[comp.sys.ibm.ps2.hardware] DASDDRVR.SYS

U39648@uicvm.uic.edu (Darius Vaskelis) (06/21/91)

>As far as I am aware, there is one DASDDRVR.SYS for *all* PS/2s except the
>Model 30; it installs the bits needed for the appropriate system and BIOS
>revision. The Model 30 one is different (the machine itself is substantially
>different, e.g. it isn't MCA).

Two points:

1. DASDDRVR.SYS was once recommended for *ALL* PS/2s, but now with all
   new models (35 SX, 40 SX, L40 SX, 57 SX, 90 XP 486, 95 XP 486, etc.)
   it no longer is a "general" PS/2 with DOS fix.  However, you are
   correct in that there's no harm in installing it anyway, since it only
   will take up memory if there is something to fix.

   Also, if IBM finds BIOS problems in these newer models in the future,
   I think it's a safe bet that the fixes will be incorporated in a newer
   DASDDRVR.SYS.

2. DASDDRVR.SYS will in fact help out a PS/2 Model 30.  I believe without
   it, they initially had all sorts of floppy problems, especially
   formatting them on DOS 3.3.

   DASDDRVR.SYS should be used on all older PS/2 models that run DOS.
   It doesn't do anything good for a 95 XP 486 for example, but nor does
   it do anything bad.

- Darius
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