[comp.sys.ibm.pc] HELP, How to read a Macintosh disk ?

khioe@mona.Jpl.Nasa.Gov (Kent Hioe) (04/09/91)

Hi, does any body know if there is a way to read a macintosh diskette from a PC ?


Thanks 

Kent 
khioe@mona.jpl.nasa.gov
elroy!mona.jpl.nasa.gov!khioe

knotts@hpl-opus.hpl.hp.com (Tom Knotts) (04/11/91)

Hi, does any body know if there is a way to read a macintosh diskette from a PC ?

One method is to buy the Deluxe Option Board. This half-height board is
inserted between the Floppy controller and a 3.5" 1.44-Meg floppy drive.
When normal DOS commands are issued, such as cp and dir, the board is
transparent. But when DOS commands are preceeded with `m', mcp, mdir, etc.,
the board intercepts and turns the drive into an 800K MAC drive. Then
MAC disks can be read, formatted, copied to and from.

A PC drive turns at a constant speed; a MAC drive turns at different
speeds depending on where the head is; when closer to the center, the drive
turns more slowly so that one turn on the MAC disk has the same amount
of data. The Options board cannot change the PC disk speed; this
is fixed. So it changes the rate at which data is written and read from
the disk, thereby having the same effect.

One warning; the board is only guaranteed to work for certain drives
such as the TEAK. The PC drive must be 1.44Meg, and the MAC disk density
can only be 400K or 800K. It costs about $115 mail order. It's one of
the best $115 I've ever spent.

As an added plus, the product also allows to copy disks that have been
copy protected, and do direct bit scanning and editing of (PC) disks.

tom