[comp.sys.mac.system] Desktop Manager HD driver conflict?

scasterg@magnus.acs.ohio-state.edu (Stuart M Castergine) (04/04/91)

I've got a problem with Desktop Manager and certain Quantum 170 disks
we have that were bought from MacLand.

On all our other disks, Desktop Manager runs with no problem.

I first noticed the problem on one Mac that was running with one of
the MacLand Quantums and a GCC FX/80 (also Quantum mechanism).

Copying a file to the GCC form any source (floppy, other HD,
filserver, etc.) proceeds at a normal pace.

However, when you try to copy from any source to the MacLand Quantum,
the drive starts out OK then goes through this series of fast,
stuttering disk accesses. It does this several times throughout the
copy, which makes the copy take more than twice as long as the same
copy to the GCC.

But the problem goes away when you don't use DeskTop Manager!

Without DM, copies to the MacLand Quantum are marginally _faster_ than
copies to the GCC.

Went so far as to reformat the MacLand Quantum. It didn't help.

Then I tried the same thing on another MacLand Quantum 170 on another
Mac running Desktop Manager (a different copy of DM) and got the
_same_problem_.  I haven't gone and tried this with all of the MacLand
hard drives yet. Mostly because there are about seven of them and it
is boring. :-)

Since the problem only occurs on this brand of hard disk, and
formatting the disk doesn't help, I am beginning to suspect the
driver. These disks were formatted with the software MacLand included
with the drive, called Smart Format (which isn't all that smart).

Could a badly written driver be causing the problems I am
experiencing? Given the quality of the other software that was bundled
with the drive, I would not be surprised. Quick Flame: I don't have
any high praise for MacLand; they haven't been teriible, but they have
been unimpressive. I don't want to go on and on about it, but these
drives were bought from MacLand without my knowledge through a third
party consultant who later went out of business. They are unserialized
and I lack any way of proving to MacLand that I am deserving of their
rather lackluster support.

I've got a copy of SilverLining on order. Perhaps it will fix the
problem? I was going to get it anyway, since we have dozens of Macs
and I thought it was about time to get all of them running the same
driver software, just so I didn't have to go running around with
umpteen different HD management programs.  (What? It's a Dataframe? I
thought it was a Rodime. Oh, the Rodime's upstairs. What's the newest
version of Dataframe Manager? 4.1? You get the picture.)