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I have a Jaz drive (via SCSI) on my system. It's worked fine under Red Hat 6.1. I upgraded to 6.2 (from the Red Hat official CD-ROM) and it worked fine. Then I upgraded my kernel to the latest from the website, 2.2.14-12. Now I get these errors as I boot (the first two aren't errors): VFS: mounted root (ext2 filesystem). Loading advansys module /lib/advansys.o: unresolved symbol scsi_register_Rb13032eb /lib/advansys.o: unresolved symbol best_memcpy_Ra0b82c11 /lib/advansys.o: unresolved symbol scsi_unregister_R84f2a037 /lib/advansys.o: unresolved symbol proc_print_scsidevice_Rbcfeb0c9 /lib/advansys.o: unresolved symbol best_memset_R3e04c7a1 Then, later, Kudzu says that "Iomega jaz 1GB" has been removed from my system. And, if I try to mount the drive anyway (from a shell prompt), I get: # mount /mnt/jaz mount: the kernel does not recognize /dev/jaz as a block device. Tech support suggested I submit a bug report. I can still boot from my old kernel 2.2.14-5.0 (which I saved, luckily).
You need to remake your initrd image after upgrading your kernel and then rerun lilo (these are documented kernel upgrade procedures). Your module won't load because you are trying to load the module from 2.2.14-5.0 in the 2.2.14-12 kernel.
I have this same problem with Red Hat 7.0. I remade my initrd kernel image, and it did not help at all. I see similar errors when I boot (scsi_unregister_..., proc_print_scsidevice_..., and scsi_register_... are unresolved). Unfortunately, these message do not appear in the boot log, and it took several reboots to transcribe the information. Although the advansys module fails to load during boot, I can load it later with modprobe, and then mount will work. As far as I am concerned, this bug is still open.
My mistake! I thought my lilo.conf referenced kernel images consistently, but actually it was not. I remade my initrd image, corrected lilo.conf, and then everything worked smoothly. I am embarrassed. Can I remove my name from this bug? Hopefully this information will be cleaned out in a few months....