Thanks for the reply SuperJdynamite !
Well, I don't consider you as a downer, things must be said one time or another as long as it's constructive & hoping to succeed implies facing the truth.IMO.
1) it's alright for me most of config files are used for non critical config parameters like window position, app UI config ..etc & since they stay with binaries everything should work ok....IMO, not that critical !
2) Yes, there are & i'm tracking'em down, for now, I loaded each hive & modified the paths inside each hive, the BSOD takes longer to appear now, not just after the windows logo...I've disabled auto-reboot on system failure & now the registry can't load the SAM hive only, I think it's the last stage before a normal boot, because it's for user profiles....Help is needed here ! (or at least wish m luck)
3) I've already thought about this one & for me it's an acceptable constraint & the opposit would be worse than this.
4) For now, I don't have an AV on that disk, but I have one on the other disk, the modded ntldr was not flagged for now, but who knows, if I had an AV maybe it would...IMO it won't be flagged because the file size doesn't change(only the checksum changes) I hope the AV will just leave it alone as it does with the "crackmes"....in the worst case, if it's flagged I'll add it to the trusted list.
5) Yes, you're right on this one, I've thought about it & did my best to avoid it, but I have to choose between modding ntldr and doing multiple installs with the same registration key wich at some point will be banned (I'll try to contact MS & ask'em to make it official) the other solution is to use a corporate edition of XP but this is away from the common joe....maybe there's an other way that would be less elegant than this one, but will permit the use of an original ntldr.
6) Did I say I was looking for a finacial advantage ???, No ! I'm after performance !
Think about doing a defrag of a 200GB HD while you can just defrag 10GB or 20...time is money !
7) It'd require a partition for each OS installation...20GB for 10 installs that are different in ~40MB of registry hives...Wasting 400MB is ok, waisting 20GB is poor if you add the maintainance overhead, it'll be inacceptable.