DOS disk read test program

On 07/18/2014 10:51 PM, Fred Cisin wrote: I think the disk could be larger, could it not (although practical maximum for the consumer drive technology of the era was probably around 120MB)? It was the initial FAT16 implementation that topped out at 32MB, so a drive would have to be partitioned (and I don't recall what the limit there would be - although I think the CHS addressing scheme topped out at 8GB, presumably limits on the number of partitions possible would come into play first). I don't think there was anything in 3.10 which stopped it from addressing a partition beyond the 32M boundary, but maybe I'm wrong. I'd assume that the drive test program would work at the drive level, not at the partition level. FAT16b came in with DOS 3.31, and I think its individual partition size was then capped at 2GB (at least assuming 512-byte sector sizes). cheers Jules