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  #1  
Old 03-11-2022, 06:16 PM
madom madom is offline
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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.

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  #2  
Old 03-11-2022, 06:58 PM
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dnanian dnanian is offline
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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!
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Old 03-12-2022, 07:22 AM
madom madom is offline
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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.
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Old 03-12-2022, 07:27 AM
madom madom is offline
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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...

Last edited by madom; 03-12-2022 at 07:34 AM.
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Old 03-12-2022, 08:28 AM
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dnanian dnanian is offline
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You can see what you're running from in "About this Mac". It may be that this drive isn't fully boot compatible...
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Old 03-13-2022, 05:22 PM
madom madom is offline
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Thumbs up

OK, I got it to boot from the USB Drive. But it was painfully slow. I realized it wasnít an ssd drive after all.

So I bought a new drive. Did APFS-format from Disk Utility, then a SD! Ďerase all and copyí - it still didnít 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. Iím glad I can always rely on SuperDuper!
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