Aus dem VICE-Handbuch:
Zitatformat <diskname,id> [<type> <imagename>] [<unit>]
If unit is specified, format the disk in unit unit. If type and imagename are specified, create a new image named imagename, attach it to unit 8 and format it. type is a disk image type, and must be either x64, d64 (both VC1541/2031), g64 (VC1541/2031 but in GCR coding), d71 (VC1571), d81 (VC1581), d80 (CBM8050) or d82 (CBM8250/1001). Otherwise, format the disk in the current unit, if any.
Sollte also so gehen:
c1541 -format newdiskname,xx d64 dosfilename.ext