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How to remove a second Ubuntu install?

rated 0 times [ 5] [ 0] / answers: 1 / hits: 15958 / 1 Year ago, tue, january 24, 2023, 9:41:50

I installed Windows XP in dual-boot with Ubuntu to play Skyrim and that ended up breaking GRUB. After trying zillions of things to fix it (including using boot-repair), I installed Ubuntu in a new partition, side-by-side with the old Ubuntu and XP. After that GRUB worked again and I can now access my old Ubuntu and XP, but now I have two Ubuntus and I want to drop the new one. How do I do that without breaking GRUB again?

Here's the result for sudo fdisk -l:

Device      Boot    Start       End     Blocks      Id  System

/dev/sda1   *           1       17303   138986316   83  Linux

/dev/sda2           19799       29359    76798732+   7  HPFS/NTFS

/dev/sda3           29360       30401     8369865   82  Linux swap / Solaris

/dev/sda4           17304       19798    20040705    5  Extended

/dev/sda5           17304       17595     2343936   83  Linux

/dev/sda6           17595       18811     9764864   83  Linux

/dev/sda7           18811       19677     6952960   83  Linux

/dev/sda8           19677       19798      975872   82  Linux swap / Solaris

sda1 and sda3 are my old Ubuntu, sda2 is Windows XP, and sda4 to sda8 are the new Ubuntu install (I created different partitions for /boot, / and /home, should not have done that just to fix GRUB).

And /etc/fstab looks like this:

# <file system> <mount point>   <type>  <options>       <dump>  <pass>

proc            /proc           proc    nodev,noexec,nosuid 0       0

# / was on /dev/sda1 during installation

UUID=e41d0403-82db-4379-9d3e-b67cb06fc08d /               ext4    errors=remount-ro 0       1

# swap was on /dev/sda5 during installation

UUID=5a54507a-82f0-4275-b531-f88b9cfabbcb none            swap    sw              0       0

And here is the report from Boot-Repair:

http://paste.ubuntu.com/740188/

And here is the list from /dev/disk/by-uuid:

ubuntu@ubuntu:~$ ls -la /dev/disk/by-uuid

total 0

drwxr-xr-x 2 root root 140 2011-11-16 13:21 .

drwxr-xr-x 6 root root 120 2011-11-16 13:19 ..

lrwxrwxrwx 1 root root  10 2011-11-16 13:19 11F7-4048 -> ../../sdb1

lrwxrwxrwx 1 root root  10 2011-11-16 13:19 40b84b5c-dd62-4267-a41c-e5afc0c178a4 -> ../../sda3

lrwxrwxrwx 1 root root  11 2011-11-16 13:19 82672ddd-82ac-4d41-98c2-fc359f248f3b -> ../../loop1

lrwxrwxrwx 1 root root  10 2011-11-16 13:21 DE34ED7A34ED5655 -> ../../sda2

lrwxrwxrwx 1 root root  10 2011-11-16 13:21 e41d0403-82db-4379-9d3e-b67cb06fc08d -> ../../sda1

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eballxeye

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2 Years ago

answered 1 Year ago darpose · Accepted Answer

Boot in to Ubuntu installation that you want to keep. Delete the partitions for the other Ubuntu install and run update-grub.

So if you want to keep your old linux installation and get rid of the one you installed later, just boot into your old linux installation and start gparted or disk-utility (which ever you like). From there delete sda4, sda5, sda6, sda7 and sda8 i.e all the partitions you created for new installation of Ubuntu. Now open terminal and run sudo update-grub. This will update the grub and remove the other Ubuntu install from the grub startup screen.