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  • A bug in macOS 10.15.5 impacts bootable backups

    Posted on Alex5723 Comment on the AskWoody Lounge

    Home Forums AskWoody support Non-Windows operating systems macOS A bug in macOS 10.15.5 impacts bootable backups

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      • #2266874 Reply
        AskWoody Plus

        Carbon Copy Cloner developer :

        “Early last week we discovered an APFS filesystem bug in a beta of macOS 10.15.5. The technical details of the bug are laid out below, but the short version is that we’re no longer able to use our own file copier to establish an initial bootable backup of a macOS Catalina System volume. To be very clear – existing backups are unaffected, and this has no effect on CCC’s ability to preserve your data, nor any effect on the integrity of the filesystems on your startup disk or your backup disk. The impact of this bug is limited to the initial creation of a bootable backup.”

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      • #2267389 Reply
        Nathan Parker

        I can confirm that SuperDuper is affected by this as well.

        Even though I use SuperDuper, I went ahead and updated and paused auto backups for now, since I needed 10.15.5 to resolve the file copy issue from 10.15.4.

        Hoping Apple doubles down in quality control is 10.16. We need another “Snow Leopard” release.

        Nathan Parker

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    Reply To: A bug in macOS 10.15.5 impacts bootable backups

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