From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031114 Description of problem: When installing a linus kernel, 'make install' runs /sbin/installkernel which then runs /sbin/new-kernel-pkg /sbin/new-kernel-pkg should check that the .config for the current kernel contains CONFIG_BLK_DEV_INITRD=y and that CONFIG_BLK_DEV_RAM_SIZE is set to be >= the size of the uncompressed initrd that mkinitrd creates. Version-Release number of selected component (if applicable): mkinitrd-3.5.14-1 How reproducible: Always Steps to Reproduce: 1. install a linus kernel from kernel.org 2. use the default ram disk size 3. reboot Additional info: There are a lot of hits on this topic if you google for "VFS: Cannot open root device "LABEL=/" or unknown-block(0,0)", but not too many correct answers. It would be nice if Fedora told people not intimate with kernel configuration that they had made a mistake.
With 2.6 kernels and mkinitrd 4.x, we'll instead create an initramfs which doesn't have this requirement.