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- The ERASECHK program will measure the effectiveness of bulk
- erasure of a floppy disk. If you have sensitive data, it would be
- wise to test a floppy after using an eraser to make sure no data
- remains on the disk.
-
- The program is written in Turbo Pascal (version 3.0) and runs
- under IBM PC-DOS, but it should also work under MS-DOS on IBM-
- PC clones and will probably run under Turbo 2.0. Currently the B:
- drive is hardcoded into the program as the drive the erasechk will
- be performed on.
-
- ERASECHK attempts to read each sector on a disk and summarizes
- the results. A normal 360k-byte disk has 720 sectors (40 tracks x 2
- heads x 9 sectors/track), each of which will be readable (return
- code 0). A blank disk will have 720 "address mark not found" errors
- (return code 2). Partially erased disks will have mixed results:
- some sectors will be missing, others will have CRC (cyclic redundancy
- check) errors (return code 16), and some will be unaffected.