Some linux distributions impose to use
GUID Partition Table) insted of traditional
MBR. If you have an already installed linux system using
MBR partition table and you want to convert it to a freshly new
GPT table without data loss, here is the solution.
All you need is a GParted Live CD. You need to boot with the GParted Live CD and once the system started, in terminal you have to type the following commands (let’s assume
/dev/sda hard disk):
sudo gdisk /dev/sda
then type the
w command to convert
GPT partition table. You will get a message:
Find checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING PARTITIONS! Do you want to proceed (Y/N): Y
Y and if everything is ok with this convertion, you’ll get another message:
OK; writing new GUID partition table (GPT) to /dev/sda. The operation completed successfully.
That’s it! You can now boot with you new Linux distribution suppurtiong only GPT partition tables.