Steps taken from article here.
Check disk geometry of disk image file – copy this to a .sh file and run it against a .st disk image:
#!/bin/sh od -v -Ad -t u1 -w1 $1 | awk 'NR==20 {sl=$2} NR==21 {sh=$2} NR==25 {spt=$2} NR==27 {s=$2; print "Sides: " s " Sectors: " spt " Tracks: " (sh * 256 + sl) / spt / s; exit}'
Format a 720k floppy using the sector and cylinder numbers from the prior step:
superformat /dev/fd0 dd ds sect=10 cyl=80
Copy the image to the disk:
cp image.st /dev/fd0
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