[mdlug] Mystery file system

[R KANNAN]

I tried sessions 1, 2 , 3 & 4 with no luck. dmesg says

Session 2 start 47178 type 4
Unable to identify CD-ROM format.
Invalid session number or type of track
Invalid session number
Unable to identify CD-ROM format.
Invalid session number or type of track
Invalid session number
Unable to identify CD-ROM format.
Session 2 start 47178 type 4
Unable to identify CD-ROM format.


On Wed, Apr 13, 2011 at 6:25 PM, Raymond McLaughlin
<raymond.s.mclaughlin at gmail.com> wrote:
>> I tried using 'session=0' option
>> during mounting that did not help either.
>
> Have you tried session={1..3} ?
>
> On 4/9/11, Aaron Kulkis <akulkis00 at gmail.com> wrote:
>> R KANNAN wrote:
>>> Looks like the header infromation is missing. 'od -c' yields
>>>
>>> 000000  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>> *
>>> 0100000  \0   B   E   A   0   1 001  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>> 0100020  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>> *
>>> 0104000  \0   N   S   R   0   3 001  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>> 0104020  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>> *
>>> 0110000  \0   T   E   A   0   1 001  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>> 0110020  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>>
>>
>> maybe it's a raw file burned to the disk w/o any filesystem
>> (as IF it were a .iso, without being an ISO9660 filesystem).
>>
>>
>>
>>
>>> On Thu, Apr 7, 2011 at 10:38 PM, Aaron Kulkis <akulkis00 at gmail.com> wrote:
>>>> R KANNAN wrote:
>>>>> I got  data CD from someone and I am unable to mount the file system
>>>>> on Linux but I can read it fine on Windows XP. The file system on
>>>>> Windows says UDF and had about 700MB of data on it. While mounting on
>>>>> Linux it just says
>>>>>
>>>> $ su
>>>> password:
>>>> # od -c /dev/dvdrecorder | less
>>>>
>>>>
>>>> You should see the filesystem type spelled out in the first few
>>>> characters.
>>>>
>>>> For example, here are the first few bytes of an XFS filesystem:
>>>> root at kulkilap:/home/akulkis>  od -c /dev/sda6 | less
>>>> 0000000   X   F   S   B  \0  \0 020  \0  \0  \0  \0  \0 001   O   7  \0
>>>> 0000020  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
>>>>
>>>>
>>>>
>>>>> mount: wrong fs type, bad option, bad superblock on /dev/dvdrecorder,
>>>>>        missing codepage or other error
>>>>>        In some cases useful info is found in syslog - try
>>>>>        dmesg | tail  or so
>>>>>
>>>>> dmesg|tail shows
>>>>> UDF-fs: No partition found (1)
>>>>> Unable to identify CD-ROM format.
>>>>> end_request: I/O error, dev sr0, sector 336000
>>>>> Buffer I/O error on device sr0, logical block 42000
>>>>> end_request: I/O error, dev sr0, sector 336000
>>>>> Buffer I/O error on device sr0, logical block 42000
>>>>> end_request: I/O error, dev sr0, sector 336000
>>>>> Buffer I/O error on device sr0, logical block 42000
>>>>> end_request: I/O error, dev sr0, sector 336000
>>>>> Buffer I/O error on device sr0, logical block 42000
>>>>> end_request: I/O error, dev sr0, sector 336000
>>>>> Buffer I/O error on device sr0, logical block 42000
>>>>> end_request: I/O error, dev sr0, sector 336000
>>>>> Buffer I/O error on device sr0, logical block 42000
>>>>> end_request: I/O error, dev sr0, sector 335944
>>>>> Buffer I/O error on device sr0, logical block 41993
>>>>> end_request: I/O error, dev sr0, sector 335944
>>>>> Buffer I/O error on device sr0, logical block 41993
>>>>> UDF-fs: No partition found (1)
>>>>>
>>>>> Any ideas?
>>>>> _______________________________________________
>>>>> mdlug mailing list
>>>>> mdlug at mdlug.org
>>>>> http://mdlug.org/mailman/listinfo/mdlug
>>>> _______________________________________________
>>>> mdlug mailing list
>>>> mdlug at mdlug.org
>>>> http://mdlug.org/mailman/listinfo/mdlug
>>>>
>>> _______________________________________________
>>> mdlug mailing list
>>> mdlug at mdlug.org
>>> http://mdlug.org/mailman/listinfo/mdlug
>>
>> _______________________________________________
>> mdlug mailing list
>> mdlug at mdlug.org
>> http://mdlug.org/mailman/listinfo/mdlug
>>
> _______________________________________________
> mdlug mailing list
> mdlug at mdlug.org
> http://mdlug.org/mailman/listinfo/mdlug
>