Geoffrey Loeffler escribió:
Thank you for the information, the 6100, I have with a G3 card,
256 megs of RAM, the floppy drive is perfect, I will be at the
residence site of the 6100 in a few weeks, but it seems if I remember
right, it will not read anything earlier then when the 6100 came out
1995.
Well, there is absolutely no difference on the data written to a
diskette either by a PowerMac or by a 68k Mac. The 6100 even shares the
disk mechanics with most of the Quadra series. Other than a disk
failure, a PowerMac should be able to read a disk created by almost
every Mac, except possibly the 128 and the 512 (more on this bellow).
Could this be just the G3 card interfering, a Newer Tech 300 MHZ.
If it interferred with disk access, it would be an obstacle to read
*any* disk.
It seems on the occasions that I try to look at a old disk a 400k
it's and no go.
That's a horse of a different color. 400 Kb disks are *very* different
from 800 Kb/1.44 Mb ones - they are single sided, and use the old MFS
(Macintosh File System), which is completely incompatible with the later
HFS. The Macintosh 128k and the original 512k (NOT the 512ke) came with
a single-sided disk drive and the original 64 Kb ROM, and thus supported
only 400 kb disks in MFS format. On the other hand, I think single-sided
disk and MFS support was dropped in Mac OS 8.0, so no matter what
hardware you have, you won't be able to read 400 Kb disks directly with
it. So it seems that the two machines you have are plainly incompatible.
There are three solutions in this scenario. The easiest one is getting a
SuperDrive compact Mac (for example, a Classic) runing System 6, which
will happily copy the data from the old 400 Kb disks into 1.44 Mb,
HFS-formatted ones, readable by all versions of Mac OS (up to OS X). But
beware that, if you do this, you could be bitten by the Compact Bug and
end collecting dozens of these machines ;-) . The second solution is to
downgrade the PowerMac to OS 7.5 or 7.1 (the latter requires a system
enabler). Those versions of Mac OS can access 400 Kb disks without
problem. And the last one, the most challenging, is to connect the 512k
and the PowerMac via AppleTalk. It can be done, but I'm affraid you
would need somehow to transfer files from the PowerMac to the 512k, so
the problem being disk-related, this may be a bad idea...
I can turn off G3 card easily via software that came with it.
Although it is still in the PDS slot.
You can try it, but, as I said, I doubt it would be of any help.
On the 6100 I am running system 8.6. I know the I was on system 6 or
lower on the 512 1987-88 era. It's important info. Do not need to
run the program, just open to read. Plus I have so many disks oh, oh
so many...too look through.
Thank You
You're wellcome! :-)
Greetings,
Antonio Rodríguez (Grijan)
<ftp://grijan.cjb.net:21000/>
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