Hi,
I have s sony laptop (Vaio VGN-SZ2M/B)which has coreduo proccesor...
After installing SLC 4.3 i coulndt boot linux and it gave me this error;
Booting ‘scientific linux cern (2.6.9-34.EL.cernsmp)’

Root (hd0,5)
Filesystem type is ext2fs, partition type 0x83
Kernel /vmlinuz-2.6.9.34.ELCernsmp ro root=LABEL=/ rhgb quiet
[linux-bzimage, setup=0x1400, size=0x17af81]
Initrd /initrd-2.6.9.34.Elcernsmp.img
[linux-initrd @ 0x37f79000, 0x76ea9 bytes]

Uncompressing linux... Ok, booting the kernel.
Kdb_cmd[0] : defcmd archkdb “” “Firsrt line archdebugging”
Kdb_cmd[6] : defcmd archkdbcpu “” “archkdb with only tasks on cpus”
Kdb_cmd[12] : defcmd archkdbshort “” “archkdb with less detailed backtrace”
Kdb_cmd[18] : defcmd archkdbcommon “” “common arc debugging”
Unknown bus type 2
Unknown bus type 2
Unknown bus type 2
Unknown bus type 2
Unknown bus type 2
Unknown bus type 2
Unknown bus type 2
Unknown bus type 2
Red Hat nash version 4.2.1.6 starting

Thanks for your advice
ercan

Have you solved this yet? Is this laptop a very recent model?
"Unknown bus type". Does that refer to a lack of support in the kernel and it cannot continue to boot because the hardware initialization is critical at that point? Just guessing.
You probably have a specific use for SLC - however using a distribution with a more recent kernel may help you determine whether support is available for the hardware and then take it from there.
Maybe someone with more experience can find a way around your problem without resorting to the above, as it is time consuming.

Is the SLC based on Red Had Enterprise Linux? Try booting with the latest Knoppix LiveCD or LiveDVD (http://www.knopper.net/knoppix/index-en.html) and see if it works. If it does, then it's probably a kernel problem. The 2.6.9 kernel is a bit old for state-of-the-art Core Duo 2 processors and motherboards.

sorry for replying late..was in a vacation..

well, first it is a new laptop.. still didnt understand.. when i remark cernsmp, seems to be ok.

#title Scientific Linux CERN (2.6.9-34.EL.cernsmp)
# root (hd0,5)
# kernel /vmlinuz-2.6.9-34.EL.cernsmp ro root=LABEL=/ rhgb quiet
# initrd /initrd-2.6.9-34.EL.cernsmp.img
title Scientific Linux CERN-up (2.6.9-34.EL.cern)
root (hd0,5)
kernel /vmlinuz-2.6.9-34.EL.cern ro root=LABEL=/ rhgb quiet
initrd /initrd-2.6.9-34.EL.cern.img

what could be the problem?

As basileus suggested, your laptop is too new for an older kernel like 2.6.9. As suggested, burn a live CD such as knoppix and see if it boots ok. That is very good advice. I would also follow the links provided.

but,
would it be ok to install Scientific Linux Cern 4.4 into my machine?
or it installs Knoppix?
i havent tried any liveCD yet..only used iso images and burned them..