Hello everyone. I have an iMac 27'' Late 2009 (with Sierra) currently configured with a HDD 1TB and a MacBook Pro 15'' Late 2008 (with El Capitan) currently configured with a SSD Samsung 850 EVO 1TB. I would like to take away the HDD inside the iMac and install the SSD from the MacBook Pro inside the iMac. I know that it's possible but the question is: can I do it without formatting/re-installing/doing something? Will the iMac function properly without any driver or Windows-style problems? Thank you!