A2 Disk Images to PC Tutorial and Help I saw this posted on the comp.emulators.apple2 Usenet newsgroup and thought it would be a nice article to make available. So, here it is. I do hope it give those PC folks that need such info an easy understanding of what problems they are having and how to do this sort of thing properly. Read it below. It certainly seems clear to me. From: Rubywand Reply-To: rubywand@swbell.net Newsgroups: comp.emulators.apple2 Date: Thu, 18 Nov 1999 06:23:24 -0600 NNTP-Posting-Date: Thu, 18 Nov 1999 04:23:42 PST Organization: SBC Internet Services Elliott Tepperman writes ... > > Sorry, I made a mistake in my previous description of how to get do files to > work. > here is the correct process. > 1) rename the .do file .gz > 2) unzip with gnuzip > 3) rename file that is unzipped (this file may have no extention) .dsk > --------------------------------------------------------------------------------- ....and, Rubywand replied: On a PC running Windows, WinZIP works well for unZipping .gz files. The reason so many users are having problems with .gz downloads seems to be the use of multiple "." chars in file names maintained on archives. Apple OS's like DOS 3.3 and ProDOS do not care about extra periods; but, Windows uses the "." to indicate the beginning of filetype suffix. A name like NarfgameDemo.do.gz can get snipped during download to NarfgameDemo.do and may need to be renamed to end with ".gz" to make it recognizable to a decompression utility. Once a 5.25" disk image file is decompressed, it should end with .do, .po, or .dsk . The way AppleWin treats these suffixes is ... .do - disk image data is assumed to be in DOS 3.3 sector order .po - disk image data is assumed to be in ProDOS sector order .dsk - the disk image data is checked to determine the ordering employed So, if a disk image file name ends with ".do" it had better be in DOS 3.3 order; and, if a disk image file name ends with ".po" it had better be in ProDOS order. If, for instance, a ProDOS order image has a name ending with ".do" the data will be mixed up when AppleWin tries to read from the disk image. It is okay to rename, say, "Narf.do" to "Narf.dsk" because it has become standard practice to take ".dsk" files to be in DOS 3.3 order. In fact, the ".do" suffix is seldom used anymore. ProDOS order disk images should not be renamed to end with ".dsk" because they will be assumed to be in DOS 3.3 order. This will cause problems for users who transfer disk image files using ADT or any other utility which works correctly only with DOS 3.3 order images. Rubywand --------------------------------------------------------------------------------- Well, there you have it. A simple and easy to understand 'Tutorial and Help' for al you PC folks to follow. That's All Folk's, Macprober