Drive not showing up as boot drive
 

Hi

I'm using a MBP Mid-15 with OSX 11.5 and the latest SD!

I want to upgrade my SSD and need to boot from an external drive to do so. I formated my Toshiba USB3-Drive as APFS and did a full back up (Backup All files. I actually did that twice now, but the drive won't show up as a bootable device. Neither when I hit Option-Key on startup nor when I check the startup-pane in preferences.

https://velofahren.ch/perla/images/HDtool.png

You didn't make an erase-then-copy backup. Please review this post for instructions:

https://www.shirtpocket.com/blog/ind...ot_a_marathon/

Hope that helps!

Hey Dave, thanks a lot, wasn't aware of that. It worked. The drive still doesn't show up in the preference pane, but it's there when I boot holding the option key. which is all that matters.

Can you give me a hint on how to put that filesystem from the SD-Backup Drive onto the new internal SSD now? I booted from that USB-Drive now but when I launch SD! the internal SSD is not a possible destination (only Disk Image)

Edit: I guess, it didn't really boot from the USB drive. That's probably why the destination is missing...

You can see what you're running from in "About this Mac". It may be that this drive isn't fully boot compatible...

OK, I got it to boot from the USB Drive. But it was painfully slow. I realized it wasn’t an ssd drive after all.

So I bought a new drive. Did APFS-format from Disk Utility, then a SD! ‘erase all and copy’ - it still didn’t show up in the preference pane but it was there when I hit the option key booting up.

I swapped the internal SSD in 5 minutes, booted from the USB Drive and did the same SD! operation the other way: From the UBS to internal SSD (did a APFS formatting first).

Very satifsfied! Great tool and great support. Thanks Dave. I’m glad I can always rely on SuperDuper!

Glad to hear a better drive did...better! :-)