Solved

Trouble performing BIOS flash via PXE.

Posted on 2006-07-19
10
976 Views
Last Modified: 2008-01-09
Hello all,

I have a need to be able to flash a BIOS via a PXE boot. My PXE boot image is a standard MS DOS 6.22 disk with the flash util and binary on it. I will apologize for the length but I thought being thorough would be best:

The PXE boot image is the same image that I use via floppy. If I boot the floppy image and perform the BIOS uprade it works fine. As soon as I use the image delivered via PXE the BIOS upgrade fails, wiping out the BIOS in the process.

When booting from the floppy and flashing the BIOS, the last 8 blocks never get overwritten (3FE000 and higher), stating that there is no update. This seems to be normal for the operation and the BIOS updates successfully to the newer version.
When performing the same process via PXE, it overwrites those last 8 blocks. After this happens the unit is unbootable and I am prompted by the Award BootBlock notice stating that there is a BIOS ROM Checksum error. This doesnt make any sense since I am using the identical image as the floppy.

I am using the award 823b flash utility (awfl823b.exe) which is suggested by the manufacturer of the motherboard (Via).
I believe the issue centers around memory management. Here are the contents of my config.sys and autoexec.bat files:

config.sys:
FILES=20
BUFFERS=10
DEVICE=a:\HIMEM.SYS /TESTMEM:OFF
DEVICE=a:\EMM386.EXE NOEMS
DOS=HIGH,UMB
shell=a:\command.com /E:512 /P
lastdrive=z

autoexec.bat:
@echo off
path=a:\
a:\awfl823b.exe i010010f.bin
prompt=$p$g

I understand that EMM386 is bad when performing BIOS flashes, but this is something that predates me at this company and it has worked successfully in the past.

Here is what I have tried:
1) removing the autoexec.bat and config.sys files - This would perform the BIOS upgrade but list 4 blocks as "write failed" and so it would not perform the update
2) removing EMM386 from config.sys - same results as #1
3) removing himem.sys and emm386 from congig.sys - same results as #1
4) I have tried flashing the BIOS with the switch that prevents writing the boot block. No change. If emm386 and himem are loaded it wipes out the BIOS, if not then it gives the same results as #1

I have to admit I am stumped. Any suggestions from you gurus out there that might have run into this? I am currently looking into a different DOS as well as a different flashing utility but so far I haven't met with any success (I haven't spent much time on it to be fair).

Any help would be appreciated.

Michael

0
Comment
Question by:mweyant_marlin
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
10 Comments
 

Author Comment

by:mweyant_marlin
ID: 17148429
I have since tried tried this process using PC DOS instead of MS DOS with the same results. Any thoughts?
0
 
LVL 32

Expert Comment

by:_
ID: 17151576
Other than using a "clean boot disk" (no autuexec, config, etc) which you tryed, I have no idea.

I had one that wouldn't Flash from the floppy, but if I booted from the floppy and changed to the HD and ran the flash from there, it worked flawlessly.  Ain't hardware fun...
0
 
LVL 88

Expert Comment

by:rindi
ID: 17152054
Have you tried different settings in the BIOS itself, like trying the flash using "failsafe" settings, or shutting off all the shadowing, maybe setting the "memory hole" option, disabling cache etc?
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:mweyant_marlin
ID: 17153347
I havent tried anything in the BIOS itself. I will look into the shadowing possibility.
0
 

Author Comment

by:mweyant_marlin
ID: 17184695
Well as a quick update I still have no idea what was causing this issue. I have circumvented this by unloading himem.sys and including ramdrive.sys. Once the ramdrive is loaded I copy the bios binary and flash utility to the ramdrive and run the update from there. This seemed to be a work around but I would love to know what the actual cause was..
0
 
LVL 32

Expert Comment

by:_
ID: 17190070
Glad you got it working.

As to what the problem is, I have no idea. I got tired of messing with mine, and just chalked it up to "one of those things". Maybe one of these days I will come across some info that will explain it.
0
 
LVL 32

Expert Comment

by:_
ID: 17323687
PAQ - Refund

Original question has No Known Answer, but he came up with an interesting work around.
0
 

Accepted Solution

by:
ee_ai_construct earned 0 total points
ID: 17382213
PAQ / Refund
ee ai construct, community support moderator
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Like many organizations, your foray into cloud computing may have started with an ancillary or security service, like email spam and virus protection. For some, the first or second step into the cloud was moving email off-premise. For others, a clou…
There are many software programs on offer that will claim to magically speed up your computer. The best advice I can give you is to avoid them like the plague, because they will often cause far more problems than they solve. Try some of these "do it…
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

724 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question