(Re)Install grub lvm raid

Assume: Reinstalled grub after windows to boot a raid called Linux

1. Boot into a live disc

2. Install mdadm and lvm2

3. Probe modules

• $sudo modprobe raid5 dm-mod

4. Assemble raid array

• $sudo mdadm --assemble --scan

5. Mount array from either /dev/*RAIDNAME* or /dev/mapper/*PARTITIONNAMES*

• $sudo mount /dev/Linux/UbuntuRoot /mnt
• #If you have a seperate /boot
• $sudo mount /dev/Linux/UbuntuBoot /mnt/boot

6. Mount and bind system resources

• $sudo mount --bind /dev /mnt/dev
• $sudo mount --bind /proc /mnt/proc
• $sudo mount --bind /var /mnt/var
• $sudo mount --bind /sys /mnt/sys
• $sudo mount --bind /dev/pts /mnt/dev/pts

7. Copy Internet connection settings to mnt

• $sudo cp /etc/resolv.conf /mnt/etc/

8. Chroot into existing raid/lvm

• $sudo chroot /mnt

9. Update and remove grub

• $sudo apt-get update
• $sudo apt-get remove grub-pc --purge

10. When finished install grub-pc which will scan for partitions

• $sudo apt-get install grub-pc

It will try to ask for email information, just hit enter for default.

11. Pick which drives to install grub onto

12. $exit

$exit