Checking a chd takes approximately two seconds. You see the progress bar a little bit longer at chds as when working on roms. But it's definetly not anything like more than a second or two. The CHD routines have changed and were updated to MAME's latest version, which also includes support for split chds. Maybe you turned on scanner's advance option 'decompress chd and check sha1/md5' which does the same as chdman -verify. And that check takes some time...but still it's fast..nothing 'hour-like'.

If that deep-check option is turned off and it takes remarkable long on your system, something other may interfear (maybe a virusscanner trying to analyze a chd). Turn other applications off.


Roman Scherzer