bootdisk

blackcat · 09-04-2002, 12:44 PM

I made a bootdisk with the following command:

dd if=/boot/vmlinuz-2.4.18-3 of=/dev/fd0 bs=8173

it did not boot. What's wrong?

hanzerik · 09-04-2002, 01:23 PM

What didnt boot? LFS or the bootdisk?

How big is your kernel?

blackcat · 09-04-2002, 02:27 PM

Of course, the bootdisk did not boot LFS. The kernel is about 1mb so, it shouldn't be a problem.

hanzerik · 09-04-2002, 02:44 PM

Ah, after you dd'd the kernel to the boot disk, did you use rdev to tell the kernel where the root filesystem is?

rdev /dev/fd0 /dev/hda1 # Instead of /dev/hda1, please specify your root partition of you LFS install

Dont know if you need to do this one:
rdev -R /dev/fd0 1 # mount root file system readonly
or
rdev -R /dev/fdo 0 # mount root file system as read/write

blackcat · 09-04-2002, 07:02 PM

It didn't work.

1. Something to do pehaps with the mehod of building the system( from the base distro). For example, when I did "df -m" I always got /dev/Root instead of /dev/hda10 as in the /etc/fstab. Also, the boot directory has two kernel, one is vmlinuz-2/4/18-3 and lfskernel. Somehow, the later has been the one that the system used. I haven't been able to change the name.

2. The synchronization of the two lilos( base distro's and lfs' own ) had a bad effect since when I /sbin/lilo in the lfs system, it also affect the base distro to the point rendering it unbootable. So, I reinstalled them both SEPARATELY.

hanzerik · 09-04-2002, 07:10 PM

So "rdev /dev/fd0 /dev/hda10" didnt work?

so you've done this so far:
dd if=/boot/lfskernel of=/dev/fd0
rdev /dev/fd0 /dev/hda10

You built your LFS on hda10?

where did /dev/Root come from?

blackcat · 09-04-2002, 08:08 PM

>where did /dev/Root come from?

hehe. I asked myself the same question. The fact is the /dev/Root is always listed in the /proc/mounts of any linux system I know, but it never appeared when I ran the df -m , except now.

>You built your LFS on hda10?

yes, /dev/hda10 is the root partition and hda11 is the /home.

hanzerik · 09-04-2002, 08:49 PM

I'm out of ideas, can you boot it using lilo?

What type of errors are you getting if any? Kernel Panic: cannot mount root filesystem?

blackcat · 09-04-2002, 10:52 PM

>What type of errors are you getting if any? Kernel Panic: cannot mount root filesystem?

No. I can boot it many ways, either grub or sbm and VERY easily. If you read my post carefully, I didn't say I had problem booting it.

But the bootdisk with the kernel in it didn't boot well is quite curious.