[Re: Unable to write to CD-R]

[Norm Vilmer]

Norm Vilmer wrote:

> Richard Lynch wrote:
> 
>>> cdrecord -scanbus
>>> Cdrecord 2.00.3 (I386 .....
>>> cdrecord: Operation not permitted. Error opening /dev/pass0 Cam error
>>> 'camreal_
>>> opendevice: coundn't open passthr. Cannot open SCSI driver.
>>
>>
>>
>> I dunno about all this other stuff, but to me, *THIS* looks like you 
>> don't
>> have the IDE-SCSI module installed.
>>
>> The IDE-SCSI module "fools" the OS into believing your IDE CDRW device is
>> "really" a SCSI device.
>>
>> Without that, cdrecord can't work, since it works through the SCSI 
>> interface.
>>
>> Under RedHat, you would find/download/install the ide-scsi software, and
>> then do "insmod ide-scsi"
>>
>> You might also need to make some devices /dev/pg0 etc -- It's all in an
>> FAQ somewheres for cdrecord.
>>
>> I gather from my minimal experience with FreeBSD that you'd be doing
>> something more like pkgload (?) but the principle remains the same:  You
>> need a module to "fool" the OS into believing your CD/DVD burner is SCSI
>> when it's not, or cdrecord simply won't talk to it.
>>
>>
>>> cd0: <TOSHIBA DVD-ROM SD-R6112 1031> Removable CD-ROM SCSI-0 device
>>
>>
>>
>> This, however, indicates that it *IS* a SCSI device...
>>
>> And its number is "0"
>>
>> In which case, I would start with:
>>
>> cdrecord dev=0,0,0 -data whatever.iso
>>
>>
>>> <TOSHIBA DVD-ROM SD-R6112 1031>    at scbus1 target 0 lun 0 (pass0, cd0)
>>
>>
>>
>> Whoops!
>>
>> Also try:
>>
>> cdrecord dev=1,0,0 -data whatever.iso
>>
>> as it seems to be on bus 1.
>>
>> Do all of this as 'root'  If you can get it to work as root, then 
>> evaluate
>> how badly you need it to work for other users, and what "holes" you open
>> up to do so.
>>
> I am logged in as root. Tried cdrecord dev=1,0,0 -data (it is on bus 1)
> but I get the same error message. Also, tried setting the permissions
> on acd* cd* xpt* pass* devices in /dev. No change. I really get this
> feeling the OS thinks it is a read-only drive.
> 
> When FreeBSD is installed, it gets some information from the BIOS.
> Lots of important stuff like the geometry of your hard drive, etc.
> If the BIOS is reporting this wrong or not the same way FreeBSD
> see a device, things can break. Is there a flag somewhere I can
> flip so that the OS know it can write to this device (the DVD-RW)?
> 
> 
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> 
I am burning a cd!!!!
The problem was kern.securelevel=2. Set to 1, and it works great.

Thanks to everyone that responded.