Alright, so I saw that Bitcoin Core needs almost 150GB, but that was only after I started downloading and synchronizing to a 120GB SSD and had already transferred bitcoin to a receiving address on there.
A quick solution is to export the private key from Bitcoin Core, and import it into Electrum. But it's totally fine to keep using the pruned version of Bitcoin Core, on an SSD it shouldn't take too long to sync. The pruned version should only take a couple of GB.
I am running Ubuntu Studio, and Bitcoin Core v0.15.1.0. I have tried to locate the bitcoin.conf file, but I do not have a .bitcoin folder anywhere.
The default location for .bitcoin is:
The closest I can find to that is /home/%username%/.config/bitcoin/Bitcoin-QT.conf. I have went into this file, and added prune=550, but every time I launch Bitcoin it keeps widdling away at the 3GB I have left on the SSD before I hit maximum capacity, and the Synchronizing is almost at 50%.
Unless you were very low on disk space from the start, it shouldn't be a problem. The chainstate directory is still a few GB after pruning.
I suggest you close Bitcoin Core, and start it from the console like this:
This should work without any config file adjustments.
