how to format a floppy disk for old macs

The CRC32 checksums for the System 6.0.2 and MacWrite II disk images are $ 1CEF7860 and $ C8540949, respectively. To copy a 720K A-Max formatted disk in drive A:, make an image of the disk and then write it back to a 720K DOS formatted disk (disk MUST be formatted). (RAWRITE is a 16-bit DOS command line utility, so only 8.3 filenames are permitted.) To make an image of a 720K A-Max formatted floppy disk in drive A:, use the command line: To write an image of a 720K A-Max formatted disk to a floppy disk in drive A:, use the command line: ADF image of your unknown PC-DOS/Amiga floppy disk to a high density floppy on my PC. You will recognize this program, Supamax. I have uploaded RAWRITE2 v1.1 to the Zone.

This means that the infection is likely to have taken place even before cosmicfrog got hold of have discovered that A-Max 720K formatted floppies can be copied on a PC with the DOS program RAWRITE.EXE. So if one was obtained by copying the other, then the infection must have been present at that time. However, it is a fact that the two MacWrite II disks are identical. For the virus to spread to a real Macintosh, it would be necessary to run one of the executable files on an infected disk, but my machines won't even mount the disks or images of them, so that should make them safe at least. The fact that it pre-dates Mac OS 8 makes it all the more likely that A-Max disks are vulnerable to it.įortunately, emulation is an isolated environment, so that should make it easier to contain the virus if we can confirm that it is present on one or more of the disks. The Wiki page confirms that it's a Macintosh virus, and it would appear that the threat is very real. Thanks for reporting this find, and for the link.

(unless prowler has that virus in his emulated Mac environment (Mini vMac), but I don't think so, since all the other images he prepared are clean). It would seem an old virus, so it may be possible that it was present on cosmic's floppies before prowler dumped them. dsk images (System and MacWrite) seem to have the aforementioned virus! I downloaded all three files from The Zone (from prowler): Originally Posted by prowler and cosmicfrog

How to format a floppy disk for old macs