Suddenly I can't save files on my external hard drive anymore!
I have Sony external hard drive HD-E2, and it was working fine; I could save files on it and copy files from it. But then, suddenly, I was only able to read from it. I find it odd since it was working great for almost 4 months.
My laptop is MacBook Pro.
However I started to have this problem after upgrading to El Capitan MacOS.
Could this be somehow related or relevant to the problem?
How to fix this problem?