Still only shows the 1.4 iMac update.
About the iMac EFI Firmware 1.4 Update
* Last Modified: May 05, 2009
* Article: HT3561
Summary
This update addresses issues where iMac computers with ATI Radeon HD 4850 graphics intermittently stop responding and addresses wake-from-sleep issues in Boot Camp.
Products Affected
iMac (24-inch, Early 2009), iMac (20-inch, Early 2009)
No clue whats going on there. I'm getting the generic/US page because it has the 1-800 number at the bottom.
BTW, Apple don't specify what version of SATA drives are in their machines.
Ahh okay. That is why they say it isn't supported.
Anyway, when has a computer manufacturer ever claimed to support any hard drive that they don't themselves ship or include in a published compatibility list?
In the bad old days of IDE you would need a compatibility list but nothing really recent has needed that. Well... except some issues with buggy SATA controllers and buggy SATA drives when used together.