Kubuntu 20.04 RIP to Second Hard Drive

[Jsac4fun]

Hello folks, hoping someone can help me with this. I am pretty new to linux, with 25 years heavy IT experience under windows. I for the life of me cannot figure out how to utilize a secondary hard drive to rip movies via MakeMKV to that drive. I've set permissions, mounted the drive to the home folder. The general consensus is there is a couple versions of this application. I have NO CLUE how to determine whether I have the "snappy" version (i think thats what i saw on another forum). Anycase, I want to utilize a 1tb WD hard drive to rip my movies to then I'd copy them over to my actual media drive. MakeMKV says the directory is invalid when I attempt to point the rip to that drive. What am I missing?