Avatar of dave2015
dave2015
 asked on

error loading SCO unix 5.0.5 in new install

I am getting an error trying to load SCO Unix 5.0.5 on a new hard drive
The error is  "addcore: configuration problem - memory segment 260424 - 256/s/n overlaps Segment 262080k-2156m/p  memory error loading kernel FD964)unix.text"
I get the same error using my boot floppy or CD.
can anybody help?
Thank you
Unix OSInstallation

Avatar of undefined
Last Comment
dave2015

8/22/2022 - Mon
mikelfritz

Put Bios in safe mode.

Also, It sounds like maybe your disk is too big for 5.0.5 to deal with.

http://www.tek-tips.com/viewthread.cfm?qid=719546

You can put in boot parameters to specify the disk size, but there is a limit.

There is also the possibility that the install is looking at the MBR for clues.

http://lists.celestial.com/pipermail/sco-misc/2004-March/000511.html

This option should be fine since it's a "blank" drive - some of these are not really blank though.
mikelfritz

Also - what hardware?  If it's too modern I doubt it will ever work with 5.0.5.
dave2015

ASKER
The hardware is about 15 years old working currently with SCO 5.0.5 but our hard drive is giving badblock errors. so we bought another 4GB scsi hard drive to replace current drive.
I am now getting errors "invalid partion" on boot up of floppy or cd Is that referring to the new hard drive?
Your help has saved me hundreds of hours of internet surfing.
fblack61
gheist

Looks like your SCO kernel (or boot driver) is limited to 256MB of RAM
mikelfritz

mikelfritz

after loading you would need:

SLS oss610b: E820 Memory Sizing Boot Patch

http://www.sco.com/support/ftplists/osr5list.html
⚡ FREE TRIAL OFFER
Try out a week of full access for free.
Find out why thousands trust the EE community with their toughest problems.
dave2015

ASKER
Sorry for the Delay in replying. The original computer just died and we replaced it with a Dell GX1 my old hard drive boots fine minus a few bad blocks. We are trying to replace the hard drive with the same Specs also 4gb We downloaded the driver from the internet for the SCSi card 2940uw we get as far entering our license number and code no error message but it dies at that point. starts to load and says please wait.
gheist

I can only suggest contacting xinuos.
mikelfritz

Have you tried at the boot prompt:

defbootstr mem=0k-639k,1m-64960k
Experts Exchange has (a) saved my job multiple times, (b) saved me hours, days, and even weeks of work, and often (c) makes me look like a superhero! This place is MAGIC!
Walt Forbes
gheist

(and setting date back to before Y2K)
dave2015

ASKER
What does setting the date back do? I think we tried both way with the date in the Bios
I didn't try "defbootstr mem=0k-639k,1m-64960k ".
Does having a dos partition of 4gb on the drive have anything to do with my problem with the OS not loading.
I will not be able to try or do anything for at least another week.
mikelfritz

That bootstring is to get past the known memory issue.  Setting the date back can help with other issues but should not be needed.

After a good load you'd apply this to fix it for good:
http://www.sco.com/support/ftplists/osr5list.html
⚡ FREE TRIAL OFFER
Try out a week of full access for free.
Find out why thousands trust the EE community with their toughest problems.
ASKER CERTIFIED SOLUTION
mikelfritz

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
dave2015

ASKER
Took off the Dos partition and then it loaded with no problem