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Basic System Administration

then you need only add the following section:

image=/vmlinuz.old

root=/dev/hda1

label=Old

read only

next, run lilo and the new kernel will be installed with access to the old kernel

as a fall back.

Debian kernels are often built with all the SCSI low level drivers built in.

This makes the uncompressed kernel greater than 1 Meg, requiring the use of

bzImage instead of zImage. bzImages can sometimes cause problems for

some hardware and for some loaders. loadlin has been known to have problems

with these kernel images in the past, although most of those difficulties have

already been fixed.

If loadlin is used as the boot loader, then none of the above actions will make

the new kernel available. You must copy the zImage file to the file that is

used on the DOS partition as the kernel image file. If you use loadlin to boot

the file linux from your DOS partition, then you must copy the new kernel

image into the file linux on the DOS partition. Also make sure that make

modules install has been run, and you are ready to reboot the new kernel.

If you boot from a floppy, then mount the floppy as a DOS disk, and copy the

kernel image file from /arc/i386/boot/zImage to the file linux on the floppy.

This is the kernel image file on the boot floppy and replacing it with the new

kernel image will allow the system to boot under the new kernel.