I just installed Ubuntu 12.04.1 on a laptop, but whenever I turn on my computer, it still boots to Windows and GRUB doesn't seem to be working at all.
My partition scheme is as follows:
The point is, I installed Ubuntu 12.04.1 according to this scheme via the LiveUSB environment, but whenever I turn on my computer, the motherboard BIOS screen is shown, and then it jumps right to Windows and GRUB is skipped completely.
What can I do to fix this?
Grub should now load if it is actually installed on /dev/sda5
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:
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:
And here is the list from /dev/disk/by-uuid:
ubuntu@ubuntu:~$ ls -la /dev/disk/by-uuid
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
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.
You can perform the following steps:
comment out the lines for sda1 and sda3 in your /etc/fstab. this prevents them from being mounted.
reformat (and maybe even repartition) the two partitions. However, merging them will most likely only work, if they are stored physically behind each other on the disk.
invoke update-grub to make grub refresh its menu.
But be careful, your computer seems to boot from sda1. Depending on how you installed the second ubuntu, you might have to mark the new root / boot partition as bootable.