UDMA ICRC error

[Roberto Nunnari]

Hi there.

OS version: FreeBSD 4.7-Stable FreeBSD #3

I just added a disk to my box and after playing with
fdisk and disklabel with this configuration:

fdisk:
****************************************************************
g	c16383	h16	s63
p	1	165	0	39102336
****************************************************************

disklabel
****************************************************************
# /dev/ad1c:
type: ESDI
disk: ad1s1
label:
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 16383
sectors/unit: 39102336
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0		# milliseconds
track-to-track seek: 0	# milliseconds
drivedata: 0

8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
   a:   524288        0    4.2BSD     2048 16384    94 	# (Cyl.    0 - 520*)
   b:   524288   524288    4.2BSD     2048 16384    94 	# (Cyl.  520*- 1040*)
   c: 39102336        0    unused        0     0       	# (Cyl.    0 - 38791*)
   d:   524288  1048576    4.2BSD     2048 16384    94 	# (Cyl. 1040*- 1560*)
   e: 37529472  1572864    4.2BSD     2048 16384    94 	# (Cyl. 1560*- 38791*)
****************************************************************

I have that (to me) crypted errore message..

can anybody tell me what does that UDMA ICRC error means?

May 24 19:58:30 saturn /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or 
device
May 24 19:58:30 saturn /kernel: ad0: 9770MB <Maxtor 91021U2> [19852/16/63] at 
ata0-master UDMA33
May 24 19:58:30 saturn /kernel: ad1: 19092MB <Maxtor 2B020H1> [38792/16/63] at 
ata1-master UDMA33
May 24 19:58:30 saturn /kernel: Mounting root from ufs:/dev/ad0s1a
May 24 19:58:30 saturn /kernel: ad1s1a: UDMA ICRC error reading fsbn 32 of 16-31 
(ad1s1 bn 32; cn 0 tn 0 sn 32) retrying
May 24 19:58:30 saturn last message repeated 2 times
May 24 19:58:30 saturn /kernel: ad1s1a: UDMA ICRC error reading fsbn 32 of 16-31 
(ad1s1 bn 32; cn 0 tn 0 sn 32) falling back to PIO mode

Please, also send replies to my mailbox, as I'm not on
the list.

Thanks for your help.

Regards.
-- 
               Roberto Nunnari -software engineer-
                 mailto:nunnari at die.supsi.ch
  Scuola Universitaria Professionale della Svizzera Italiana
            Dipartimento di Informatica e Elettronica
                   http://www.die.supsi.ch
  SUPSI-DIE
  Via Cantonale                        tel: +41-91-6108561
  6928 Manno                 """       fax: +41-91-6108570
  Switzerland               (o o)
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