Here's a simple guide to do it:
Take note that your old data directory wont be automatically moved to the newly set dir, you'll have to manually move everything in it.
- Go to Bitcoin Core's install directory, it's in "C:\Program Files\Bitcoin" by default. (copy the path for the next step)
- Open 'Command Prompt' (use search if you can't find it) and 'Change Directory' to the dir above using the command: cd "C:\Program Files\Bitcoin"
- Then start Bitcoin Core's GUI with the said command line option using the command: bitcoin-qt.exe -choosedatadir
- The Welcome Screen will open where you can set the datadir.
Take note that your old data directory wont be automatically moved to the newly set dir, you'll have to manually move everything in it.
Hmm senior guided well in detail but keep in mind before doing this you must completely close the Bitcoin Core. As of now, you can use the new directory but Also as the senior said the Old data directory data needed to be manually moved. for this, again don't forget to close the Bitcoin core and then you'll need to copy the entire old directory content you can find by default old data using this route;
Code:
"C:\Users\AppData\Roaming\Bitcoin"
