What do these boot-time "probe" messages mean?  I'm running 1.5.2 on a Dell box;
ahc2 is a built-in 7880.

ahc2 at pci2 dev 14 function 0
ahc2: interrupting at irq 10
ahc2: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs
scsibus1 at ahc2 channel 0: 16 targets, 8 luns per target

....

ahc2: target 5 using 8bit transfers
ahc2: target 5 synchronous at 20.0MHz, offset = 0xf
probe(ahc2:5:0): SCB 1d - timed out in Status phase, SEQADDR == 0x155
SCSIRATE == 0xf
probe(ahc2:5:0): BDR message in message buffer
probe(ahc2:5:0): SCB 1d - timed out in Status phase, SEQADDR == 0x155
SCSIRATE == 0xf
probe(ahc2:5:0): no longer in timeout, status = 0
ahc2: Issued Channel A Bus Reset. 1 SCBs aborted
ahc2: target 5 synchronous at 20.0MHz, offset = 0xf
cd0 at scsibus1 target 5 lun 0: <NEC, CD-ROM DRIVE:464, 1.05> SCSI2 5/cdrom removable

My first guess would be a cable or terminator problem (that's generally 
my first guess about any weird SCSI stuff....), but the CD drive (the only 
thing on that controller) seems to be ok.  I used it to install 1.5;
that worked, with no error messages, weird pauses, etc.


		--Steve Bellovin, http://www.research.att.com/~smb
				  http://www.wilyhacker.com