About the possible partition layout on a USB stick:
Windows 98? usually formats the entire stick as a loop device so when you want to see what's on it from OF just type:
ls hd0 <- list entire stick
Linux can format the stick with a regular msdos partition table:
ls hd0:0 <- list first partition on stick
CBM Amiga 1200 + 4MB AMITEK with 33MHz 68882 FPU
PowerBook5,4 1024MB 1333MHz G4