ubuntu@ubuntu:~$ sudo su
root@ubuntu:/home/ubuntu# cd /home/ubuntu/Downloads/
root@ubuntu:/home/ubuntu/Downloads# ls
gdisk_0.8.1-1build1_amd64.deb
root@ubuntu:/home/ubuntu/Downloads# dpkg -i gdisk_0.8.1-1build1_amd64.deb
Selecting previously unselected package gdisk.
(Reading database ... 147516 files and directories currently installed.)
Unpacking gdisk (from gdisk_0.8.1-1build1_amd64.deb) ...
Setting up gdisk (0.8.1-1build1) ...
Processing triggers for man-db ...
root@ubuntu:/home/ubuntu/Downloads#
root@ubuntu:/home/ubuntu/Downloads# gdisk
GPT fdisk (gdisk) version 0.8.1
Type device filename, or press <Enter> to exit: /dev/sda
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): x
Expert command (? for help): r
Recovery/transformation command (? for help): ?
b use backup GPT header (rebuilding main)
c load backup partition table from disk (rebuilding main)
d use main GPT header (rebuilding backup)
e load main partition table from disk (rebuilding backup)
f load MBR and build fresh GPT from it
g convert GPT into MBR and exit
h make hybrid MBR
i show detailed information on a partition
l load partition data from a backup file
m return to main menu
o print protective MBR data
p print the partition table
q quit without saving changes
t transform BSD disklabel partition
v verify disk
w write table to disk and exit
x extra functionality (experts only)
? print this menu
Recovery/transformation command (? for help): g
MBR command (? for help): ?
a toggle the active/boot flag
c recompute all CHS values
l set partition as logical
o omit partition
p print the MBR partition table
q quit without saving changes
r set partition as primary
s sort MBR partitions
t change partition type code
w write the MBR partition table to disk and exit
MBR command (? for help): w
Converted 4 partitions. Finalize and exit? (Y/N): y
GPT data structures destroyed! You may now partition the disk using fdisk or
other utilities.
root@ubuntu:/home/ubuntu/Downloads#