Topic: kernel panic on update to 5.6

[Brian Read]

Just tried to upgrade my production 5.5 system to 5.6, but the 5.6 CD gives me a kernel panic just after compnaing it can't read the EXT2FS superblock (and something about bread failing?).  It never gets to the SME install screens at all.

It is a Pc chips 810 mb, with an Duron 800 CPU, and 40Gb maxtor HD.

This machine has run 5.5 sucessfully for over a year, and I have used the same CD to upgrade a least one other 5.5 system sucessfully.

Any ideas anyone?

Cheers

Brian

[Per Sørensen]

Is your CD drive ok?

Per

[Brian Read]

Per

I think so, how can I check it?  I used it around 3 months ago to do a fresh install of 5.5.

Cheers

Brian

[Per Sørensen]

I would for a start try another media for the ISO, if no luck, then i would try another drive. If still no luck then consider other hardware issues like:

Is the system running too hot.
Is the memory faulty.

And just for good luck, try to check the md5sum on the ISO file before you burn another CD. Even though you upgraded other servers, you may have been (un)lucky that the first CD made it through the upgrade. Even if the ISO is bad.

That's how i would do at least

Per

[Brian Read]

Per

ok checked the md5sum, and re-blown the CD (at 1x!), also tried this CD on another system (it worked), and also tried the CD Reader from the system that worked on the production system.  Still the same error.

I finally took the ghost HD, and installed it on the the other system, and the upgrade went through ok (except see new thread on DNS problem).

So I am making progress, but no further forward on the problem with my production  system.

Cheers

Brian

[Per Sørensen]

This one here will check your memory: http://www.memtest86.com/#download0

Per

[Brian Read]

Per

ok, run the memory test (thanks), worked fine (no errors).

I'll have to do the upgrade on the other machine and then move the HD back.  What a pain!

Cheers

Brian