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1024b
n00b
Joined: 28 Nov 2003
Posts: 10
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 Posted: Fri Nov 28, 2003 7:46 pm Post subject: Kernel image too big? |
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I tried to recompile a kernel (2.4.20), i did this:
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make mrproper
make menuconfig
make dep
make bzImage
make modules
make modules_install
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The problem is that when i run lilo to install the new image it says that the image is too big... how can i fix this? |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 55347
Location: 56N 3W
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| Posted: Fri Nov 28, 2003 9:03 pm Post subject: |
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1024b,
You aren't going to like either of the answers.
1) Install grub
2) make more things as modules.
The problem happens because lilo needs some workspace in the bottom 640k of memory while it loads the kernel. You can build kernels so lilo runs of of memory to do the load.
When you build the kernel, only say 'Y' to things you need to boot with. Make everything else as a module.
Regards,
NeddySeagoon
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NeddySeagoon
Computer users fall into two groups:-
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1024b
n00b
Joined: 28 Nov 2003
Posts: 10
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| Posted: Fri Nov 28, 2003 9:22 pm Post subject: |
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| will modules slow down my pc? |
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NeddySeagoon
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Joined: 05 Jul 2003
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Location: 56N 3W
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| Posted: Fri Nov 28, 2003 9:42 pm Post subject: |
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1024b,
Only if you use them a lot and allow them to be unloaded and relaoded, then its a tiny amount.
You can force modules to load and stay loaded by listing them in /etc/modules.autolaod. Then they are loaded at boot time. That way you have the effect of a monolithic kernel
Think about filesystem drivers an an example. You don't need vfat or iso9660 unless you want to read a DOS disk or a CDROM. When you issue the mount command, the module will be loaded.
When you umount, it may be unloaded after a period of not being used.
You can overdo this too if you use ext3 for your root filesystem, you must build this in becuse the kernel needs to mount / to be able to read any modules at all.
Regards,
NeddySeagoon
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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1024b
n00b
Joined: 28 Nov 2003
Posts: 10
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| Posted: Sat Nov 29, 2003 12:58 am Post subject: |
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k solved (i installed grub  ) thanks for all the info  |
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The Mountain Man
l33t
Joined: 03 Sep 2003
Posts: 643
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| Posted: Sat Nov 29, 2003 4:31 pm Post subject: |
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I believe the "kernel too big" warning only applies if you're trying to make a bootable floppy. I always get that warning at compile time because I build a lot of stuff into my kernel but LILO has never had a problem booting my system.
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