WD My Book 2T Model WDBF JK0020HBK-NESN compatibility with Mac OS 10.5.8

Apparently WD Tech Support declines to answer the following query. Does anyone know the answer? Thanks

I’ve discovered that the new My Book 4T drives that I’d planned to used with my iMac running OS 10.5.8 are not compatible with that OS. I’ve got My Book 2T drives Model WDBF JK0020HBK-NESN conncect to a Windows 7 machine. Are those drives  compatible with my 10.5.8. iMac? If so, I’ll connect them to the iMac and the new 4T drives to the Windows machine. Many thanks, Martin White

Hello and welcome to the WD Community.

Currently, this unit is advertise as compatible with Mac OS X 10.6.5 or later (requires reformatting) Anything else than that will be listed as possible. 

I haven’t try using a my book on a 10.5.8 system. Let’s see if any of the users can share some info about that