![]() So what’s the preferred transfer method for 10.4 and later? If that’s the case, you’ll want to use Carbon Copy Cloner, simply for its handling of the Recovery Partition (among other Lion-specific issues) as well as being able to intelligently skip many unnecessary files. And if your installer discs don’t mount or are missing, it’s your only option. In OS X versions prior to Tiger, cloning also the only way to reliably bring your data over from a previous installation. Personally, I’ve got Carbon Copy Cloner set to run twice daily on my main drive, so that if something happens, I have a backup and continue forward with relatively little data loss. That makes it a great way to produce a bootable backup for use in an emergency if your drive goes down. What’s cloning good for, then?Ĭloning makes an exact snapshot of a volume at a point in time. However, if you’re using any other method to clone your drive, the only reliable way to create a new recovery partition is through a fresh installation. If you’re using Carbon Copy Cloner to clone, there is an option to make a copy of the recovery disk, and it seems to work quite well for an emergency. This is something we brought up last August, and it’s still relevant now. What’s more, there’s something that definitely doesn’t get transferred over in a basic clone: the Lion Recovery Partition. It can also leave important stuff behind. If you’re cloning to a smaller drive than your original (sometimes this happens when switching to a solid-state drive from a platter-based one) this extra data being brought over could result in some (more relevant) data not being copied. So you wind up bringing a lot of files over that you don’t have to. Unfortunately, cloning doesn’t easily let you remove these files. Some cloning apps, like Carbon Copy Cloner, can let you pick and choose certain directories and/or automatically skip other unneeded ones, but that’s not a universal feature. There are also apps that reputedly can clear many of these files out, or you can always go in there manually. However, both methods usually wind up missing many of these files. Installing a new drive is the perfect opportunity to get rid of many of these files. These are things like preference files for apps you’ve deleted, the apps themselves, and miscellaneous cache files. The problem is that the actual clone brought over 184GB of data! And he’s not the only one this has happened to there have been numerous reports of people doing the same thing and having similar results – even after connecting to their Time Machine drive.Įven if you’re not running Lion or later, there are still a lot of files on your hard drive that you don’t need. After removing the iTunes and iPhoto libraries, the drive reported 53GB of data to transfer. Recently, one of our staffers tried cloning over a notebook to a new drive. The problem is that it doesn’t always work that way. Then, when you reconnect, it transfers the data over and deletes it from your internal drive. ![]() If you need more space in the “visible” portion of the drive, the OS deletes the older backups. When your Mac laptop isn’t connected to your Time Machine drive, it still keeps track of changes and saves them to a hidden folder on your hard drive. One of the infrequently-mentioned additions to Lion was “MobileBackups,” which is is effectively internally-saved Time Machine backups. Well… maybe not that second one anymore… Cloning can bring over stuff you don’t want. It’s great for performing backups and makes transferring your system to a new drive a snap… Cloning… it’s a time-honored way of transferring all your system files from one drive to another and ending up with a bootable copy identical to the original.
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