The 4GB laptop flash disk is well recognized and partitionned in my 3.1 A600 but i can't manage to copy fully my hardrive backup on its boot partition, always fail during the process. Then i get checksum error and so on.
Works fine on my PC laptop with ide-usb adapter though.
These don't seem reliable for the amiga unfortunately, unless i am doing something wrong.
The 128 MB 3,5' drive works better as boot drive for my A1200 but conflict with my CD-ROM.