Henrik Boom:
> On Tue, Aug 16, 2016 at 10:05:12PM +0200, karl@??? wrote:
...
> > Next scenario is if you have the bootloader on a different media, say
> > e.g. a floppy. Then, will lilo load the kernel from disk 2 when disk 1
> > fails (assuming mirrored /boot) ? Do grub handle that ?
>
> I boot from a floppy.
> boot=/dev/fd0

Yes, I remembered that, so I choose floopy as an example hooping to
hear from your experience.

> And for root I specify
>
> root = "UUID=9ce657a4-6b9b-4aa3-8d46-8977164db98a"
>
> SO if one hard drive of my RAID1 fails it still recogizes the other.

Well, that is a kernel issue, not a bootloader one.

The question are (I think):

. if the usual boot disk gives read errors,
should the bootloader try the "next" disk

. should the bootloader in some way verify the kernel and try
"next" entry/disk if invalid

any more ?

> I use the older protocol for marking RAIDs that puts the RAID
> signature at the end of the partition instead of the start, so that
> LILO doesn't have to know about it.

I don't understand this. My understanding of lilo is that is just finds
the blocks where the kernel is, and usually the kernel file is not placed
in any superblock or signature; shouldn't the file system driver ensure
that ?

...
> Is there a way to tell lilo to boot from a hard disk with grub on it?
> Is there a way to tell grub to boot from a lilo installation?

Isn't that what the chainloader is for ?
Like when dualbooting MS-Windows and Linux.

Regards,
/Karl Hammar

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