Copying Diskettes
June 18, 1999
Jim Harwood
If a diskette error occurs during the transfer, you are told what block created the error. Blocks 0 -499 are on Drive 0, 500 - 999 on Drive 1. Sometimes it is a soft error; hit <CR> a couple of times to retry. If the retry takes, the copy continues.
If the medium error is hard, and it occurred on the destination disk, try another disk. If the disk you are copying from has the error, things are more difficult. What I do in that case is copy up to the bad block as so, assuming the bad block is 273: 0 272 UP then 274 499 UP which finishes the disk except for 273. As you probably guessed, the UP command copies a series of blocks to the diskette in the upper drive. I then get another diskette that I know has a good copy of the bad block on it, put it in Drive 0, and copy 273 to the upper drive, as so: 273 273 UP .