i noticed that one of the defrag programs i use in conjunction with jkdefrag, Perfectdisk 8, has the option to do an optimization before most of the windows OS is loaded, therefore defragmenting Windows items that can't be defraged during operation, plus another one i use, sysinternals page defrag, defragments core items like registry and such, i know jkdefrag already does a couple of those but is it possible to do those. I wouldn't care if i still had to run all 3 as a 3 man tag-team, but i just was curious as to seeing if it was possible. Thanks for taking the time to read this post.

as i said i love the program and i'm real tech savvy guy, but what is the difference in the new v3.7 Jkdefrag's of "-a 4" and "-a 6"