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Old 10-10-2003, 06:20 PM   #1
LooseCanon
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large RAM support in Slack 9.1?


Hi

I've recently upgraded my system and now have 1.5 GB RAM. Does Slack 9.1 have large RAM amount support "out of the box" or will I have to re-compile the kernel? (if so, how would I do that?)

So far only RH9 saw all the RAM and made use of it - other distros would either stall at installation or just not accept the RAM in excess of 880MB. Right now I'm running RH9 but I want to run something leaner and meaner - maybe eventually run FreeBSD on the same machine.

Thanks!
 
Old 10-10-2003, 07:28 PM   #2
trickykid
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AFAIK it should support up to 2GB I think out of the box per se... if not, that's just a simple recompile afterwards.
 
Old 10-10-2003, 08:26 PM   #3
LooseCanon
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Is this choice to limit the large amounts of RAM based on some practical purpose (smaller kernel..)? If not why wouldn't large RAM amount support be included in the distro kernels? Seems rather strange to me that considering growth in the computer industry and server capabilities/requirements that distro makers wouldn't "up the ante" so to speak and include large RAM support.


btw any pointers on what I should be looking for when recompiling the kernel? I've never done anything to touch a kernel and I'm kinda terrified to bust something - last thing I want is to hear a "snap-crackle-pop" and smell some noxious fumes of fried electronics... and so would be the end of my "precious".
 
Old 10-10-2003, 09:03 PM   #4
pesho_p
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1. Copy linux-2.4.20.tar.bz2 (from the 2-nd CD or download it from here) to /usr/src.
2. tar jxvf linux-2.4.20.tar.bz2.
3. ln -sf linux-2.4.20 linux.
4. cd linux.
5. cp /boot/config .config.
6. make menuconfig ('make oldconfig' first if you decide to compile, say, 2.4.22 instead of 2.4.20).
7. Search (and enable) for large RAM support. Exit and save.
8. make dep && make clean && make bzImage.
9. On this stage you can save your current modules (in case something goes wrong). Or just gave different EXTRAVERSION to your new kernel in Makefile (/usr/src/linux).
10. make modules && make modules_install.
11. cp arch/i386/boot/bzImage /boot/vmlinuz-large_ram_support.
12. cp System.map /boot/System.map-large_ram_support.
13. cp .config /boot/config-large_ram_support.
14. ln -sf /boot/System.map-large_ram_support /boot/System.map.
15. ln -sf c/boot/config-large_ram_support /boot/config.
16. Edit /etc/lilo.conf to include your new kernel (if everything works with your new kernel you always can remove your current one afterwards):
Code:
boot=/dev/hda1
prompt
timeout=50
change-rules
  reset
vga=normal
default=Linux_LRS
image=/boot/vmlinuz 
  root=/dev/hda1
  label=Linux
  read-only
image=/boot/vmlinuz-large_ram_support
  root=/dev/hda1
  label=Linux_LRS
  read-only
17. lilo.
18. shutdown -r now (and pray ).
 
Old 10-10-2003, 10:36 PM   #5
LooseCanon
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(talk about a pointer or two)

WoW! thanks mucho pesho_p!!!
 
  


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