I have a box with Ubuntu 12.04, and just did a apt-get upgrade. I'm presented with a dialogue to update my GRUB bootloader, but with the following message:
The GRUB boot loader was previously installed to a disk that is no longer present, or whose unique identifier has changed for some reason. It is important to make sure that the installed GRUB core image stays in sync with GRUB modules and grub.cfg. Please check again to make sure that GRUB is written to the appropriate boot devices. If you're unsure which drive is designated as boot drive by your BIOS, it is often a good idea to install GRUB to all of them. Note: it is possible to install GRUB to partition boot records as well, and some appropriate partitions are offered here. However, this forces GRUB to use the blocklist mechanism, which makes it less reliable, and therefore is not recommended. GRUB install devices: [ ] /dev/sda (3000592 MB; ST3000DM001-9YN166) [ ] /dev/sdb (3000592 MB; ST3000DM001-9YN166) [ ] /dev/md1 (536 MB; rescue:1) [ ] /dev/md2 (1099510 MB; rescue:2)
I'm worried that choosing the wrong option will render my box unbootable. I don't have physical access to it, as it's a box in a cloud. Please advice!
This is my /etc/fstab:
proc /proc proc defaults 0 0 /dev/md/0 none swap sw 0 0 /dev/md/1 /boot ext3 defaults 0 0 /dev/md/2 / ext4 defaults 0 0 /dev/md/3 /home ext4 defaults 0 0
This is my df -h:
Filesystem Size Used Avail Use% Mounted on /dev/md2 1016G 127G 838G 14% / udev 16G 4.0K 16G 1% /dev tmpfs 6.3G 768K 6.3G 1% /run none 5.0M 0 5.0M 0% /run/lock none 16G 0 16G 0% /run/shm /dev/md1 496M 44M 427M 10% /boot /dev/md3 1.7T 368G 1.3T 23% /home