Minidisks are very stable because they use Magneto Optical technology - in
other words they need to be hit by both a laser and a magnet at the same
time to change information on them. A plain magnetic field shouldn't affect
the data they hold.
As to life, I don't know how much the heads on a MD player damage the
surface, if at all, over time.
I've got some computer MO discs (similar to minidiscs) that have reliably
held data for five years, no probs.
Don't know about X-rays. I've passed minidisc through loads of airport
scanners though, and they've been okay.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Matt Vukin
Sent: 11 December 1999 05:46
To: [EMAIL PROTECTED]
Subject: MD: md recording life
I know that cd-rs are expected to last about 30 years. Is there a length of
time after which md recordings are expected to fail or degrade in quality?
Also, can they be erased by magnets or xrays?
(I do not yet have a player!)
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