Centos 4 kernel's base version is 2.6.9 and Centos 5 kernel's base version is 2.6.18. and I couldn't find anything in Centos mirror sites and repository ( I really need kernel version 2.6.18. ) Downloaded and installed kernel 2.16.18 for version 5, and installed it on Centos 4, it is ok but while I am installing another software I am getting pointer exception fault. couldn't compile 2.6.18 SROM on Centos 4, I am getting "unifdef is needed" when I am running rpmbuild -bb kernel-2.6.18 now I guess I have only two choices: 1- upgrading Centos 4 to Centos 5, which I need your opinion for the best way of accomplishing it, considering my server is in remote location and I don't have access to console. ( is kick start works for remote installation with not access to console ? ) 2- Downloading kernel from kernel.org, which I want to know if the same version in kernel.org is identical to same version in Centos repository. I want to make sure I will have the same thing, to prevent weird problem in future. Thanks Barry Brimer wrote: >> my server is in remote location, and I don't see any grub screen, so >> I was wondering >> if there is an option that I can specify the kernel that Linux to be >> booted at the reboot time, >> some thing like shutdown -g0 -i6 which_kernel-options > > This is handled by your bootloader, which is grub. In your > /etc/grub.conf file, there is a line that says "default=x" where x is > the number of the section from the top of the file, starting with 0. > You can also use the "fallback=x" statement to boot a different kernel > in case the default kernel is unable to boot. > > If you really want to be able to specify which kernel will be booted > on the next boot (and only the next boot) you can install the lilo > boot loader and use "lilo -R <image title>" and the next time the > system is booted, it will use that kernel, but all other times it will > use the default kernel. If you are not familiar with lilo, I strongly > recommend that you install it on a machine locally and use it there > until you are comfortable with it before deploying it to a machine at > a remote data center. > > Hope this helps, > Barry > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >