17 Jan
2023
17 Jan
'23
2:04 p.m.
On Jan 17, 2023, at 2:02 AM, Peter Corlett via cctalk <cctalk(a)classiccmp.org>
wrote:
If you mean CHKDSK.EXE, it's broadly equivalent to Unix fsck plus a surface
scan, and all fsck does is check and repair filesystem _metadata_. If the
metadata is corrupt then that's a good sign that the data itself is also
toast, but a successful verification of the metadata does not tell you
anything useful about the data itself.
And this is where having Optical Discs help. As part of my project, I’ve found backups
from as far back as ’97, and as a result, recovered data that I’d lost by ’99. That
includes an update to a book that can no longer be found on the Internet, and all the code
for a Shareware program I wrote in ’96/97.
The 3-2-1 rule says you should have at least 3 copies of your data, including two on
different types of media, and a 3rd copy off-site.
Zane