[rescue] Help: Recovering from a fubar IRIX kernel tuning.

[Jonathan C Patschke]

On Saturday, November 9, 2002, at 07:11 AM, Tim Chong wrote:

> Sorry to trouble you all but I think I have screwed up big time on my 
> Indy while doing some kernel tuning.

Does the system boot at all?  What's gone wrong since you started 
tuning?

> Now the problem is I somehow DID NOT make a backup of the /unix file 
> before the reboot. Is there a way to recover from the mishap short 
> from a total reinstall? IRIX 6.5.17m

Something you could try is booting into miniroot from the installation 
CD, and copying the /unix file from there onto your root slice.  Then, 
once the system is booting on its own, back up /var/sysgen/stune.  Edit 
/var/sysgen/stune to delete everything that -isn't- commented-out, and 
regenerate the kernel with "/etc/autoconfig -f".  Unless you've 
modified files in /var/sysgen/master.d by hand, this should give you 
the default IP24 kernel.

Once your running normally again, you can use your backup of 
/var/sysgen/stune to figure out where things went wrong.

--
Jonathan C. Patschke
Celestrion Information Systems
Thorndale, TX