I have an Adaptec adapter with an internal CDRW and IOMEGA Zip on the external 68-pin connector. On bootup my kernel seems to "see" the devices but does not report back mountable points (ie sda, sdb4). I have appended the relevant dmesg section, thanks for your time.
[clip] hda: QUANTUM FIREBALL ST2.1A, 2014MB w/81kB Cache, CHS=1023/64/63, DMA hdb: , ATAPI CDROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 aic7xxx: Warning - detected auto-termination on controller: aic7xxx: <Adaptec AHA-294X Ultra SCSI host adapter> at PCI 9/0 aic7xxx: Please verify driver detected settings are correct. aic7xxx: If not, then please properly set the device termination aic7xxx: in the Adaptec SCSI BIOS by hitting CTRL-A when prompted aic7xxx: during machine bootup. aic7xxx: Cables present (Int-50 YES, Int-68 NO, Ext-68 NO) aic7xxx: Termination (Low ON, High ON) (scsi0) <Adaptec AHA-294X Ultra SCSI host adapter> found at PCI 9/0 (scsi0) Wide Channel, SCSI ID=7, 16/255 SCBs (scsi0) BIOS enabled, IO Port 0x7c00, IRQ 12 (scsi0) IO Memory at 0xffafb000, MMAP Memory at 0x4819000 (scsi0) Resetting channel (scsi0) Downloading sequencer code... 406 instructions downloaded scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.0.14/3.2.4 <Adaptec AHA-294X Ultra SCSI host adapter> scsi : 1 host. (scsi0:0:-1:-1) Scanning channel for devices. (scsi0:0:3:0) Refusing WIDE negotiation; using 8 bit transfers. (scsi0:0:3:0) Refusing synchronous negotiation; using asynchronous transfers. Vendor: YAMAHA Model: CRW4260 Rev: 1.0h Type: CD-ROM ANSI SCSI revision: 02 (scsi0:0:6:0) Refusing WIDE negotiation; using 8 bit transfers. (scsi0:0:6:0) Refusing synchronous negotiation; using asynchronous transfers. Vendor: IOMEGA Model: ZIP 100 Rev: J.02 Type: Direct-Access ANSI SCSI revision: 02 scsi : detected total. Partition check: hda: hda1 hda2 hda3 VFS: Mounted root (ext2 filesystem) readonly. [/clip]