I have a backup created by another application or an older version of CCC. Can CCC update my existing backup?

Product: 
ccc6

CCC always examines the files on the destination to determine if they already match those on the source. If you have a volume that is virtually identical to your source, CCC will copy only the items that are different between the two volumes.

Frequently asked questions about the CCC SafetyNet folder

Product: 
ccc6

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.

I have a full-volume backup in a folder or a disk image, but I don't have a bootable backup. How can I restore everything?

Product: 
ccc6

CCC makes bootable backups specifically to avoid this kind of situation. When you have a bootable backup, you simply boot from that, then restore everything to a replacement disk or the original disk. One step, minimal time, couldn't be easier. Occasionally people get into this sticky situation though -- I have a backup of everything in a disk image or in a folder on the backup volume, there's a clean installation of macOS on my replacement disk, now how do I get everything back to the way that it was before?

Frequently Asked Questions about encrypting the backup volume

Can I run a backup while I'm using my computer? If I have open files, will they be backed up?

Product: 
ccc6

Generally, yes. Performance will be affected during the backup task (especially the first one) as CCC reads the entire source volume and writes to the destination volume. If your work is "disk bound" — that is your applications are reading or writing to either the source or destination, then you'll notice a performance hit. If you're just reading email or writing a document, then you probably won't notice the performance hit.

Preguntas frecuentes sobre CCC y macOS 11

Product: 
ccc5

Con la introducción de macOS Big Sur, Apple ha dejado atrás Mac OS X (10) y lo ha sustituido por macOS 11. Como sugiere este cambio numérico, se trata del mayor cambio a macOS desde que Apple introdujo Mac OS X aproximadamente 20 años. Ahora, el sistema reside en un «volumen System firmado», que está sellado criptográficamente. Dicho sello solo lo puede aplicar Apple; las copias ordinarias del volumen System no pueden usarse para arrancar el equipo sin contar con el sello de Apple.

Preguntas frecuentes sobre CCC y macOS Catalina

Product: 
ccc5

Si ha instalado la actualización a macOS Catalina, puede que haya visto un nuevo volumen en el Mac llamado «Macintosh HD - Data». Este nuevo volumen forma parte de un grupo de volúmenes, que es un nuevo concepto introducido en macOS Catalina. Hablamos aquí en detalle de los grupos de volúmenes, pero el resto del artículo intenta responder sus preguntas sobre el modo en que CCC gestiona esta nueva estructura de volúmenes y qué debe hacer, si fuera necesario, para ajustar sus copias de seguridad para macOS Catalina.

Why does CCC say that my Mac is booted from a backup volume?

Product: 
ccc5

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 clone will still be present on your new startup disk.

La carpeta SafetyNet antigua no se usa cuando se activan las instantáneas en el destino

Product: 
ccc5

SafetyNet es una función única de CCC que intenta proteger los datos de sus volúmenes de destino. El caso más habitual para el que se diseñó esta función es proteger el contenido de un volumen seleccionado como destino sin prestar atención a lo que contenía. En lugar de eliminar de inmediato el contenido de ese volumen, CCC lo guarda en una carpeta llamada «_CCC SafetyNet». Si luego se da cuenta del error, puede recuperar los archivos de la carpeta SafetyNet y corregir la configuración de su tarea de copia de seguridad.

System problems can lead to a failure to install CCC's helper tool

Product: 
ccc5

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, nor even a notification that something is wrong that should be corrected.