Certaines applications refusent de fonctionner après un transfert sur un nouveau disque ou lorsqu'elles sont exécutées sur un autre Mac. Ceci n'a aucun rapport avec la sauvegarde de vos données par CCC et se résume à des contraintes de sérialisation imposées par l'éditeur du logiciel (autrement dit sa stratégie antipiratage).
Dernière mise à jour par 10 March 2023
L'utilisation du disque sur votre disque de démarrage ne reflète pas la quantité de données qui doit être sauvegardée ; l'utilisation du disque sur la destination devrait être inférieure à l'utilisation du disque sur la source après la réalisation d'une sauvegarde initiale de votre disque de démarrage. aperçus de système de fichiers) et certaines données de service macOS ne peuvent pas ou ne doivent pas être copiés sur un autre volume. CCC exclut automatiquement ces éléments pour éviter les problèmes lors du démarrage depuis la sauvegarde et pour éviter l'utilisation inutile du disque.
Dernière mise à jour par 6 December 2022
Configuration files for privileged helper tools are placed in the /Library/LaunchDaemons folder on your startup disk. CCC never touches this folder directly, rather it uses the macOS "Service Management" service to install and load its helper tool configuration. If the permissions or ownership of this folder are incorrect, however, the Service Management daemon (smd) will fail to install the helper tool configuration, and this service offers no recourse. Often the helper tool installation will fail with a nondescript error, e.g. "CFErrorDomainLaunchd error 2".
Dernière mise à jour par 18 December 2023
CCC can run backup tasks while the system is running on battery power, but will not (by default) start automated tasks when your laptop is running on battery power. Backup tasks generate a lot of disk read and write activity, and that can run your battery down. Additionally, macOS tends to aggressively put the system to sleep when it's on battery power, causing task completion to be deferred until the system is awoken.
Dernière mise à jour par 23 May 2023
If you boot your Mac from a backup volume, CCC will be started upon login to ask whether you'd like help restoring from that backup volume. Sometimes, though, this offer is made when you're booted from a production volume, not a backup. CCC makes this assessment based on your currently-defined backup tasks. If you used CCC to migrate from one drive to another, then the task that you used to perform that backup will still be present on your new startup disk.
Dernière mise à jour par 27 April 2021
According to ObDev developers, it is crucial for Little Snitch to avoid unnoticed ruleset changes. Little Snitch therefore has numerous mechanisms to detect whether it is using the exact same ruleset file, as in, on the same volume and at the same physical address on that disk. This sort of mechanism makes it impossible for Little Snitch to use the ruleset on the booted backup volume without physical intervention from a user at the system (thus the dialog asking if it's OK to use the current version of rules or to use a default ruleset).
Dernière mise à jour par 27 April 2021
Note: The topics in this article are not relevant to APFS-formatted destination volumes that have CCC snapshot support enabled. For those volumes, CCC leverages snapshots to implement the SafetyNet functionality, and the snapshots aren't affected by any of the shortcomings described here.
Dernière mise à jour par 3 November 2023
When you configure CCC to back up your startup disk directly to a locally-attached backup volume, that backup is automatically compatible with Migration Assistant. Occasionally people get into this sticky situation though -- "I have a backup of everything in a folder on the backup volume, I have a clean installation of macOS, now how do I get everything back to the way that it was before?"
This situation requires an intermediary restore to a new, empty volume.
Dernière mise à jour par 4 April 2023
No. Copying a Time Machine backup volume with anything other than the Finder is not supported (by us, nor Apple); CCC specifically disallows copying anything to or from a Time Machine backup volume. Apple does not document a procedure for making copies of Time Machine volumes.
Dernière mise à jour par 11 August 2021