My disk is full, and I have tried everything to try and free it up.
Xcode 9.4.1 is taking up 5.54 GB on disk and I can't unzip Xcode 10 GM without it failing because of disk space available.
Is it safe to uninstall/delete the current Xcode app (9.4.1) and then start fresh with installing Xcode 10?
(I hope this doesn't sound really dumb, but just want to be safe than sorry)
Thanks,
I hope this doesn't sound really dumb
The only dumb part is that part about not having enough room on your disk. You need to fix that (though that is not a Stack Overflow topic). Space is cheap so get some. In your situation, if you are really that short of space and you can't find any more, I would suggest putting the .xip file onto an external drive, unzipping there, then copying Xcode itself onto your real disk. However, it would be better to free up the space. Use DaisyDisk to find out what's taking up the space and delete some unneeded big stuff.
The question itself, though, is perfectly reasonable, and the answer is, there's no problem at all with deleting Xcode 9.4, emptying the trash (takes quite a while), and then installing Xcode 10.