Assuming the other iMacs can run the same version of the OS, etc, yes. You will have to change the various names, of course.
None of that should change anything but, again, they all have to be able to run the OS version you're going to copy to them. You may want to create a test bootable version on a drive, take it to each of them and see if they can boot from it.
__________________
--Dave Nanian
|