Re: [opensuse] How do I mount a UDF CD?

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Greg Freemyer wrote:
All,

A client gave me a CD written with a UDF filesystem (I think).

I can see the contents of the CD fine via XP.

With Opensuse 11.1 / Dolphin I get error messages.

From the command line I get:

mount -t udf -r /dev/sr0 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

dmesg in turn shows:

UDF-fs: No partition found (1)
end_request: I/O error, dev sr0, sector 173316
end_request: I/O error, dev sr0, sector 173312
end_request: I/O error, dev sr0, sector 173316
udf: udf_read_inode(ino 43329) failed !bh
end_request: I/O error, dev sr0, sector 173316
udf: udf_read_inode(ino 43329) failed !bh
UDF-fs: No partition found (1)

What should I try next?

FYI: I already have the data accessible by moving it to a thumb. I
would still like to know what is going on.

Greg

Readom which is part of the devd+rw-tools package does seem to be pretty
good at recovering data from damaged media. I would after doing some
tests, suggest it as a better option for optical media than dd for
copying or recovering a damaged image. It is possible to recover usable
info from an sector crc check failure which dd does not really handle
very well (it seems to just blank the failed sector which makes sense
for magnetic media but is problematic for optical media, and there is no
obvious way of over riding this behaviour).

Optical sectors contain integrity checks. failing such a check does not
mean all the data is bad. Different rules apply for magnetic media.

BTW I would expect cdread from the original fork which the author claims
to be more regularly maintained to be equally useful.

- --
==============================================================================
I have always wished that my computer would be as easy to use as my
telephone.
My wish has come true. I no longer know how to use my telephone.

Bjarne Stroustrup
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