Frequently Asked Question

Use gdisk instead of fdisk. It isn't installed by default, so get it with:

sudo apt-get install gdisk
Then umount the drive and call gdisk for the device:

sudo gdisk /dev/sdX
It will prompt you to select the partition:

Found valid MBR and GPT. Which do you want to use?
1 - MBR
2 - GPT
3 - Create blank GPT
Select the GPT one. In my case, 2. Use the ? command to print the command list. Enter x for expert options, then z to zap the GPT table and all the data on the disc:

Command (? for help): x

Expert command (? for help): z
About to wipe out GPT on /dev/sdx. Proceed? (Y/N): y
GPT data structures destroyed! You may now partition the disk using fdisk or
other utilities.
Blank out MBR? (Y/N): y


PRIME SYSTEMS
7/211p, Nr Paravathani Furnitures
Nilambur Road
MANJERI - 676 121
Malappuram Dt.
Kerala

Email: mail@primesystems.in

Phone: 0483-2768070, 9495217070
Mob. 9895387070
9895387070