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Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: Zoidberg
Date: November 03, 2020 06:00PM
I haven't seen it on their blog yet; received via email.



Apple will be shipping a major new operating system in the near future, and I wanted to take a moment explain how this change affects your CCC backups.

  • We recommend waiting for a few updates before upgrading to Big Sur because important components of the OS aren't working yet.
  • Early adopters can install macOS Big Sur onto the CCC backup volume to make it bootable.

What's changing in Apple's next OS upgrade?

With the announcement of macOS Big Sur, Apple has retired Mac OS X (10) and replaced it with macOS 11. As with every OS since the original release of Mac OS X, CCC has been adapted to accommodate the changes to this new OS. As the numeric change would suggest, though, this is the biggest change to macOS since Apple introduced Mac OS X roughly 20 years ago.

The system now resides on a "Signed System Volume". This volume is cryptographically sealed, and that seal can only be applied by Apple; ordinary copies of the System volume are non-bootable without Apple's seal. To create a functional copy of the macOS 11 System volume, we have to use an Apple tool to copy the system, or install macOS onto the backup.

Will CCC 5 work on macOS 11 or will I have to upgrade?

CCC 5.1.22 is qualified for use on macOS Big Sur, and that update is free for all CCC 5 license holders. Choose "Check for updates…" from the "Carbon Copy Cloner" menu and follow the instructions provided to apply the update.

Can CCC copy the macOS 11 System volume?

CCC will be able to use Apple's APFS replication utility ("ASR") to copy the System volume (we field-tested that functionality for the flawed 10.15.5 update). As of the latest Big Sur release, however, Apple's APFS replication utility is not working correctly with the Signed System Volume. As a result, ASR-created copies of the System volume are not bootable. Apple is aware of this issue and is currently working to resolve it.

Can I still make bootable backups on macOS 11?

Yes. There are two approaches to making your backups bootable on Apple's new OS. When Apple works out the problems in its APFS replication utility in an future update to macOS Big Sur, CCC will leverage that directly to copy the System volume and produce bootable backups. In the meantime, you can install macOS Big Sur onto your APFS-formatted CCC backup volume if you would like to make it bootable.

Does CCC back up all of my data, applications, and system settings?

Yes, absolutely. This part of CCC has not changed — CCC continues to provide complete backups of all of your data, applications, and system settings. Additionally, CCC offers support for snapshots, giving you access to older versions of your files. We design CCC to be a complete and more flexible replacement to Time Machine.

Does my CCC backup have to be bootable for me to restore data from it?

No. Bootability is a convenience that allows you to continue working if your startup disk fails, but it is not required for restoring data from a CCC backup. You can restore individual folders and older versions of files (i.e. from snapshots) using CCC while booted from your production startup disk. CCC backups are also compatible with Migration Assistant, so you can use Migration Assistant to restore all of your data to a clean installation of macOS (e.g. on a replacement disk).

Should I upgrade my Mac to macOS Big Sur?

Major system upgrades are often disruptive, so we have always recommended a very conservative approach to applying them. Consider the following:

  • Is the upgrade required for my Mac?
  • Will this upgrade improve the performance of my Mac, or degrade performance?
  • Does the upgrade provide some functionality that will make me more productive, or otherwise greatly increase my enjoyment of using my Mac?
  • Does the upgrade fix a problem that is preventing me from effectively using my Mac?
  • What software will no longer work after applying the upgrade?

If the upgrade turns out poorly and you have to downgrade, you certainly may downgrade using a CCC backup from an earlier OS. These sorts of procedures require time and effort, though, so you should weigh that potential hassle against the potential gain of the OS upgrade.

Lastly, we recommend that any users that rely heavily upon the availability of their Mac for work or other productivity consider waiting for several OS updates before making the upgrade. Early adopters inevitably find some shortcomings and bugs which are resolved in minor OS updates.

Related Resources


We take pride in listening to our customers and strive to continually make CCC better. Do you have suggestions, requests, or questions? Just reply to this email and we'll take a look.

/s/ Mike Bombich



(BTW, it's spelled < y'all >.)
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: sekker
Date: November 03, 2020 07:00PM
The Verge is also recommending to wait on Big Sur.
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: NewtonMP2100
Date: November 03, 2020 07:53PM
......so don't send in the clones.....???



_____________________________________

I reject your reality and substitute my own!
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: hal
Date: November 03, 2020 08:07PM
Damn! That sucks.
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: Sam3
Date: November 04, 2020 03:29AM
Already on it. Public beta testing with no major issues (so far) except for a wonky Image Capture.



The arts are not luxuries but assets that give way more than they cost.
--Ronald Tucker on YouTube

A mind is like a parachute. It doesn't work if it is not open.
--Frank Zappa
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: S. Pupp
Date: November 04, 2020 08:42AM
It had to downgrade from Big Sur beta due to kernel panics within a minute of booting.
Catalina and Mohave Time Machine backups were both buggered, so I’m back to High Sierra - and loving it!
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: NewtonMP2100
Date: November 04, 2020 02:06PM
......what if the Big Sir says no.....????



_____________________________________

I reject your reality and substitute my own!
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: FormerlySaleenl
Date: November 04, 2020 02:28PM
Hey, thanks for sharing this. If anyone has questions, let me know!
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: hal
Date: November 04, 2020 06:28PM
Quote
FormerlySaleenl
Hey, thanks for sharing this. If anyone has questions, let me know!

we're big fans around here - feel free to post any CCC news here when you get it.
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: Zoidberg
Date: November 05, 2020 08:38AM
Quote
hal
Quote
FormerlySaleenl
Hey, thanks for sharing this. If anyone has questions, let me know!

we're big fans around here - feel free to post any CCC news here when you get it.

I second that emotion.



(BTW, it's spelled < y'all >.)
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: space-time
Date: November 05, 2020 09:32PM
Quote
Zoidberg
Quote
hal
Quote
FormerlySaleenl
Hey, thanks for sharing this. If anyone has questions, let me know!

we're big fans around here - feel free to post any CCC news here when you get it.

I second that emotion.

3rd
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Re: Bombich (Carbon Copy Cloner) recommends holding off on Big Sur
Posted by: Will Collier
Date: November 06, 2020 04:03PM
I had not heard they'd designated it OS 11. I'd wondered for a long time if Apple intended to make that jump as a genuine paradigm-shift, but clearly the answer is no.
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