Original 802.11n Extreme Base Station Disk Size?

[cderalow]

I'm trying to connect a new MyBook Essential 2TB drive to my original 802.11n AirPort Extreme Base Station, and for some reason it keeps telling me there's an issue with the disk, despite being fine in OS X.

Was there a limit to how big a disk could be? I have two 1TB MyBooks connected to it now with no issues, not sure why the 2TB drive has problems.

Firmware 7.4.2

 

[cderalow]

sorted it myself eventually.

turns out, the drive had somehow managed to be partitioned using HFS+ but had MBR enabled instead of GUID. not sure how.