I've installed Debian Squeeze on my server several days ago. During install process installer asked me to provide USB flash drive with firmware aic94xx-seq.fw. All went fine. Today I installed all updates to my system with "U" in aptitude. Aptitude installed kernel update 2.6.32-5 and created initrd accordingly. But now I can't boot up my system because it can't find LVM volumes on harddrive connected to Adaptec RAID card. How can I boot my system now? I have USB with firmware. I have netboot CD. Unfortunately when I tried to edit boot records in grub I found that there is no my old kernel anymore. The only kernel grub sees is the new vmlinuz kernel and new initrd How take make my server alive?

I believe your kernel should still be there. I don't typically work with LVM, but typically you should be able to get to a grub command prompt and then find your old kernel and boot it manually. Try following this.

Nop
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