I had installed bitcoin in c:\bitcoin however C disk has run out of space and I moved blocks to other HDD.
bitcoin core does not load wallet.dat that I have stored in c:\bitcoin
Instead it creates new wallet.dat file in datadir (E:\bitcoin)
Is it possible/how to get bitcoin core to load original wallet.dat ?
I really do not wish to just place wallet.dat in E:\bitcoin (unencripted HDD).
No, the wallet.dat can have a different name with
-wallet=mywallethasanicebutlongname.dat, but it must in the same directory as
-datadir=here. Bitcoin core wallet files are encrypted (the private keys at least) with your password and offer decent brute force resistance. What exactly are you worried about?
Like said above, if your wallet is password protected in Core, it is encrypted.
It doesn't do much more to encrypt it twice.