How do I get into BIOS of old Dell system?

[Jeremy Baker]

I know that on Optiplex P166s, the key combo was ctrl+alt+enter anytime 
the machine was running.

Jeremy Baker

Fraser Campbell wrote:

>Hi,
>
>Migrated my firewall from P166 to 486-66, had an interesting problem during 
>bootup.
>
>Following the message "Freeing unused kernel memory: 64k" (perhaps not exact) 
>the kernel paniced with the message "unable to handle kernel paging request" 
>(again possibly not exact quote).
>
>I tried passing the kernel a few parameters at boot time and found that by 
>passing mem=15000k the system is able to boot just fine.  The system has 16MB 
>of total memory.  While that is ok and I have the system booting just fine 
>now 15MB leaves things running *very* tight, that extra 1MB could be pretty 
>useful.
>
>The only thing that I can think of is that some machines have a "memory hole" 
>option in the BIOS that occurs between 15 and 16 MB, I wonder if mine has 
>that?  Problem is I cannot get into the BIOS, I've tried numerous function 
>keys, escape and delete.  It's an optiplex 486/66.  Any ideas how to get into 
>the BIOS, or what else might be causing the issue?
>
>Thanks!
>  
>


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