Burning backup to dvd

[Ed Kim]

Ed Kim wrote:
> Anne Wilson wrote:
>> On Wednesday 26 July 2006 15:56, Ed Kim wrote:
>> This still chokes:
>>
>> ......
>> cdrecord: Found DVD media: using cdr_mdvd.
>> Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).
>> Driver flags   : SWABAUDIO BURNFREE
>> Supported modes: PACKET SAO
>> Drive buf size : 1563904 = 1527 KB
>> FIFO size      : 4194304 = 4096 KB
>> Track 01: data  1714 MB
>> Total size:     1968 MB (195:02.81) = 877711 sectors
>> Lout start:     1969 MB (195:04/61) = 877711 sectors
>> Current Secsize: 2048
>>   ATIP start of lead in:  -150 (00:00/00)
>> Disk type:    unknown dye (reserved id code)
>> Manuf. index: -1
>> Manufacturer: unknown (not in table)
>> Blocks total: 15872 Blocks current: 15872 Blocks remaining: -861839
>> cdrecord: WARNING: Data may not fit on current disk.
>> cdrecord: Notice: Most recorders cannot write CD's >= 90 minutes.
>> cdrecord: Notice: Use -ignsize option to allow >= 90 minutes.
>> cdrecord: Notice: Use -overburn option to write more than the official 
>> disk capacity.
>> cdrecord: Notice: Most CD-writers do overburning only on SAO or RAW mode.
>> ******
>>
>> From the man page:
>>
>>  -ignsize
>>               Ignore  the known size of the medium. This option should 
>> be used
>>               with extreme care, it exists only for debugging  
>> purposes  don’t
>>               use  it for other reasons.  It is not needed to write 
>> disks with
>>               more than the nominal capacity.  This option implies  
>> -overburn.
>>
>> so it doesn't sound as though that would be the solution.
>>
>> In order to rule out some of the possible causes I did try to write a 
>> straightforward data dvd backup in k3b - something I do regularly on 
>> this workstation.  Both boxes have the same version of cdrecord.  On 
>> the box that I'm trying to backup I cannot get a dvd backup.  On this 
>> one there is no problem.  On the problematic one I keep seeing 
>> references to pread642(2)
>>
>> Anne
>>
> Can you attempt to use a different DVD media?  in the past, when I have 
> seen cdrecord spit,
> 
> Disk type:    unknown dye (reserved id code)
> 
> A change in media manufacturers or a double check on +R/-R capabilities 
> and disc types does the trick.
> 
Scratch that Disk type comment, I am getting it for all DVD media.  I 
would still check the compatibility of your drive with +R or -R media 
though.

-- 
Ed Kim, RHCE
http://www.rhatbox.com