IMageDisk Analyzer 1.18 / Mar 12 2012
IMD 1.17:  2/02/1990 22:52:36

820-II 5 1/4

BOOT DISC #4

CP/M

(Serial #) 1/11/83

Required cylinders: 77
Required heads    : 1
Data rate         : 500kbps
Est. maximum track: 5623 bytes

Possible drives/options to write B16D61.IMD :

 3.5" HD 80-track   NOTE: *1 *2
   Double-step: OFF

 5.25" HD 80-track   NOTE: *1
   Double-step: OFF

 8" 77-track
   Double-step: OFF

*1 77 track image likely from 8" drive.
*2 Should fit on 360rpm drive, 300rpm drive will leave long end gap.