Update GRUB to reflect changed partition location

Posted by soandos on Ask Ubuntu See other posts from Ask Ubuntu or by soandos
Published on 2012-06-22T02:31:04Z Indexed on 2012/06/22 3:24 UTC
Read the original article Hit count: 210

Filed under:

grub2

|

gparted

I currently have 3 partitions: Windows, Ubuntu, and swap.

I want to move my windows partition by about 20GB. When I try to do this in GParted, it tells me that this will mess up GRUB, and that there is a page that can resolve these issues.

However, this page does not actually mention my issue. I am not moving my boot partition (Ubuntu).

How can I force GRUB to look for operating systems that are on the drive? I know that this is possible, because when Ubuntu was installed it found Windows without any issues.

Additionally, if I create a copy of a partition, how can I add that to GRUB (I assume it will be the same command as above, but if not, what would it be)?

Note: OS prober is mentioned here but it doest not list how to use it, or where to find it.

© Ask Ubuntu or respective owner

Related posts about grub2

How to enable boot timeout in Grub2?

as seen on Super User - Search for 'Super User'
I'm am trying to enable the boot timeout selection in grub2 on Ubuntu 9.10. I modified /etc/default/grub: GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=false GRUB_TIMEOUT=2 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="splash quiet" GRUB_CMDLINE_LINUX="" and… >>> More
Windows 8 changes GRUB2 in every boot!

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I've installed Win8 and Ubuntu 12.10 both UEFI style (win8 first then ubuntu). GRUB2 shows me Both Ubuntu and Win8 entries. If I boot into Ubuntu is fine. I could reboot anytime I will see GRUB2 unchanged. The story changes when I Boot into Win8. When I boot to Win8 using GRUB2 it takes me to the… >>> More
How to install Grub2 under several common scenarios

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I feel the community has long needed a clean guide on how to install Grub2 under a a few extremely common scenarios. I will accept answer as solved when it has one section per scenario and assumes nothing other than what is specified. Please add to the existing answer, wiki style, keeping to the original… >>> More
Make bootable iso with grub chainloading

as seen on Super User - Search for 'Super User'
My parents' pc has windows 7's boot manager installed at MBR and grub2 is installed on /dev/sda2 (booting linux on /dev/sda2). I want to make a bootable cd so that when booted from it just chainloads into the boot manager on the second partition. I assume using grub rather than grub2 for this will… >>> More
So HERE'S how you get into grub2 if there's no boot menu in Ubuntu Lucid 10.04

as seen on Internet.com - Search for 'Internet.com'
<b>Click:</b> "I installed Ubuntu 10.04 Lucid from a daily build yet couldn't boot into my fresh new desktop because I needed to add nomodeset to the grub2 boot line and didn't know how to do that because there was no boot screen visible." >>> More

Related posts about gparted

gparted won't boot from liveCD

as seen on Super User - Search for 'Super User'
Hello, Fedora 12 2.6.32.9-70.fc12.i686 I downloaded the gparted iso and burnt it to a CD. gparted-live-0.5.2-1 This GParted Live was created by: create-gparted-live -l en -b u -e e -d sid -m http://free.nchc.org.tw/debian -s http://free.nchc.org.tw/debian-security -g http://free.nchc.org.tw/drbl-core… >>> More
gparted installed on OpenSuse shows all file system types as greyed out except for hfs

as seen on Server Fault - Search for 'Server Fault'
I have had this problem before and fixed it, but I don't recall how I did it and I did not record it (sadness :( ) I have all the requisite commands installed on OpenSuse to support gparted's efforts in creating any of the supported file systems. I recall that the problem was that gparted could not… >>> More
gparted installed on OpenSuse shows all file system types as greyed out except for hfs

as seen on Super User - Search for 'Super User'
I have had this problem before and fixed it, but I don't recall how I did it and I did not record it (sadness :( ) I have all the requisite commands installed on OpenSuse to support gparted's efforts in creating any of the supported file systems. I recall that the problem was that gparted could not… >>> More
Gparted can't create partition table

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Here's what the problem is. About a day or so ago I used Gparted live cd to create 3 NTFS primary partitions on my external 500 gig Goflex and one extended with 2 logical partitiones. I had planned to install windows 8 on the first partition, then ubuntu and kubuntu on the other 2. After I finished… >>> More
ext4 jbd2 journaling active even on empty filesystem

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have been having several issues with my ext4 filesystems that seem to be due to jbd2 journaling. I made a related post here and am rephrasing it with the hope that someone may be able to help. For a minimal example, I start with an empty 8gb USB stick and use gparted to create one ext4 partition… >>> More