Zenith 286 CMOS

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3 total messages Started by John DeRung Tue, 29 Sep 1992 19:52

#431

Author: John DeRung
Date: Tue, 29 Sep 1992 19:52

9 lines
871 bytes

   I have a problem I hope someone else has encountered.  We have two Zenith
286s, purchased sometime ago,  each has a hard drive and 5 1/4 drive.  Sometime 
in the past (before my time) a 3 1/2 drive was added to each.  Unfornately, the
CMOS only knows about 5 1/4" drive formats.  Thus, it treats these drives as 
either 360K or 1.2 MG drives.  Is there any way to get CMOS to understand 3 1/2"
drive formats?

Thanks in advance.  derungjj@cda.mrs.umn.edu

Re: Zenith 286 CMOS

#436

Author: Duane L. Rezac
Date: Wed, 30 Sep 1992 16:35

30 lines
1813 bytes

From article <BvCv75.9vv@cda.mrs.umn.edu>, by derungjj@cda.mrs.umn.edu (John DeRung):
> 
>    I have a problem I hope someone else has encountered.  We have two Zenith
> 286s, purchased sometime ago,  each has a hard drive and 5 1/4 drive.  Sometime 
> in the past (before my time) a 3 1/2 drive was added to each.  Unfornately, the
> CMOS only knows about 5 1/4" drive formats.  Thus, it treats these drives as 
> either 360K or 1.2 MG drives.  Is there any way to get CMOS to understand 3 1/2"
> drive formats?
> 
> Thanks in advance.  derungjj@cda.mrs.umn.edu

you could try the driver.sys and configure it as a 720K drive. In
order to get it to work as a 1.4m, you will have to replace the bios
chips (we had to for ~120 pc's). As a side note, the bios upgrade
will also let you use more different types of hard drives and a 101
key keyboard instead of the 84 key keyboard. 
(note: these pc's were the government Z-248 types, with a passive 
backplane board instead of a mother board)






Duane L. Rezac
-- 
+-----------------------+---------------------------------------------------+
| Duane L. Rezac |These views are my own, and NOT representitive of my place|
|    drezac@dcsc.dla.mil                                  of Employment.    |
+-----------------------+---------------------------------------------------+

Re: Zenith 286 CMOS

#438

Author: Robert L Springgay
Date: Thu, 01 Oct 1992 18:23

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1246 bytes

In article <BvCv75.9vv@cda.mrs.umn.edu> derungjj@cda.mrs.umn.edu (John DeRung) writes:
>
>   I have a problem I hope someone else has encountered.  We have two Zenith
>286s, purchased sometime ago,  each has a hard drive and 5 1/4 drive.  Sometime 
>in the past (before my time) a 3 1/2 drive was added to each.  Unfornately, the
>CMOS only knows about 5 1/4" drive formats.  Thus, it treats these drives as 
>either 360K or 1.2 MG drives.  Is there any way to get CMOS to understand 3 1/2"
>drive formats?
>
>Thanks in advance.  derungjj@cda.mrs.umn.edu
 The easist way to correct this problem is to update the system ROM.
 Alternately, you could use the disk driver program included in the
 Zenith MS-dos (tm) package.

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