Re: printk, klogd

Marek Michalkiewicz (
Thu, 29 Jun 1995 14:38:25 +0200 (MET DST)

Albert Cahalan:
> Stop the interrupts and write directly to video memory, all printer
> ports, all serial ports, and the first sector in the floppy drive.
> You can then send the oops message (not all the numbers) out the PC
> speaker via morse code. If you can return to real mode or CRC check
> the disk drivers, write to the diagnostic cylinder of the hard drive.

I heard that some other systems actually do a crash dump to swap space.
This might be useful, but of course we should be sure that we are writing
in the right place... Maybe just check for swap-space signature first?
A full memory dump might be very helpful in tracking down some problems.