I'll take more of a look tonight(and release v0.61), but right now I've fixed the fsck issue(I -thought- I'd forgotten something).

As for write-USB-Mass-Storage, remember that you've got to be root to write to the OptFS/2GB FS. I just tried that and had it work, so...

Tigerite, I'll look at your code tonight. Do you have a set of commands/options that you've gotten working? (i.e. what commands, options, and order you need to produce a valid file)