Re: [ARMini-support] reading a (literal) disc in the future

  • From: Adrian Lees <a.lees@xxxxxxxxxxx>
  • To: <armini-support@xxxxxxxxxxxxx>
  • Date: Thu, 19 Nov 2015 01:07:32 +0000 (UTC)

For example, one customer sent me a box of about 8 discs last month, that
he'd keep in his house, boxed and filed, containg his work documents.  Of
these, only 3 read without errors, and two more were partially readable. 
The other three were lost completely, even tested across multiple
computers/drives.

That may not be data loss on the disc medium itself. Floppy drives go out
of alignment over time, so the recovery rate may be higher using the drive
that was originally used to create the disc - if available, of course -
particularly
if the disc was written and re-written many times.

Many moons ago, I learned how to adjust the alignment of floppy disc drives
(primarily 5.25" drives in those days, but I think the same is still true of
all 3.5"
drives) using specialist equipment and expensive calibration discs onto
which had been recorded an analogue signal.

Flash drive data retention life is not so bad at 50 to 200 years, but
what about Hitachi Quartz at 200 million years? probably long enough
for most of us.

I'm not sure, I think some of my part-written projects must be at least that
old.

Regards,

A
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