Furthermore, why does Apple Time Machine take so long?
That's because Time Machine is designed to work quietly and slowly in the background. Most of your regular backups are incremental and therefore don't need much power. If you only back up your Mac once per week (or longer), Time Machine has a lot more work to do, but still runs quietly and slowly in the background.
Secondly, how long should my first time machine backup take? Once the first backup is complete, Time Machine checks your Mac for new, changed, and deleted files once every hour. Time Machine keeps these hourly backups for the past 24 hours, then keeps a daily backup for the past month.
Accordingly, how long does it take to restore Mac from Time Machine?
My last restore predicted about 20 hours (for about 300GB to restore to a standard hard disk), and I was surprised when it later changed its mind and predicted completion in a couple of hours. if you get no prediction at all within an hour or so, I would guess that something else is wrong.
How does Apple Time Machine work?
When Time Machine is turned on, it automatically backs up your Mac and performs hourly, daily, and weekly backups of your files. When you use Time Machine, Time Machine also saves a local snapshot you can use to recover previous versions of files, even if your backup disk is not attached.
