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Title: Adaptec 2940 with DOS and loadlin

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Adaptec 2940 with DOS and loadlin
Applicable to:
S.u.S.E. version: > 4.2
Kernel version: > 2.0.0
Symptom:
- You start Linux by loadlin either from DOS or from the DOS mode of
Win95. Kernel freezes during the booting process.
Or:
- You exit Linux and start DOS. While booting from DOS, the computer
freezes during the load of the driver aspi7dos.sys in config.sys.
Cause:
The 2940 are themselves "small computers". They can be programmed
and they possibly confirm a warm/cold start
registered value too. This is why e.g. Linux performs automatically a
controller reset at
booting-time, to set up again any already set values.
This works, but possibly it is not always reliable.
Solution:
- When the error appears under DOS, you can order the controller to
reset the aspi7dos.sys driver. For doing so you must only pass
the parameter /rst to config.sys.
- When the error happens while starting with loadlin, please pass
the kernel parameter
aic7xxx=no_reset
However we advise not to do so, because then the controller is possibly
not
correctly initialized anymore.
In most of the cases this is avoided, because either
- a coldstart is done or
- the computer is switched off.
If necessary you should renounce to the Linux start from DOS.
During LILO's use, these errors do not appear in general.

Keywords: 2940, ADAPTEC, SCSI, DOS, LOADLIN

Feedback welcome: Send Mail to maddin@suse.de (Please give the following subject: SDB-maddin_aha2940
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SDB-maddin_aha2940, Copyright SuSE GmbH, Nuremberg, Germany
- Version: 16. Oct 1996
Impressum - Last generated: 24. Feb 1999 15:01:00
by maddin
with sdb_gen 1.00.0