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It's my first time compiling a Linux kernel. Everything went well until I hit this problem. After I edit my /etc/fstab:

/etc/fstab screenshot

and edit etc/lilo.conf:

/etc/lilo.conf screenshot

I want to set the info about crux in lilo, so I run lilo and the system prompt:

lilo screenshot

Then I run:

modprobe dm-mode

Things seem fine, but when I reboot the OS I get:

boot screenshot

I have no idea how to fix the problem; the next time I use the ISO to reboot, I get the same problem:

boot screenshot

Update

I set the root read-write in the lilo.conf, it seems that I can login, but the system still prompts that the / item is not found in the fstab. But I have already set it. And here is the prompt:

enter image description here

And what's more, when I reboot it, I can already login to the OS, but it still prompts the same error. And, when I open the /etc/fstab, I can find the / item in it. So, I wonder if I should notice the system about the change in the /etc/fstab -- but after long time searching the Internet, I found nothing about it.

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Why did you mount your root read-only? –  sarnold Nov 11 '11 at 3:44
    
read-only is just default set –  kaiwii ho Nov 11 '11 at 3:45
    
i donn't know yet,maybe i choose some unrelated tags,but someone can help me about this problem yet? –  kaiwii ho Nov 11 '11 at 3:48
    
i set the root read-write in the lilo.conf,it seems that i can login,but the system stiil prompt that the / item is not found in the fstab.But,anyway,i have set it before.someone can give me a hand?! –  kaiwii ho Nov 11 '11 at 8:59
    
Can you take another screenshot of the error message about / not in fstab? –  sarnold Nov 11 '11 at 9:20
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migrated from stackoverflow.com Nov 11 '11 at 3:55

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2 Answers

I think I fixed it. I noticed when editing /etc/fstab in vim that one of the lines was red. I'm not very familiar with vim, but I think it was indicating some kind of mistake, so I rewrote the line:

vim screenshot

Now when I boot it works:

Screenshot of a successful boot

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Do yourself a favor and switch to grub2; lilo is woefully outdated and hasn't seen a stable release in nearly 4 years. Even grub-legacy (grub-0.97) is better than lilo. –  laebshade Nov 14 '11 at 2:22
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Mostly over my head, but I noticed one small thing not related to your immediate problem.

/boot (on its own partition) is normally created as ext2 - not ext3 because it does not require any journaling - it's almost completely static and because it needs a tiny amount of disk space (somewhere around 100MB IIRC). The minimum size for an ext3 partition is larger than /boot needs and ext2 will do it. All that /boot normally holds is your kernel image and boot loader files like those needed by grub and probably lilo.

Changing this will free up a tiny amount of disk space for another partition to use, but shouldn't otherwise affect anything.

Some people recommend making /boot as large as 500MB, but that's probably overkill. YMMV.

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Good advice on ext2 for /boot -- and 500 megs does seem a bit big, I've got nine currently installed kernels and 175 megs used. (Time to prune, I guess.) –  sarnold Dec 23 '11 at 23:44
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