CD Drive trouble

CD Drive trouble

Post by Robert Dor » Tue, 02 Dec 2003 11:11:20


Hello all,

After a recent session of burning CDs, my drive no longer seems to be
working - under FreeBSD, at least. I've always used /dev/acd0a as my cdrom
device file, and it's always worked fine in the past. When I try it now,
however, this is the message I get...

MANTOY root # mount_cd9660 /dev/acd0a /cdrom
mount_cd9660: /dev/acd0a: Invalid argument

Can anyone tell me what this is all about, and how do I fix it so I can use
my CD drive again?
 
 
 

CD Drive trouble

Post by Us » Tue, 02 Dec 2003 19:36:54

On Mon, 01 Dec 2003 02:11:20 GMT




Did you try plainly mount /dev/acd0c /cdrom (notice acd0C not acd0A)?



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CD Drive trouble

Post by Robert Dor » Wed, 03 Dec 2003 03:58:22


Yes I have tried using plain old mount, and I have tried using acd0c as
well. Same results.
 
 
 

CD Drive trouble

Post by Lowell Gil » Wed, 03 Dec 2003 04:12:09

Robert Dormer < XXXX@XXXXX.COM > writes:




Is the drive still being detected?

If you don't want to reboot, you can at least check if it probes (and
resets) with atacontrol...
 
 
 

CD Drive trouble

Post by Robert Dor » Wed, 03 Dec 2003 08:31:00


Reboot? This is a persistent problem - it is occuring across multiple
boots. The drive in question works fine under windows, however, so I know
it's not a hardware issue.
 
 
 

CD Drive trouble

Post by Lowell Gil » Wed, 03 Dec 2003 11:51:12

Robert Dormer < XXXX@XXXXX.COM > writes:


Is the drive still being detected?
 
 
 

CD Drive trouble

Post by Robert Dor » Wed, 03 Dec 2003 13:47:34


Yes, according to my dmesg output.
 
 
 

CD Drive trouble

Post by Lowell Gil » Thu, 04 Dec 2003 00:09:16

Robert Dormer < XXXX@XXXXX.COM > writes:



Okay, assuming you're doing this as root, then you seem to be having
trouble with the device node. Assuming you're running the latest
release (4.9), you should try remaking the device nodes themselves.

# cd /dev
# sh MAKEDEV acd0
 
 
 

CD Drive trouble

Post by Robert Dor » Thu, 04 Dec 2003 00:54:47

>


You're gonna love this, but...i've already done that too - several times at
this point.
 
 
 

CD Drive trouble

Post by Lowell Gil » Thu, 04 Dec 2003 01:00:29

Robert Dormer < XXXX@XXXXX.COM > writes:


What do "atacontrol info" and "atacontrol cap" tell you?
 
 
 

CD Drive trouble

Post by Robert Dor » Thu, 04 Dec 2003 12:50:52


MANTOY root # atacontrol info 0
Master: ad0 <WDC WD200BB-32CLB0/05.04E05> ATA/ATAPI rev 5
Slave: no device present


MANTOY root # atacontrol cap 0 ad0
ATA channel 0, Master, device ad0:

ATA/ATAPI revision 5
device model WDC WD200BB-32CLB0
serial number WD-WMAAR3229354
firmware revision 05.04E05
cylinders 16383
heads 16
sectors/track 63
lba supported 39102336 sectors
lba48 not supported
dma supported
overlap not supported

Feature Support Enable Value Vendor
write cache yes yes
read ahead yes yes
dma queued no no 0/00
SMART yes no
microcode download yes yes
security yes no
power management yes yes
advanced power management no no 0/00
automatic acoustic management yes no 254/FE 128/80


Strangely enough now I can mount the drive again, as either acd0a or acd0c.
The behavior is very flaky, sometimes it works just fine, sometimes not at
all...