Don't know, don't care. If we're being attacked by nuclear bombs of any
stripe, I have far more humongous things to worry about then what's on my hard drives.
I suppose if you were wring a book and wanted to back that up to an optical disk, go for
it. On Monday, January 16, 2023, 09:04:48 PM EST, Ryan de Laplante via cctalk
<cctalk(a)classiccmp.org> wrote:
What about M-DISC DVDs and BluRays? Archival grade, not susceptible to magnetism or
EMP. I think BluRay discs are made of a harder material than DVDs and don’t scratch as
easily.
On Jan 16, 2023, at 8:11 PM, Chris via cctalk
<cctalk(a)classiccmp.org> wrote:
Been there. Seen it. It seems paper or tyvek is the way to store these things.
But the question is in 2023 why are you still committing data to optical media? I dumped
all my cds and dvds on to magnetic storage years ago. I got burned waiting as long as I
did even.
Some of the old spinning cd cleaner/restorers used an abrasive slurry. The last one I
bought (Onn) only has a cleaner afaik. You'll want to clean the disks thoroughly. Then
try a "cleaning" solution that's more aggressive. My old cd cleaner would
leave circular scratches on the disk. But it was readable after that. In 1 instance (then
I lost it). Such an approach should be a last resort though.
Don't just rely on Mac/Windoze facilities for reading stubborn disks. There are
programs that work better if you search.