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View Full Version : [ubuntu] uninstalling unwanted distros



robjcor
August 18th, 2009, 05:24 PM
I'm a new linux user, and I started by installing several distros on my 40Gb hard drive. I've now settled on Ubuntu (Intrepid) and I want to uninstall the others to make more room. This is either so easy that it isn't worth mentioning anywhere (and I have looked everywhere I can think of) or only possible with a Windows CD (I don't have Windows on this machine), and even then only with considerable difficulty.
As far as I can make out, simply deleting the partitions for Suse, Debian and so on will create problems with GRUB. Is this so, and is there a simple solution?
I know that I can't be the only person with this problem, so if there's anyone out there who can point me in the right direction I'd be very grateful.
Thanks, Bob

realzippy
August 18th, 2009, 05:35 PM
gparted should do the job...

robjcor
August 19th, 2009, 02:18 PM
gparted should do the job...

OOPS! I should have asked a few more questions here. I deleted unwanted partitions with gparted and now get grub error 17 on booting. I thought that seemed too easy. Any further suggestions welcome. Bob

mcduck
August 19th, 2009, 02:27 PM
Just delete the useless partitions, and after that re-install Grub.

Here's one guide for re-installing Grub:
http://ubuntuforums.org/showthread.php?t=224351

If you also expand your current Ubuntu partition to use the available space this will change the partitions UUID, so you'll have to edit your /etc/fstab accordingly to use the new UUID. You can check the new UUID with the "blkid"-command.

And no, you don't need Windows CD to fix Linux installs. Some of us might find suggesting such things insulting.. (just kidding :D)

realzippy
August 19th, 2009, 06:40 PM
...SuperGrubDisc restores GRUB easily:

http://www.supergrubdisk.org/index.php

robjcor
August 21st, 2009, 07:12 PM
First of all thanks very much to realzippy and mcduck. Everything is now sorted and working fine. I really appreciated your help.

Just in case anyone else reads this with the same problem, there were a couple of twists in the story which may be useful. First of all, I tried the basic method given on this link from mcduck.

http://ubuntuforums.org/showthread.php?t=224351

It didn't work, so I downloaded an image from

http://www.supergrubdisk.org/index.php

as suggested by realzippy, burned it to cd and booted. No problems, straight into the lost ubuntu partition - it was good to see it was still there. BUT the disk didn't change anything, and when I removed it, error 17 reappeared.
I booted from the cd again, followed the more advanced technique beginning sudo mkdir /mnt/root from http://ubuntuforums.org/showthread.php?t=224351, and this time everything was fine. Hooray!

A couple of points arise. First of all, did I download the correct supergrub disk? There were so many downloads to choose from that I may not have done. I downloaded the grub rescue disk.

Secondly, I have another computer (running windows at the moment, sorry!) so there wasn't a problem accessing information on this forum even when I couldn't boot into ubuntu. But what could I have done to avoid all these problems in the first place? If anyone out there can tell me, I'm sure it would be helpful to others in the same situation. I couldn't find anything relevant when I searched. The only thing which cropped up again and again was if you were dual-booting linux and windows, not if you had multiple linux distros and wanted to get rid of some of them.

Anyway, thanks once again for your help. I love the linux philosophy, and this forum convinces me that linux is the way to go.