Just a general question or idea, can the blackcoin wallet elect to store its largest files on a certain path ? Quite often I see operating systems setup with limited space on C drive but have additional space via USB or just conventional drives. Would improve usability for me to have gigabyte files where I want them especially if I can avoid spinning up an old mechanical drive.
Sorry if I missed a switch or option already available, I figured this is the place people would know.
There is a way to to that if you create a shortcut to your blackcoin qt inside a folder you installed it to.
Right click your blackcoin qt and select "create shortcut". Right click the shortcut and select properties. A popup should open containing a text box with the word target written to the left of it. Add the line of text below to the end of whatever is already written in it. Make sure there is a space between the text that was already in the text box and the text below.
-datadir=.
Press the apply button, then the OK button.
Double click the shortcut to start the blackcoin wallet and it should store its largest files (the blockchain) and also its wallet.dat inside the folder containing the shortcut.
You can install the blackcoin qt to a folder on a thumbdrive, use that shortcut technique, and when you double click the shortcut the blockchain and wallet.dat will get stored on your thumbdrive, not in appdata.
If you use that technique, and accidentally double click the qt instead of the shortcut a new wallet dat and blockchain will get created on your C drive inside appdata. Make sure you always start your wallet using the shortcut.
Or maybe he will be so drunk to fat finger a huge buy order and push BLK to 0.001 
