Hi > > I have a mid 2011 iMac. I setup a SSD on usb3 over thunderbolt. > All good EXCEPT that it wont boot. Will boot on the usb2 ports but they are > slower than usb3. > I'm looking for a pointer or advice on how to boot on diskA say the internal > disk, but run (root on) diskB > I can't find a thunderbolt 1 disk or adapter > > Can anybody point me at where I could ask these sort of questions > sorry for last-resort posting here
Dave > macsupportcent...@yahoogroups.com > > Mac Support Central, a Yahoo group, is a great resource for all Mac owners. > Many Mac users and professional repair techs. Even an author of a self-repair > book series. Thank you. Al > I have the same iMac and it's not capable of booting USB3, even with a > Thunderbolt or hub. Afraid you are stuck with USB2. > > There are plenty of Thunderbolt drives available. I used one from LaCie. I believe it is a CPU issue, older CPUs can’t, newer can. Every LaCie drive I google is thunderbolt 3. I need 1 or 2. Spelunking I found a very interesting (and unlikely) site that delves deeply into technical stuff like booting. But they raise the issue of codesigning, https://eclecticlight.co/2019/04/10/macs-move-closer-to-compulsory-notarization/ and the potential to codesign an executable which would have a major impact on macports Again thanks to the list for indulging OT stuff James
