Re: Disk Question

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

Wayne Stewart <waynes@intergate.bc.ca> wrote:

> savage300@webtv.net wrote:
> 
> > I have an apple//c that the built in disk drive doesn't seem to want to
> > read the disk when it's inserted. My question is, can I load a program
> > using my external disk drive and if so how do I go about doing this.
> > Also, is there a place to buy a new internal disk drive. Thanks for any
> > help,
> > Ray
> >
> If you leave the internal drive empty your IIc should check the internal
> drive then if it doesn't find a disk it'll boot off the external drive.

Not in any version of the IIc that I've seen or read about.

The original IIc firmware has limited support for booting off an
external 5.25" drive, but it is a manual operation, and only supports
ProDOS disks (as far as I know).

To check whether you have the original IIc firwmare, get into BASIC
(press Control-Reset if necessary), and type

PRINT PEEK(64447)

If the value printed is 0, 3, 4 or 5 then the machine does not support
this feature, and is only able to boot from the internal 5.25" drive, or
from an external UniDisk 3.5.  (The original firmware does not support
a UniDisk 3.5.)

If the value printed is 255 then you have the original fimrware and will
be able to boot from an external 5.25" drive by typing

PR#7

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand