[lug] another cdrom verification strategy

[D. Stimits]

Hmm, I don't know what the weaknesses of this are, but since it was a 
topic a while back, thought I'd throw it in. I've been using it in the 
last few days (used to use it and no media ever passed, but recent 
media...Taiyo Yuden...have all succeeded).

What I did was take an sha1sum of the iso I used to burn the cd. Then 
recreate the iso via:
dd if=/dev/cdrom of=test.iso bs=512

And then do sha1sum on the test.iso. If it matches, it's good.

dd seems fairly unforgiving of track errors, I'm not sure how much the 
system will do to try and deal with bad tracks when reading raw data via dd.

FYI, I have not burned much media yet, but I have yet to have a single 
failure of DVD's of Taiyo Yuden (this was one of the recent topics as 
well...people had a lot of experience with Taiyo Yuden cd-r, but not 
much with the DVDs...so far the DVDs seem fully reliable from this brand).

D. Stimits, stimits AT comcast DOT net

PS: I'm wonder how one prints on an inkjettable CD? I don't know of any 
inkjets that don't curl the paper in the process of printing, which 
means the cd would be destroyed (or the printer). Are there special 
inkjets for cd labeling?