partitioning & 1024 cylinder limit

Ken Moffat ken at kenmoffat.uklinux.net
Sun Mar 10 09:12:35 PST 2002


On Sun, 10 Mar 2002, Dennis wrote:

> How does one determine how much disk the BIOS can see? 
> 
AFAIK you can only find out when you are rebooting - hit `del' or whatever
key *your* bios uses to get into the screens where you can see what drives
are connected - this will tell you how big it thinks the drive is.

If the bios thinks a drive is e.g. 8Gb but it's actually bigger, and the
boot files are in a partition that spans the boundary, then sooner or
later you will have problems if you use `lilo' and compile new kernels :
as long as the boot files happen to be below the boundary, all is well.

Of course, if you have a separate /boot partition where the bios can see
all of it, _or_ if the bios can see the whole drive, all is well. I
believe that `grub' handles this situation ok, too.

Ken

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