How long does it take to backup Mac to external hard drive?
Check for large, frequently updated files

Backing up such files can be time-consuming, and Time Machine backs them up every time it sees that the file has changed. You can find large and frequently accessed documents on your Mac, then choose whether to exclude such files from your Time Machine backup.If you're backing up massive numbers of files, folders, and applications, then first-time, initial backups have been known to take up to 18 hours. So don't be alarmed if you've just started a backup and you feel like it's taking too long.From the Apple menu  in the corner of your screen, choose System Settings. Click General in the sidebar, then click Time Machine on the right. Click Add Backup Disk, or click the Add button (+). Select your connected storage device and click Set Up Disk.

Why is my Mac stuck on preparing backup : Mac's Time Machine could be taking long to prepare a backup for any one of the reasons below: Your backup drive is damaged or outdated. macOS is outdated. Your files are too big.

Why is my Apple backup taking so long

If your iCloud backup is taking longer than expected to complete. In iOS or iPadOS, go to Settings > Wi-Fi. Check that you're connected to Wi-Fi. Check your upload speed.

Why is my hard drive backup taking so long : If the backup does not progress quickly, the cause is either (or all) the backup source's PC side, the backup destination's external HDD, or the data transfer speed. For example, the backup may not progress because there is too much data or installed software on the PC side.

Speeds are slower than download speeds, a quick calculation will probably show that your backup would still complete in a reasonable amount of time if size and speed were the only impacting factors. At 5Mbps, for example, 100GB should take about 48 hours to backup. A terabyte backup would take less than three weeks.

You can continue using your Mac while a backup is underway. Some Mac computers make backups even when asleep. Time Machine backs up only the files that changed since the previous backup, so future backups will be faster.

How do I backup my entire Mac to an external hard drive disk Utility

Here's how to backup your Mac with Time Machine:

  1. Open Disk Utility, then select your external drive.
  2. Click the Erase button to format it, choosing the Mac OS Extended (Journaled) format.
  3. Open Time Machine from the System Settings app.
  4. Click Select Backup Disk.
  5. Select your external drive, then click Use Disk.

You can continue using your Mac while a backup is underway. Some Mac computers make backups even when asleep. Time Machine backs up only the files that changed since the previous backup, so future backups will be faster.Check the backup disk with First Aid from Disk Utility. If Time Machine can't create a snapshot, your internal disk may be almost full. Deleting some files can resolve this issue. If Time Machine shows a message that the disk is full, you can exclude files from the current backup or use a larger disk.

How long does it take to backup an iPhone Normally, it takes from 30 mins to 2 hours to back up your iPhone. The process depends on different conditions, such as: how full is your iPhone storage: if there is almost no GB left, your backup might take ages or even never happen.

How long does it take to backup to external hard drive : Your initial backup, depending on how many pictures and files you have on your computer, may take anywhere from a few hours to several days.

How long does it take to backup 500 GB : Solution:

Connection Type Upload Speed Upload 500 GB
T1 1.5 Mbps 33 days
Cable/DSL(fast) 5 Mbps 10 days
Fiber Optic 10 Mbps 5 days
T3 45 Mbps 1.1 days

How long does a 200 GB backup take

A 200 GB system has taken 2-3 days, in my experience. Check out Easus Todo Backup. Additionally, only the initial backup must be a full backup (recurring about once a month). After that, you can use incremental backups for your daily and weekly backups.

What is “Power Nap” Power Nap allows your Mac to perform useful activities while it's asleep (there are plenty of activities that it will do but the important one we'd like to focus on today is the Time Machine backup).Even though Time Machine creates local snapshots on computers using APFS, it's recommended that you back up your files to a location other than your internal disk, such as an external hard disk, a disk on your network, or a Time Capsule.

Does Time Machine back up everything : This is also another really good question, and the short answer is yes. Unless, of course, you've excluded users or certain files, Time Machine will backup pretty much everything.