Use Your PC Hard Drive For Time Machine Backup

Setup Time Machine To Backup On Network PC Hard Drive Automatically  & Wirelessly

Turn your Windows Computer hard drive into a backup disk or simply install extra hard drive in your PC and you can also make backup on external drive for Time Machine backup. Make multiple backups on one hard drive, for example if you’ve 1TB hard drive installed in your PC and you’ve two Mac Machines with 500GB drive each then you just make two backup images with size of 500GB each.

You Can Setup Following Types of Storage Disks for Time Machine Backup:

  1. PC Hard Drive
  2. Mac Hard Drive
  3. External Drive
  4. Portable Disk
  5. USB Disk

1. Open Disc Utility and Create New Image

A: Name; Enter Same Name for File and Image.

B: Size; Select Image Size: Make sure image size is not greater than your backup hard drive, if you get any problem with selecting image size then setup other options first before you setup image size.

C: Format; Mac OS Extended (journaled).

D: Encryptions; 128-bit AES Encryption (recommended).

E: Partitions; Single Partition – Apple Partition Map.

F: Image Format; Sparse Bundle Disk Image.

2- Open Finder and Eject Mounted Disk Image from Sidebar

3- Connect Mac to PC Over Network

A: Open Finder and Hit Command Key+K.

B: Enter PC IP; “smb://Your PC IP Address”.

C: Login and Open Backup Hard Drive.

Step-by-Step Instructions for: Connect Mac to PC

4- Move Disk Image to PC Hard Drive

5- Mount Disk Image by Double Clicking the Image File

6- Open Terminal

A: Type or Paste; “sudo tmutil setdestination /Volumes/MacBookProBackup” and hit enter.

B: Password; Enter User Password.

7- Open Time Machine Preferences and Select Backup Image

At this point Time Machine will start backing up all your Mac data till backup disk image is mounted, and remember you have to manually mount disk image all the times you backup your data, unless you willing to take next step to connect automatically your Mac to PC network hard drive.

8- Connect Mac to PC and Mount Backup Image Automatically

A: Open Automator; Create New App.
B: Grab Following Actions.
C: Get Specified Servers; Add PC IP “smb://Your PC IP Address”.
D: Connect to Servers.
E: Get Specified Finder Items; Add Mounted Image Disk.
F: Open Finder Items; Select Default Application.
G: Save as App.

9- Open System Preferences and Setup Automator App Open at Startup

A: Open System Preferences; Click Users & Groups.

B: Click Login Items; Add Mounting Image  Automator App.

Now Mac will connect PC automatically at startup, if you get any problem or need help you can ask in comment box below, we will try our best to help you with that.


  • Thanks for posting this… this is exactly what I want do… specifically I want to save my MacBookPro backup to a PC Server that I have running in my house… which is then backed up to the cloud. However, after I past the following text into the terminal…”sudo tmutil setdestination /Volumes/MacBookProBackup”

    I get prompted for the password which I enter…

    and then I get an error saying “No such file or directory (error 2) back up destination could not be set.

    Any ideas what I might be doing wrong?

    Which password am I supposed to use in Step 6B?

    What happens if I boot up the MAcBookPro but the server isnt available?

    Thanks so much in advance for any help you can provide!


    • It’s usually happened when Terminal couldn’t locate a disk image on network, most of the time we get this problem because of the “Disk Image Name”, to resolve this problem you can try following steps:
      1. Check disk image name is same as in the command you entering in Terminal, also make sure no spaces in “Backup Disk Image Name”.
      2. If you still get problem then start the whole process again.
      3. Enter your user login password same as your computer password in Terminal on Step 6B.
      If you get any problem, ask in a comment box.
      Good Luck!

  • Great post.

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