Quote from: virualcashtrade on August 27, 2017, 01:06:56 PM

Electrum was already tested and breaks down when I try to import my private key db(each wallet hold approx 10000 addresses). The limit to import is something about 25-40 a time.
The core is running from an external hard drive. Useraccounts I can create, but there will be some problem to run on each a different wallet. But if it can working, any advise is welcome.
My laptop capacity doesn't allow to have even one blockchain entirely be kept.
Thank you

You'd have to make 4 users as I understand the conig file is stored in the AppData section of your user account. Thus 4 user accounts would be needed.

If you make your 4 user accounts, then make a folder in your hard drive for each of the four usernames.
Say you have a current drive path of F:\Bitcoin, change it to F:\%user1%\bitcoin for all four.
Then, when boting bitcoin QT, if that's in the external hard drive, then you'll put the application either in the root or in the bitoin file and on initial use, with each user account, run it with the parameter -datadir=F:\%username%\bitcoin\data and it should work.

You could technically do it with one user acount and produce 5 different partitions (as I think that's the max for windows/NTFS and most drives are formatted to NTFS) - If you have windows I can explain how to produce multiple partitions fairly simply.
This would then require you to bring different partitions on and offline when you want to run the computer (which only takes one or two commands to do).