See: srchdisk. Same thing, except this one only reads one sector at a time. Reason being,
that damaged disks need to have bad sectors reported, but all readable sectors
read and searched. Srchdisk uses 80-sector reads, which severly limits read-error
resolution. Also, this one uses INT 25 to read the disk, where SRCHDISK uses INT 21
AH=73 and a control-table (due to huge sector-numbers).

see also: SRCHDISK, READSECT, FINDALL,

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