Partition Editor doesn't work on ubuntu 9.04 :(

[dn90]

I've installed Partition Editor on my Ubuntu 9.04 because it hasnt had it before in the OS pack. A reason why I'm wiriting here because a function of Resize/ Move doesn't work. What I'm able to do is only Unmount the main partition and after writes me and error:

Could not unmount /dev/sda1

The partition could not be unmounted from the following mount points:

/

Most likely other partitions are also mounted on these mount points. You are advised to unmount them manually.

Duno guys, if you have any ideas what i may try

[Jonathan183]

If you want to resize partitions you are better off doing this from a live CD ... Ubuntu live CD or PartedMagic will do

[dn90]

hmm I've tried already one called livecd from booting too and nothing well I'll try thanks Jonathan.

[dn90]

Gparted LiveCd*

[Jonathan183]

I found Gparted CD does not work on all my systems but the version of PartedMagic I have (2.0 ... their upto 4.something I think) works on all the systems I have.

[coopstah13]

You can't change partitions that are currently mounted and in use. If you need to resize a / partition, you need to use a livecd such as partedmagic as jonathan has suggested.