What OS X I can install here?

[MDY]

I have here this iMac to reinstall

https://everymac.com/systems/apple/imac/specs/imac-core-2-duo-1.83-17-inch-specs.html

I tried to put 10.6 but didnot recognize the usb pen-drive. What OS X I can install?

 

[Gurmon]

10.4, 10.5 and 10.6 willwordforsure. burn image onto DVD to install.

 

[MDY]

Not possible with usb?

 

[dukefawks]

10.6 through USB will work fine. These machines belong in the garbage though.....