In order for anyone to be able to help, I think you’ll need to provide more context. The flashing “?” on the screen means the system cannot find its boot drive.
You said “after my iMac’s drive gave up the ghost”. What does that mean? To me, that implies the drive was dead, and the system wouldn’t boot anyway. It was probably already giving you a flashing “?”. So simply installing a new blank drive wouldn’t change anything.
Did the system boot before, even with a dead drive? If so, how? Did you install an operating system on the new disk before installing it, and it booted off of it before, but does not boot now with a new drive installed?
The more detail you can provide, the more likely it is that someone will be able to understand what the issue might be in your specific case.
Однажды Они, Вы смогут просмотреть график вашего рейтинга, накопленного за всё время.
Репутация еще не заработана.