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I installed the Fedora3 in my Dell PC. when rebooting, the grub loader shows me two available selections. one is the Fedora(Version_Number)-smp. Another one is Fedora(Version_Number)-up. I comment the second one in the grub.conf file. but I want to know why Fedora has two boot images and If I can delete the either one.
-up stands for Uniprocessor, -smp stands for Symettric Multi Processing. If you have a multi-processor or SMT system (Pentium 4 HyperThreading), use the -smp kernel. If you have something other than a Pentium 4 with only a single CPU, use -up.
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