On Jul 9, 10:25 pm, "Simon D. Williams" <b...@chebucto.ns.ca> wrote: > Hello, > Most of > the files are exactly 1024 bytes long, but they use 6 blocks on disk... is > this normal for DOS or is Copy II+ causing the anomaly? DOS is counting sectors, not blocks. A block in ProDOS is 512 bytes; a sector is 256 bytes. If you BSAVE JUNK,A$1000,L1024 on ProDOS, it takes 3. The same thing on DOS takes 6.