Why won't my Linux install boot?

Question

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

and edit etc/lilo.conf:

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

Then I run:

modprobe dm-mode

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

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

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:

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.

Answer 1

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:

Now when I boot it works:

Answer 2

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.