Neither, The original internal 1 TB HDD was a 3.5" SATA drive.Is Hdd 2.5" or 3"
imac 27" late 09. I need to buy a ex drive box as I will be pulling the old 1tb drive out. Suggestions ?
Neither, The original internal 1 TB HDD was a 3.5" SATA drive.
https://www.ifixit.com/Guide/iMac+Intel+27-Inch+EMC+2309+and+2374+Hard+Drive+Replacement/1634
Just about any external enclosure (with power supply) for a 3.5 " drive should work. Have you decided how you want to connect the external to your computer? The fastest available connection for a 2009 27" iMac is the Firewire 800. If you want to use the firewire then you will need an enclosure that supports it.
Good call.
2009 is ready for retirement.