Since the first appearance of macOS Catalina 10.15.5 back in May computer backup programme Carbon Copy Cloner and Super Duper have been ineffectual to create bootable backups due to a bug in macOS .
For Carbon Copy Cloner there was a workaround uncommitted in edition 5.1.18 , while for Super Duper it was necessary to touch the developer to ferment around the job .
Now , with the arrival of macOS Catalina 10.15.6 , Apple has lastly fixed the hemipteron . Super Duper works again as it should , and there is an update for Carbon Copy Cloner ( version 5.1.20 ) .
Our original story from 29 May 2020 follows :
macOS 10.15.5 has fixed some problems but it appears it has create others . The developer behind a backup pecker is let down that the tardy update to macOS Catalina is cause problems for customers using his backup tool .
Mike Bombich , the developer behind Carbon Copy Cloner – the democratic pecker for creating backups and bootable system copies – says the latest Catalina update to version macOS 10.15.5 causes major problems with backups .
A organization copy create with an older version of CCC is no longer bootable and does not come out to contain any information . fit in to Bombich , this is due to an obvious hemipteran in the current version of macOS . The bug had already occurred in the beta translation of 10.15.5 but was n’t address prior to release .
The problem seems to be that in order for a new created arrangement copy to boot , the backup tool must change a so - called flag of a folder with the system call chflag . However , if you want to determine the “ SF_FIRMLINK ” sword lily , this will fail for an APFS folder under macOS 10.15.5 . There is no mistake message , which pretend it difficult to find the error . Without this flag , which activates so - called firm links , the organisation transcript is neither bootable nor does it appear to contain the saved information .
Luckily if your backup was created under an older version of macOS will rest bootable .
A new beta version of Carbon Copy Cloner that enables the creation of bootable copies under macOS 10.15.5 has already been made available . This version – beta 5.1.18 – apply Apple ’s ASR creature in the background instead of the backup locomotive engine previously used . ASR is currently the only programme that can create bootable system copies .
For Bombich this is only an emergency solvent , since the peter bid fewer functions and is more prone to erroneousness than his self - develop computer software . Other third - political party backup programs such as Super Duper may also be affected by the job .
The developer , who has already inform Apple about the error , is quite upset that such an obvious system error could go on in what is , after all , the 5th Catalina update . “ It ’s hard to find kind word to express my tactile sensation towards Apple properly now . Suffice it to say , though , I ’m extremely disappointed that Apple would introduce this variety of germ in a dot - press release OS update . ”
According to Bombich , Apple did not intend to introduce young restrictions for backup computer software , it was merely an fault .
In summation to introducing this bug themacOS Catalina update amend battery wellness and fixes a Finder clang bug . Find out about theproblems and take with Catalina as well as the new feature here .
This article in the first place come out onMacwelt . Translation by Karen Haslam .
