I used the dd
command to burn a bootable Ubuntu distro (ISO file) to my USB. Now the entire drive is completely "read only". It's impossible to modify it! I tried switching to root and executed several different commands:
hdparm -r0
sudo chmod -R -v 777 *
chown -R -v
chmod ugo+wx /
Basically, all the tricks listed on StackExchange by people that experienced the same problem failed. Nothing seems to work!! I got so frustrated that I walked over and plugged it into a WinXP box to get it to r/w. It managed to copy a small file to a 2MB boot partition that appeared in Windows Explorer as FAT32.
Changing the partition type with fdisk, somehow split the USB into two partitions, the small 2MB FAT32 partition that I copied the WinXP file to and the large partition that holds the Ubuntu data. My head is stuck in the sand. Mounting it with the RW option didn't work either.