Re: SCSI Partition question

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

In article <Cy5GFy.Bq3@actrix.gen.nz>,
David Empson <dempson@actrix.gen.nz> wrote:
> 
> I wasn't aware that there was a fixed limit.  ProDOS-8 cannot handle
> more than 14 block devices, so after counting any RAM disks (including
> the standard /RAM volume in auxiliary memory), 5.25" drives (2 per
> controller, even if you only have one drive), 3.5" drives, etc., the
> remaining number of available units should be the number of partitions
> you can have.
> 
> I think the ProDOS-8 2.0.x remapping of partitions to unused units
> will skip the second unit for a slot which has a single device (e.g. a
> SuperDrive controller with a single drive connected).  For some reason
> my second and third hard drives don't want to come online just now, so
> I can't check this.

I've now managed to test this, and I've succeeded in getting 8
partitions online at once (from three separate SCSI drives).  I could
get a ninth one, if I repartitioned one of my drives, but I don't
particularly want to do that.  :-)

I can also confirm that ProDOS-8 2.0.x will not use the "drive 2"
position in the unit mapping table when remapping SmartPort devices if
there is a genuine ProDOS block device in drive 1.  e.g. in my system
I have a PC Transporter with a single drive (/RAMAEPC) and a
SuperDrive card with a single drive (SuperDrive).  The drive 2 unit
for each of these slots is not used when remapping SmartPort devices.

Slot 3, drive 1 _is_ used (S3,D2 is /RAM), but only as a last resort.
The remapping gives preference to unused slots, starting at slot 1.