Initialize empty image
f1c9645dbc14efddc7d8a322685f26eb oddinput.img
Empty image listing

Disk testimage: 10 MB, 10485760 bytes, 20480 sectors
255 heads, 63 sectors/track, 1 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Nonexistant file
fdisk: cannot open _a_file_that_does_not_exist_: No such file or directory
Too small file
fdisk: cannot open oddinput.toosmall: Invalid argument