Sequoia 15.2 and Carbon copy cloner

Shirt Pocket (Super Duper!) today posted this warning, that macOS 15.2 breaks system copying.


So, may I ask: has anyone both updated to 15.2 AND successfully run Carbon Copy Cloner, please: or does CCC also fail?


TIA…!

iMac Pro, macOS 15.1

Posted on Dec 13, 2024 3:16 PM

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Posted on Jan 2, 2025 1:33 PM

I believe the CCC warning is related to the Legacy Bootable feature. The normal backup works fine in Sequoia.


CCC's legacy works fine with Intel Macs but not with Silicon Macs.  The following is what Rob of Bombich Software told me as a way to clone my internal boot drive on a Silicon Mac to an external SSD:


1 - Boot into Recovery Mode

2 - Erase the external disk in Disk Utility

3 - Install macOS on the external disk

4 - When the installation has completed, accept the offer to migrate data from your original source disk


It worked like a charm and I use it to run beta Sequoia updates.    


Until Apple fixes the replicator in Sequoia We'll have to clone as above.


52 replies

Dec 13, 2024 5:30 PM in response to tbirdvet

Thank you, @tbirdvet - seems promising, doesn't it.


When you installed Sequoia, was that 15.2 from an earlier version of Sequoia, or from macOS 14 or earlier?


I still have an Intel iMac… waiting for M4's (next year, now, presumably).


From that post by Shirt Pocket, do you think I'd be unlikely to need or miss the partitions that are failing for SuperDuper! on 15.2?


Could I just run CCC per this page?


It's the fact that SuperDuper! seems to abort no matter what that worries me.

Dec 15, 2024 10:43 AM in response to Old Toad

Old Toad wrote:

Thanks for the info. I didn't see the Smart Update option in Version 3.8. It asked me if I wanted to upgrade to 3.9. May have to. I'll see what happens with 3.8.

I think Smart Update is only available in SuperDuper in the paid up version. I don't think the free version does Smart Updates but I'm not sure because I use only paid up versions. By the way, my version is 3.9.1. It's inexpensive and I feel I should pay in order to enable small companies to continue to produce such helpful products.

Dec 15, 2024 12:24 PM in response to steve626

Great. Thanks, Steve!


I'm now 99% sure that I can safely upgrade from 15.1.1 to 15.2. Shall wait to hear from Mike, I hope tomorrow.


But as a by-product of all the information posters have kindly offered here, I obviously need to adjust my expectations for bootable clones (to not doing them).


I've obviously lived with CCC doing what it does so well for years now. But to read Dave's description of SuperDuper! aborting was disturbing.


Again, appreciated…

Dec 28, 2024 6:43 PM in response to Mark Sealey

I want an alternative to Time Machine, that will also copy my external drive I use with my new M4 mini. I'm using an 2 TB external for my music, photos and most of Logic projects, with the home folder staying on the internal drive.


I've always used Time Machine and Superduper, but with Superdupers current issues, I'm considering CC.


I looked at their website, but I don't understand the CC upgrades from one version to the next.


What happens with CC when a new Apple OS comes out, or an incremental update like 15.2? Do older CC versions usually stop working well Or do you need a new SuperDuper version each time Apple upgrades its OS? Is it just new CC features you'd be missing if you don't upgrade?


Dec 28, 2024 8:43 PM in response to smokestack salmon

smokestack salmon wrote:

I want an alternative to Time Machine, that will also copy my external drive I use with my new M4 mini. I'm using an 2 TB external for my music, photos and most of Logic projects, with the home folder staying on the internal drive.

I've always used Time Machine and Superduper, but with Superdupers current issues, I'm considering CC.

I looked at their website, but I don't understand the CC upgrades from one version to the next.

What happens with CC when a new Apple OS comes out, or an incremental update like 15.2? Do older CC versions usually stop working well Or do you need a new SuperDuper version each time Apple upgrades its OS? Is it just new CC features you'd be missing if you don't upgrade?

OFTEN (but not EVERY time) when there is a new version of MacOS you need to use an updated version for both of CCC or SD.


Both CCC and SD developers recommend against using their products to create a bootable clone. They suggest separately installing the OS on the clone drive and then using the clone software to update the user files on the clone, as often as needed.


Either CCC or SD can easily clone an external drive. Just specify that drive as the source drive and provide a blank target drive. We do not all the time in a photography business I work with. Once "cloned," if the source drive is modified, you can do an incremental update to the clone with either CCC or SD. We are constantly cloning those drives with photo files, often they contain original image files from weddings, etc., those are priceless and just cannot be lost, so keeping multiple "clones" for us protects against drive failures, mishaps, human error, etc.

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Sequoia 15.2 and Carbon copy cloner

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