Convert Ubuntu MBR to GPT

Check if GPT is not enabled
gdisk /dev/sda
Create a backup of the server
Increase the size of the hard disk if desired
Do without the boot partition to free space at the beginning of the HDD:
copy /boot/ to /boot2/
umount /boot
copy /boot2/ to /boot/
edit /etc/fstab
Insert bootrepair CD and boot from it
Create a 10 Mbyte partition with Gparted at the beginning. You can use the previously emptied partition ‘boot’. Just delete the boot partition and create a new 10 Mbyte partition.
gdisk /dev/sda (No block error message or similar should be displayed). Activate the GPT partition with ‘w’.
Restart Gparted and mark the 10 Mbyte partition as ‘bios_grub’.
Run the bootrepair wizard
Increase the size of the main partition with Gparted.
Boot the server and execute the following commandlvextend –resizefs -l +100%FREE /dev/mapper/sr65–vg-root
(Please adjust LVM drive names accordingly)

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Administration