If you are planning to mount like a portable drive using Windows NTFS File System on the Rocky Linux 8, what you will see immediately when you issue the command after you plug the portable drive in

# mount /dev/sdd1 /data1
mount: /data1: unknown filesystem type 'ntfs'.

Step 1: Enable EPEL Repo

# dnf install epel-release

Step 2: Install NTFS-3g

# dnf install ntfs-3g

In some blogs written elsewhere, these 2 packages are more than enough, but I was still having issues. In my situation, I need to put in 5 packages

Step 3: Install all NTFS-3g packages

# dnf install *ntfs*

This time it works for me.

Step 4: Simply mount (Hooray!)

 # mount /dev/sdd1 /data1