I recently re-installed EasyTutu, after a run with another game (my HD space is limited so games have to come and go for everything to fit). I have the old 5 disk installation and I'm lucky that when I bought TotSC, I had to buy BG1 again (it was all packaged together) because area 2400 (on disk 4) is corrupt on one version.
Due to the oldness of my computer, I've never had a problem with green water (2D graphics) and luckily enough, never had a problem with Beregost even after repeated visits to the town. I also keep the BG2 interface because I like it but I'm in love with Ghrey's map. I haven't really modded Tutu this time except for the G3 BG NPC Project. (No, sorry, I didn't install Finch, even though she's a hero ... and a librarian.)
Finally, many, many thanks to all involved in Tutu-ising BG1 - both the original Tutu and EasyTutu. The whole idea was a work of genius. The BG2 engine is so much easier to play.
Following all that waffling, my question is this: Can I uninstall/remove the original BG1? I don't mean the Tutu version, I mean the original install that EasyTutu copied from? As I said, HD space is at a premium and I've effectively got 2 versions of both BG1 and BG2 right now.