A Long Adventure: Repairing Ultra-Rare NTSC Amiga Ultima 6

Re:A Long Adventure: Repairing Ultra-Rare NTSC Amiga Ultima 6 by apples_oranges on Monday April 08, 2019 @07:25AM (#19604151)

Just curious: In that one screenshot, what is a "logical block" (= 13098476)? I thought blocks on floppies were far fewer than 13million? (It also says the physical block is 880.)

[ Parent | on HN ]

Re:A Long Adventure: Repairing Ultra-Rare NTSC Amiga Ultima 6 by tyingq on Monday April 08, 2019 @08:32AM (#19604571)

I believe the 13098476 is a hash table entry that maps to an actual location.

Block 880 appears to be the Rootblock. "The Rootblock contains information about disk : its name, its formatting date, etc...It also contains information to access the files / directories / links". Where "information" is a chained hash table.

My guess is that it looked up the actual location for that hash table entry and found the write error there. Or maybe the hash table entry location itself is borked.

Gory details here: https://github.com/lclevy/ADFlib/blob/master/doc/FAQ/adf_inf...

[ Parent | on HN ]

Re:A Long Adventure: Repairing Ultra-Rare NTSC Amiga Ultima 6 by apples_oranges on Monday April 08, 2019 @10:36AM (#19605581)

Great! Thank you!

[ Parent | on HN ]