Connect AirPort Extreme (or Time Capsule, I suppose) to Mac via ethernet.Ĥ. Do not connect external Time Machine drive directly to Mac.ģ. Although theoretical max should have been 1 GB/s over USB-C and ethernet, I saw only 10 MB/s, probably because the USB-A Seagate to AirPort connection couldn't support a higher speed.Ģ. Took about 8 hrs to make it through the ~600 GB. Finally, the restore worked after I dropped down into the back-up hierarchy rather than selecting the very top level, and chose the back-up folder at the specific time point. (And to make matters worse, of course I had to go out to buy a USB-C to ethernet adapter because, well, the ridiculous 2019 MBP port configuration.)ħ. Again, no joy - got the spinning wheel and no progress. This too seemed to start off just fine until I got to the part where I had to select the back up file in Migration Assistant. After 3 calls to Apple Support and several hours of pondering (following the 3 days of waiting for the original restore to complete over the air), I finally tried to again do a wired restore but now using an ethernet connection from the AirPort Extreme to the Mac rather than plugging the Seagate in directly. And indeed it looked good for a while, as I was now able to see the list of the backup timepoints and to select the one that I wanted, but then the same message popped up, telling me that I must re-install the OS and use Migration Assistant to transfer the data! And of course that put me back into the same aggravating loop.Ħ. I then decided to do the CMD-R bit, hoping that the restore utility would do the trick. blank screen where a list of the available backups should be.ĥ. However, Migration Assistant, once I was able to get there, produced the same problem, i.e. At this point I decided to use Migration Assistant rather than Setup Assistant, but to do that, I had to set up the machine as new. Every time I'd advance to the screen where one selects the actual backup to restore from, its contents would appear blank.Ĥ. Plugging the Seagate directly into the Mac seemed to work fine, in that the drive mounted and the backups were recognized (there are 3 different ones on that drive), but I couldn't initiate the restore. At that point, I wasn't about to restart that whole process, and tried a wired restore.ģ. The Setup Assistant started just fine over the air (stupidly, I forgot how long this would take for >600 GB) and ran for about 3 days until it froze almost 70% in. My Time Machine configuration is a Seagate external drive connected to an AirPort Extreme. Attempted to set up a new 16" MacBook Pro from a Time Machine backup of a mid-2015 MBP that unfortunately no longer functioned, so a computer to computer transfer wasn't possible.Ģ. I'll describe my course of events in the hope that it may be of use to someone:ġ. It appears that it is no longer possible to do what you'd tried. Thanks for any help or guidance you can provide. (For reference purposes, this is how I used to proceed: ) (FYI: I have experienced the exact same behavior on my late 2014 iMac which is still running Big Sur 11.1.)Īm I understanding this correctly that one can no longer restore a full backup (system + data) in one shot (as I did a number of times in the past using previous macOS versions) but shall first reinstall macOS and then use Migration Assistant to restore files? Reinstall macOS if necessary and then use Migration Assistant to transfer data from your backup. « You must use Migration Assistant to transfer data from this backup. In the « Select a Backup » window: Selected the desired backup from the list and clicked « Continue ».Entered my LaCie drive password (backups are encrypted) and clicked « Continue ».In the « Select a Restore Source »: Selected my LaCie external drive from the list and clicked « Unlock ». In the « Restore from Time Machine » window: Clicked « Continue ».Selected « Restore from Time Machine » and clicked « Continue ».I am desperately trying to restore a Time Machine backup stored on my (LaCie d2 Thunderbolt 3 10Tb) external drive to my (2019) iMac running Big Sur 11.2.
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