cannot mount cdrom - not a newbie problem

[Malcolm Kay]

On Wed, 15 Dec 2004 12:49 am, Haulmark, Chris wrote:
> Someone broke the silence:
> > i have a genuine problem here.
> > i noticed my backup cdrw's had stopped working at some point. upon
> > furthur investigation i find i cannot mount cd's full stop.
> >
> > titan# mount -t cd9660 /dev/acd0c /mount
> > cd9660: /dev/acd0c: Invalid argument
>
> Is this a typo of acd0c with the c?

Prior to RELEASE 5.x default CD devices carried a 'partition' suffix
of 'a' or 'c' but as of 4.x acd0a and acd0c were/are equivalent and
correspond (I believe) to acd0 in 5.x. Man pages and other documentation 
in 4.x is not entirely consistent sometimes using /dev/acd0 and elsewhere
/dev/acd0c. 

Malcolm

>
> Chris
>
> > the above command makes the drive light flicker for 3 seconds
> > then the
> > error.
> >
> > this is NOT a hardware problem. i get the exact same issue
> > with my brand
> > new dvd drive.
> >
> > here is what dmesg gas to say:
> > acd0: DVD-R <HL-DT-ST DVDRAM GSA-4160B> at ata1-slave WDMA2
> > da0 at hpt3740 bus 0 target 0 lun 0
> > da0: <HPT3xx RAID 1 Array 3.00> Fixed Direct Access SCSI-0 device
> > da0: 190782MB (390721957 512 byte sectors: 255H 63S/T 24321C)
> > Mounting root from ufs:/dev/da0s1a
> > cd0 at ata1 bus 0 target 1 lun 0
> > cd0: <HL-DT-ST DVDRAM GSA-4160B A301> Removable CD-ROM SCSI-0 device
> > cd0: 16.000MB/s transfers cd0: cd present [1 x 2048 byte records]
> >
> > note this was working perfectly.
> > i suspect that some how my ata device has gone "bad" some how.
> >
> > let me get the obvious replys out of the way:
> > yes i have googled nothing i can find has even touched on a fix.
> > yes there is a disc in the drive
> > no it is not an audio disk.
> > there is nothing else connected to the ide ports.
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