[Troubleshooting] 4.90 Evilnat with WebMon 1.47 can't recognize 4TB NTFS USB hdd

Hello, I'm a complete noob, and I received a CFW PS3 from a friend with a 2TB drive in it.
The PS3 has already a couple of roms on it, and they all work fine.

I would like to transfer PS1, PS2, and PS3 ISOs from my PC to the PS3 drive.

I formatted my USB HDD to NTFS (that's what I saw from a quick Google search was recomended) put the the ROMS on it, and connected it to the USB ports on the PS3 (I tried both ports) I enter WebMon>files, and I don't see the drive.

Anything I'm doing wrong?...

[Troubleshooting] 4.90 Evilnat with WebMon 1.47 can't recognize 4TB NTFS USB hdd