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Problem creating a backup volume for macOS Big Sur with CCC on a multiboot system

Joined
Nov 18, 2015
Messages
161
Motherboard
Gigabyte Z390 Designare
CPU
i9-9900K
Graphics
RX 580
Hi All,
I recently installed macOS Big Sur in a separate APFS volume alongside macOS Catalina on my system drive in a dual boot configuration using OpenCore Boot Manager. This is the system drive situation after installation:

Schermata 2021-09-12 alle 11.08.34.png


Now, before updating both versions of macOS I thought about adding an APFS volume dedicated to the macOS Big Sur backup to the existing macOS Catalina backup bootable drive (a mechanical disk).
Using CCC (v. 6.0.2) and selecting the macOS Big Sur installation volume on the system drive as source and volume dedicated to macOS Big Sur Backup created on the backup drive as destination, however, at the end of the process, the macOS Big Sur "Data" volume does not appear in the Backup drive:

Schermata 2021-09-12 alle 11.10.22.png


and also Big Sur backup does not appear in the OpenCore start menu.
What could I have done wrong?
Thanks in advance for Your help
 
Last edited:
Joined
Mar 13, 2015
Messages
96
Motherboard
GA-Z97X-UD3H-BK
CPU
i7 4790K
Graphics
HD 4600
Mac
  1. MacBook
  2. Mac mini
Mobile Phone
  1. Android
Ran into same issue. It seems Big Sur is a different beast for backups. I settled for "standard" backup.
 
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