Live USB sticks are great to troubleshoot problem Linux systems and Ubuntu live-USB is excellent.
But it would be nice if you could use the free space on the disk to carry extra data (like a backup of a MBR or something else)
But the layout of the stick gives issues for gparted as well as for gnome-disks.
The layout gparted shows is absurd:
- 4 kb /dev/sdc1
- 948.78 MB unused
- 2.28 MB FAT16 -57.65 GB unused
So I don't eve dare to make changes here.
The layout of gnome-disks looks better (stick is 16Gb):
- 1.0 Gb ISO9660
- 2.4 Mb FAT
- 15 Gb free space
Accessing the disk with gparted or trying to make a new partition with gnome-disks gives this error:
"The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes."
But the stick is fine, I used it several times for installing and livebooting.
As a matter of fact, I have tested this with other sticks of different brands and sizes, I have always the same issue.
note: I Use this ultrafast command to make a USB-disk bootable from an ISO file, this works much faster than any of the graphical tools:
(provided that the stick is /dev/sdc, check with dmesg)
dd if=ubuntu.iso of=/dev/sdc bs=512