Edit: I have just noticed that even after reformating the usb stick that in gparted there is a red circle with an exclamation mark and clicking on it brings up the warning.
plain floppy: device "/dev/sda" busy (Resource temporarily unavailable): Cannot initialize '::' mlabel: Cannot initialize drive
I reformatted the usb stick to FAT 32 via both gparted and Nautilus. How can I get rid of this message.
22 Answers
I found the answer after a lot of trial and error. First of all I reformatted the usb stick with FAT32. In gparted the red warning circle was still there. I then made a new partition table using Device-Create partition, selecting MS-DOS and then clicking the green tick. I then selected Partition-New and then the green tick and then I had a new FAT32 partition without any warning.
Sounds like incorrect flash partitioning.
the easy fix (usually) is dd...
dd if=/dev/zero of=/dev/[usb_here]
that will wipe it finding the first and last sectors.
then format it normally