Example on macOS (current) https://drive.google.com/open?id=0B_2Asp8DGjJ9ZllUTXM0ZDBveEk It's an 8G stick, but there are three partitions totally less than 20M. Formatting any of the partitions will get me no where; and I can't even add partitions in the partition UI (oops). What I have to do is click on the stick itself, not any of its volumes, click Erase, and give it a new partition map. Plus it defaults to legacy Apple Partition Map because we're using a fragment of APM to trick certain Mac firmwares into booting in EFI mode from USB sticks. What's going on is the ISO 9660 image is not on a partition (it's not meant to be combined with partitioning of any kind). It's basically a hidden payload. The MBR map is there to boot BIOS computers, APM for some Macs, and GPT for UEFI computers. The other thing is ISO 9660 since it's an optical format specifies 2048 byte sectors and I guess this causes confusion elsewhere (I'm handwaving on this one because I can't remember exactly, maybe mbriza will chime in) since USB sticks are 512 byte sectors; and they end up appearing much larger than they really are or something? Meanwhile in GNOME, it sees this same stick rather differently because it ignores the APM and GPT, preferring to honor the MBR. I don't know off hand what sees all three partition maps and knows to wipe all three signatures, so there could even be really weird latent after effects even if something successfully reformats the stick. Chris Murphy _______________________________________________ desktop mailing list -- desktop@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to desktop-leave@xxxxxxxxxxxxxxxxxxxxxxx
