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From: franky@pinewood.nl (Frank ten Wolde)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: HP4020i (CD-R) Usage question (dd input/output error?)
Date: 5 Jul 96 09:07:16 GMT
Organization: Delft University of Technology, Dept. of Electrical Engineering
Lines: 65
Message-ID: <franky.836557636@pwood1>
NNTP-Posting-Host: gw.pinewood.nl
Keywords: CD-R, iso9660, 4020, worm
X-Newsreader: NN version 6.5.0 CURRENT #1
Hello,
I need some help/reference with respect to the CD-Recordable
HP 4020i and how to use it under FreeBSD-2.2-960612-SNAPSHOT.
I use the following set of commands and get the following output:
# wormcontrol select HP 4020i
# wormcontrol prepdisk double dummy
# wormcontrol track data
# rtprio 5 team -v 1m 5 < IMAGE | dd of=/dev/rworm0 obs=20k
1093 kilobytes, 0 seconds
[ The green light on the 4020i blinks for a few seconds ]
[ The red (write) light blinks for a few seconds ]
1093 kbytes written [Carriage Return]
dd: /dev/rworm0: Input/output error
2186+1 records in
54+0 records out
1105920 bytes transferred in 4 secs (276480 bytes/sec)
# wormcontrol fixate 1
#
I'm worried about the error from 'dd'. Is this caused by the 'dummy'
command or is something else going wrong?
I also noticed that if I configure the kernel for the worm0 device,
the cd0c device is no longer configured. Thus:
kernel without worm0 device :
cd0c (4020i) available for mounting CD9660 disks
kernel with worm0 device :
worm0 (4020i) available for writing
cd0c (4020i) NOT available (device not configured)
Is there a way in FreeBSD to have both the worm0 AND cd0 device
configured simultaneously?
My hardware is:
-----------------------------------------------------------------
System : Pentium 166MHz
32 Mb RAM
Adaptec 2940 SCSI controller
CD-R HP4020i on SCSI target 2
1 Gb HDisk on SCSI target 0
SCSI : Adaptec 2940 Configuration for 4020i
Initiate Sync Negotiation : no
Maximum Sync Transfer Rate : 5.0 Mbyte/s
Enable Disconnection : no
Kernel configs :
options "SCSI_DELAY=10"
device worm0 at scbus0 target 2
-----------------------------------------------------------------
Thanks for your time,
(If possible reply by e-mail: franky@pinewood.nl)
-Frank ten Wolde
--
----------------------------------------------------------------------
F.W. ten Wolde (PA3FMT) Pinewood Automation B.V.
E-mail: franky@pinewood.nl Kluyverweg 2a
Phone: +31-15 2682543 2629 HT Delft