firstly, you can not work with mounted partitions. Since you are trying to modify the partition on which Ubuntu is installed, you can't do this from your installed OS as you cant unmount the partition. So what you have to do is:

Create a live USB/DVD and boot into Ubuntu Live
In Gparted you start from the live environment, unmount the partition. If the partition is mounted, 'key' icon will be present next to the name of the partition. To unmount from Gparted, just right click on the partition and click Unmount.
Now modify the partition.
Reboot and Voilà! It's done.

edited Mar 02 '19 at 05:38

mchid

43,546
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answered Jul 03 '15 at 06:17

daltonfury42

5,499

So should I use the USB I installed it with, boot into try without installing, getting gparted in that mode and simply modify it from there? – WordLegio Jul 03 '15 at 06:35
1

@WordLegio, exactly! Just don't forget to unmount your partition. – daltonfury42 Jul 03 '15 at 07:50
I'll try it asap! Thank you dear sir flips fedora – WordLegio Jul 03 '15 at 08:04

GParted won't let me edit a partition

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