Stolen off of Usenet :)
Common Apple II disk formats: - Universal Disk Images (.2mg) Spec available on www.a2central.com as FTN $e0/0130. - DiskCopy 4.2 (.dsk) Spec available as FTN $e0/0005. - Copy II Plus (.img) Unadorned sectors, but in "raw" order. - Sim //e HDV images (.hdv) Unadorned sectors with a header. - Dalton's Disk Disintegrator (DDD v2.1+, DDD Pro v1.1+) (.ddd) Not described anywhere, but a source code disassembly is available. - Unadorned sector-format files (.po, .do, .raw, .hdv) The "DSK" format, which is usually in DOS or ProDOS sector order. DiskCopy 6 (.dc6) is usually just this. - Unadorned nibble-format files (.nib, .nb2) Raw nibbles, with 6384 or 6656 bytes per track. - ShrinkIt (NuFX) compressed disk images (.shk, .sdk) Spec available as $e0/8002. There are a few others (e.g. Davex archived volumes, $e0/8004), and I think Apple Oasis has its own. The above are often stored with gzip compression or (ick) in a ZIP archive on FTP sites. The real trick is figuring out whether an unadorned 5.25" image is in DOS, ProDOS, or "physical" order. Also, don't make the mistake I made in CiderPress 1.0 and assume that all volumes are going to be multiples of something nice, like 4K. It's possible to have odd-sized ProDOS volumes, mostly from Windows/Mac/UNIX utilities that create a full-sized HD volume but don't actually write the blocks until necessary. -- Send mail to [EMAIL PROTECTED] (Andy McFadden) - http://www.fadden.com/ CD-Recordable FAQ - http://www.cdrfaq.org/ CiderPress Apple II archive utility for Windows - http://www.faddensoft.com/ Steve Conrad 810 Main Henrietta, MO 64036 816-494-5692 http://sasha91.0pi.com www.fortunecity.com/rivendell/stonekeep/600 It is no secret (nor should it come as any surprise) that humankind's most noble impulses often surface during the most trying of times, that human spirit rises to the challenge when faced with adversity, that human strength is born from human failings...Is it any wonder, then, that the SDF-1 crew became a tighter family after the fortress had been exiled than it had before? From the log of Captain (later Admiral) Henry Gloval -- Apple2list is sponsored by <http://lowendmac.com/> and... / Buy books, CDs, videos, and more from Amazon.com \ / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ Support Low End Mac <http://lowendmac.com/lists/support.html> Apple2list info: <http://lowendmac.com/lists/apple2.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
