Greetings, First, please CC me in replies, as I'm not subscribed... I have an ABIT BP6 dual-Celeron system, with six IDE drives, four on the PIIX4 controller and two on the HPT366. For some reason, Debian kernel-image-2.4.14-686-smp and 2.4.16 can never see anything on hdb or hdc, but have no trouble at all with hda, hdd, hdf or hdg. It's as if I removed those two drives. The corresponding Debian 2.4.9 kernel package always works perfectly, as does 2.2.19 and various other 2.2 and 2.4 kernels leading up to those. I originally thought it was an ext2 problem because fsck couldn't mount hdb1 or hdc1, and that's where the boot process would stop. The Debian slink install made hda1 (root) without sparse superblocks, and hdb1 (/usr) and hdc1 (/var) with sparse superblocks, making that the suspect. But then tune2fs wasn't finding the partitions either, and raidstart was finding hda3 and hdd1 but not hdb3 or hdc3 (which are 10 GB each making up a 30 GB RAID5 array), and also could find hda2 but not hdb2 or hdc2 (for a RAID0 array). It was finding hdf1 and hdg1 just fine for another RAID0 array. So it's as if hdb and hdc are not there! For more info on those drives, I've attached the relevant boot log portion from /var/log/messages under 2.4.9. Since the missing drives are identical to hda, which works just fine, I'm mystified... I would much appreciate any insights/solutions, and am happy to provide additional information toward that end. Thanks, -- -Adam P. GPG fingerprint: D54D 1AEE B11C CE9B A02B C5DD 526F 01E8 564E E4B6 Welcome to the best software in the world today cafe!