I am unable to create an extended partition on my disk in Gparted: the option is greyed out! I resized the primary partition on the disk to leave some unallocated space, and I wanted to make the extended partition there so I could make 3 logical partitions in there, but I can't.
I do not have any other extended partitions on the disk; the only other partition is the primary partition which I do not want to lose data from.
As you can see in this screenshot, the "Extended Partition" option is greyed out and cannot be selected.
Any help would be appreciated here! I apologise for the small text, it is because my laptop has a 1080p resolution, so the system is scaled for that.
EDIT 1: I believe the partition table is
msdos (not 100% certain), I can only have 2 primary partitions maximum...
EDIT 2: Output of
sudo fdisk -l /dev/sdb:
ubuntu@ubuntu:~$ sudo fdisk -l /dev/sdb Disk /dev/sdb: 114.6 GiB, 123010547712 bytes, 240254976 sectors Disk model: Ultra Fit Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x73736572 Device Boot Start End Sectors Size Id Type /dev/sdb1 1920221984 3736432267 1816210284 866G 72 unknown /dev/sdb2 1936028192 3889681299 1953653108 931.6G 6c unknown /dev/sdb3 0 0 0 0B 0 Empty /dev/sdb4 27722122 27722568 447 223.5K 0 Empty Partition table entries are not in disk order.
(By the way, in this state there is only the 1 partition on the disk which is NTFS)