On 4/8/21 12:23 AM, Eric Smith wrote: > On Wed, Apr 7, 2021 at 2:33 PM Chuck Guzis via cctalk > <cctalk@classiccmp.org <mailto:cctalk@classiccmp.org>> wrote: > > Okay, I've got a WORM disc here--how do they propose to archive that? > (recall that unwritten sectors can't be read).
There's a big difference--in a WORM, unwritten sectors *mean* something. Recall that you can't ever re-write or erase data. The read/write filesystems are "interesting" and use the presence or absence of data as part of the picture. Just unraveled one such filesystem--it's interesting. You never lose information. Consider that, on a sector basis, there are three possibilities for the value of a bit. --Chuck
