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From: Bela Lubkin <belal@sco.com>
Subject: Re: Hard Disk Performance


  IanC wrote:

  > Sorry Bela I could not get the WD Driver Supplement to load.

  [onto OSR502]

  > I downloaded it:-
  > 
  > -rw-rw-rw- 1 root sys 1024 May 19 15:02 VOL.000.000
  > -rw-rw-rw- 1 root sys 6656 May 19 15:02 VOL.000.001
  > -rw-rw-rw- 1 root sys 8192 May 19 15:02 VOL.000.002
  > -rw-rw-rw- 1 root sys 38400 May 19 15:02 VOL.000.003
  > -rw-rw-rw- 1 root sys 207360 May 19 15:02 VOL.000.004
  > -rw-rw-rw- 1 root sys 25600 May 19 15:02 VOL.000.005
   
   > When I follow the instructions and try to install it I get an error
   > message:-
   > This software patch cannot be loaded with the Install New or Load
   > )Software menu options. Please click on OK, then select Patch  Management
   > from the Software menu, and select Load Patch.
   > 
   > If I try to apply it as a patch I get a different error message:-
   > 
   > No components are eligible to be patched by SCO:wdpatch 1.1.0a
   > 
   > I guess I am doing something wrong?

   Only following my directions... I hadn't tried installing the supplement
   on OSR502, just the driver.  I now realize that the packaging of the "Wd
   Driver Supplement" is incompatible with OSR502.  It's incompatible on a
   level that would be difficult to fix in the field.

   Fortunately, the "wd Btld" contains exactly the same stuff, and
   shouldn't have this packaging problem.  I previously said:

   " ftp://ftp.sco.com/pub/openserver5/drivers/OSR507/btld/wdsupp/.  Do not
   " use the BTLD from ../wd; it won't work on OSR502.

   What I really meant was that it won't work as _at boot time_.  You
   should be able to install it at runtime: go to single-user mode, mount a
   floppy containing the BTLD on /mnt, and run:

     btldinstall /mnt

     It asks which BTLD; tell it "wd506".  This installs the
     OSR506-compatible version of the BTLD.  At that point your kernel will
     not be able to link until you patch /etc/conf/pack.d/wd/space.c with the
     swab() function I previously posted.

     Once again, I think this will work but I haven't tested it.  I have root
     access to an OSR502 machine, but it isn't "mine" and I shouldn't do
     drastic things like installing a BTLD.  I was able to test the kernel
     linking aspect because that can be done by just moving aside a couple of
     files temporarily.  If you test it, please let me know (1) if you got it
     to link in, (2) if it booted, (3) if you saw any performance change.

     >Bela<

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