6 Feb
2007
6 Feb
'07
6:40 p.m.
Jim Leonard wrote:
arcarlini at iee.org wrote:
Yes. In my Universe, those are the ones that matter :-)
As I said, most of the CDs and DVDs that have
failed have been
entirely unreadable (except usually for the TOC).
That have failed *you*. Mine have been gradual.
I _think_ many of mine (not yet into double digits) were badly written
rather than victims of decay. I only know for certain of one CD and one
DVD that tested OK at write-time and failed at some later stage. Both
of those were total failures. The very first failure I noticed (the one
that taught me that a checksum of some sort was useful!) was a partial
failure - only a few files were unrecoverable and those were available
elsewhere anyway. I've had many more failed-verification-during-write
cases, and when I play around with those I usually find that only a
few blocks of data are dead.
How are you storing yours? Mine go into black folders that are closed
completely (ie. no light gets in) and stored in a cool dry place. The
first CD I ever burnt was in 1996 and it still reads...
Apart from the non-archival, daily-use ones, mine end up in either
black folders or DJ-style cases. CDs and mushrooms both do much better
in the dark!
Antonio