There's a nagging problem right at the get go. Where is the backup copy? If you were wanting to keep this stuff around, you would have quick formatted it and then copied it in from backup. Since you didn't do that, this must be files that can get lost without feeling loss.
So no. The safe way is still best.
I have the general knowledge on how to do this, but I just want to clarify.
I'm currently installing a new hard drive as the main booting hard drive. My old one is just 2.5 yrs old and is running slower etc.
I'd like to just use my old one for music and tv show storage. Is there a faster way to do this instead of reformatting the whole thing and redownloading those files? Can I delete everything else except the files?
However, if there's anything undesirable on the hard drive I guess re formatting the thing is the safest option, if not the fastest...