Re: Apple Disk Drives

[dempson@actrix.gen.nz (David Empson)]

Mark Cummings <NOTfigjams@primus.com.au> wrote:

> > Both the Apple 3.5 Drive and UniDisk 3.5 will work with 400 KB and 800
> > KB 3.5" disks: single or double sided respectively, double density in
> > both cases, using Apple's GCR data coding scheme and variable rotation
> > speeds, physically compatible with 400K and 800K disks on the Mac (you
> > just need software to support the Mac's file system, which is MFS for
> > 400K disks, HFS for 800K disks).
> 
> That's something that I didn't know. How do I format 400K or MFS on my GS or
> IIc, can't remember ever seing that option in System 6, or is it just on a
> Mac ?

I'm not aware of any support for formatting MFS disks.  The only MFS
support I know of on the Apple II is a ProDOS-8 application which can
copy files from an MFS disk.  I don't recall its name, nor whether it
can also copy files to an MFS disk (probably not).

HFS support is pretty good under GS/OS (apart from volume repair
utilities).  For ProDOS-8, there are A2FX and HFSLink.