We still need to mount this disk before you can use it.
press "N" to create a new partition.
It will ask a few questions, just press [enter] to answer the questions.
then press "w" to write this to the disk.
That will kick you out of fdisk again.
Think of a directory name that you want to mount this hard drive under...
It should not have any spaces in the name.
What are you going to put on this hard drive?
Maybe name the directory something like car_pictures or favorite_songs
or anything. Maybe just something like extra_space.
Let's start over.
press "g" to create a new partition table
press "w" to write this to the disk.
This will kick you out of fdisk and take you back to the system prompt.
Let me know when you get this far. You will have a nice new empty 950GB disk now.
In the opening post of this thread, you mentioned wanting to keeo the data you had in the popOS
partitions on the other hard drive. Is this not the case?
It's waaaaaaay easier to to reformat it, and add it to your existing fedora volume group
if you don't care about any data on there.