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From: newton@cit-vax.Caltech.Edu (Mike Newton)
Newsgroups: comp.sys.mac
Subject: Easy Drive Config, MacII, missing disk
Message-ID: <3319@cit-vax.Caltech.Edu>
Date: Fri, 24-Jul-87 03:16:18 EDT
Article-I.D.: cit-vax.3319
Posted: Fri Jul 24 03:16:18 1987
Date-Received: Sat, 25-Jul-87 12:00:36 EDT
Reply-To: newton@cit-vax.UUCP (Mike Newton)
Distribution: world
Organization: California Institute of Technology
Lines: 38


I recently bought a Easy Drive 30 and have some comments and hints for
other users of this drive (and possibly other drives as well).

First, a couple of days after installing it I had the same problem that
grayson@cartan.Berkeley.EDU.UUCP (Matthew Grayson) had --- the drive just
would not show up on booting.  His suggestion (made for the Dataframe series
of drives also solved my problem:
	Hit SHIFT-OPTION-COMMAND and select the Control Panel.
	Then answer Yes to the clear PRAM message.

Next a comment on the Easy Drive timings:  on the suggestion of Tim Smith,
I formatted the drives with various interleaves and ran disktimer2 on 
the various formattings:  (all are with MacII, 1 meg Ram, NEC Color monitor)
	Interleave	Read	Write	Seek
	   1:1		 44	 458	 31
	   1:2		 77	 455	 31
	   1:3		109	 116	 31
	   1:4		142	 146	 31  
Note that the drive came configured at 1:4 (the manual only mentions the
MacPlus, so this is probably the best setup for this machine).  I 
eventually decided on 1:3, though gave serious thoughts of having very 
fast reads for the slow writes.  On real data 1:1 might actually be
better.  Does anyone have any comments on this?


Finally, a comment on Mac software and the Mac 2 -- a lot of programs that
I have tried would bomb.  However, If I would go to the control panel and
reconfigure to 'B&W' and '2 grey scale'  (rather than color and 256) many
of them started working.

- mike

newton@csvax.caltech.edu	{ucbvax!cithep,amdahl}!cit-vax!newton
Caltech 256-80			818-356-6771 (afternoons,nights)
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