Where can I find out about different floppy disk formats?
Here is a table of floppy disk formats I have built up over the years: disk speed data rate encode trk sector trk/hd size in disk size” rpm kb/s scheme kb cnt*sz count kBytes type ——————————————————————— 8 360 500 FM 41.67 26*128 77/1 260 SSSD (8) 8 360 500 FM 41.67 26*128 77/2 520 DSSD (8) 8 360 500 MFM 83.33 26*256 77/1 520 SSDD (9) 8 360 500 MFM 83.33 26*256 77/2 1040 DSDD (9) 5.25 300 250 FM 25.00 8*256 40/1 80 SSSD 5.25 300 250 FM 25.00 8*256 40/2 160 DSSD 5.25 300 245 GCR 49.00 16*256 35/1 140 SSDD (1) 5.25 300 250 MFM 50.00 8*512 40/1 160 SSDD (3) 5.25 300 250 MFM 50.00 9*512 40/1 180 SSDD (3) 5.25 300 250 MFM 50.00 8*512 40/2 320 DSDD (3) 5.25 300 250 MFM 50.00 9*512 40/2 360 DSDD (3) 5.25 300 250 MFM 50.00 9*512 80/2 720 DSDD 5.25 360 300 MFM 50.00 9*512 40/2 360 DSDD (4) 5.25 360 300 MFM 50.00 9*512 80/2 720 DSDD 5.25 360 500 MFM 83.33 15*512 80/2 1200 DSHD (4) 3.5 300 250 MFM 50.00 9*512 80/2 720 DSDD (5) 3.5 300 250 MFM 50.00 5*
