zip (was: Re: Disk archival techniques)

[Al Kossow]

I have some archives that are archives of archives and intend to go 
back and
extract the original archives into un-packaged treed directories then
repackage into just a zip format so that future users don't have to 
figure
out the zip format to then have to figure out the myriad of CP/M
packaging/squeeze formats.

--

Verifying that all of these files are 'correct' of course..

One thing to be VERY careful of is reinjecting files that were bad and 
fixed
later into reencoded archives.

When I was more active in arcade game ROM archiving, we ran into this 
constantly,
where someone would find corrupt ROM data and declare them as 'new' 
versions of
the game. A CRC (now SHA1) checking scheme eventually evolved to index 
what had
already been shown to be correct (either though simulation or by 
finding duplicates
of the physical ROMS) as well as a utility to detect when ROM dumps had 
things like
stuck adr or data bits.