freakermonguer Posted April 27, 2021 Share Posted April 27, 2021 I'm going to update from Catalina to BigSur. I made a SuperDuper! bootable backup of my drive. When I try to boot from this recovery with OpenCore, the booting process shuts down the computer. The verbose boot shows this information that - at least for me - doesn't tell the possible cause of the crash. This never happened before. SuperDuper! copies worked like a charm.... Link to comment Share on other sites More sharing options...
miliuco Posted April 27, 2021 Share Posted April 27, 2021 @freakermonguer SuperDuper! 3.3.1 is not yet fully Big Sur compatible. You can use Carbon Copy Cloner instead. Link to comment Share on other sites More sharing options...
freakermonguer Posted April 27, 2021 Author Share Posted April 27, 2021 Thanks!!!!! But I'm booting from a Catalina backup not a Big Sur one... will try then with Carbon Copy Cloner anyway to see if it works.... I've read somewhere that it might be because some hidden partitions are not being copied (the "failed to mount vm" error it's maybe the reason it crashes booting) Link to comment Share on other sites More sharing options...
miliuco Posted April 27, 2021 Share Posted April 27, 2021 CCC works fine. SuperDuper not yet. But it works on Catalina. Link to comment Share on other sites More sharing options...
freakermonguer Posted April 27, 2021 Author Share Posted April 27, 2021 that's what puzzles me. There has to be some problem in the clone it has created, but this never happened to me before with other OSX versions. And I've done the backup 2 times with the same result. I was thinking on reformatting the SSD unit again from scratch and start over, but I will try to do a CCC to see if it works with it... Link to comment Share on other sites More sharing options...
miliuco Posted April 27, 2021 Share Posted April 27, 2021 (edited) 1 hour ago, freakermonguer said: that's what puzzles me. There has to be some problem in the clone it has created, but this never happened to me before with other OSX versions. And I've done the backup 2 times with the same result. I was thinking on reformatting the SSD unit again from scratch and start over, but I will try to do a CCC to see if it works with it... As I said: SuperDuper doesn't work on BS, CCC works on Big Sur. SuperDuper works on Catalina. Edited April 27, 2021 by miliuco Link to comment Share on other sites More sharing options...
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