I want to delete my extended partition of ext4 in ubuntu. I using disk utility but can't delete or format. please tell me the procedure through terminal.
Don’t edit partitions while they’re in use. If you want to edit system partitions, boot from a live CD first.
After in command mode, (type 'm' if you want the help menu) you will use 'p' to delete the partition. After this, it prompts for partition number, which is just the 'x' from 'sdax'. Then use 'w' to actually write the change.