Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!samsung!mips!sjsca4!poffen
From: poffen@sj.ate.slb.com (Russ Poffenberger)
Newsgroups: comp.windows.ms
Subject: Re: 386 Enhanced mode + DOS5 SMARTDRV = problem
Message-ID: <1991Jun21.203521.21151@sj.ate.slb.com>
Date: 21 Jun 91 20:35:21 GMT
References: <1991Jun17.115544.11351@jet.uk> <4772@inews.intel.com>
Reply-To: poffen@SunOS (Russ Poffenberger)
Organization: Schlumberger Technologies, ATE division, San Jose, Ca.
Lines: 45

In article <4772@inews.intel.com> wwitt@adara.UUCP (Wolf Witt) writes:
>In article <1991Jun17.115544.11351@jet.uk> cm@jet.uk (colin manning) writes:
>>Installed DOS 5 the other day. Works OK, except that the new
>>smartdrv included with DOS 5 does not work on my system with
>>windows in 386 enhanced mode. As soon as you try to load an
>>application, the system dies. I am left with an hourglass cursor,
>>and no application. I can move the hourglass, so its not actually
>>crashed, just stuck somewhere.
>>
>>Changing back to the smartdrv included with windows, and things
>>then work correctly under DOS 5.
>>
>>Any ideas ?
>>
>>BTW drive is a SCSI on 1542b controller, not a normal IDE/MFM 
>>drive.
>
>In my machine I have both, an MFM disk hanging off a WD-1006 and a SCSI
>disk with an Adaptek 1542A (earlier version of the 1542B). After getting
>DOS 5, I switched to the new SmartDrive that came with it and everything
>still works fine. I also run Windows in 386 enhanced mode.
>
>Are you loading SmartDrive high? I have played around a bit and discovered
>that the SmartDrive that came with DOS 5 lets itself be loaded high, but
>then Windows doesn't start. I would get the opening screen, but then find
>myself back at the DOS prompt. If I load SmartDrive in conventional memory,
>everything is fine. Note that I'm using QEMM 5.11 and not DOS 5's built in
>features to load stuff into high RAM.
>
>Other people have apparently been successful running SmartDrive in high RAM
>with Windows. Perhaps there are some system dependent quirks of SmartDrive.
>Incidentally, the original version of SmartDrive that came with Windows
>would lock up my machine at boot time if I tried loading SmartDrive high.
>

In my experience with an AHA1542B, QEMM, disk cache loaded hi (qemm, hyperdisk)
DON'T DO IT. On my system, it completely trashes the FAT. I think you need
their (Adaptec) driver to do this. Loading the cache into low memory is OK. It
is also possible that large partitions are more seriously affected. I haven't
tried it with 32Mb ones (I have a 307Mb SCSI disk, partitioned as 287 and 20).

Russ Poffenberger               DOMAIN: poffen@sj.ate.slb.com
Schlumberger Technologies       UUCP:   {uunet,decwrl,amdahl}!sjsca4!poffen
1601 Technology Drive		CIS:	72401,276
San Jose, Ca. 95110             (408)437-5254