How to Set Up a New Backup Volume for Apple Time Machine: Simple Instructions

Last Updated on April 19, 2024 by Freddy Reyes

The following are some simple instructions to set up a new backup volume from scratch and have Apple Time Machine recognize it:

♦ Find your machine name (machine_name) and run the following command in Terminal (in this example we’re creating a 250GB partition):

hdiutil create -size 250G -fs HFS+J -volname ‘My Backups’ -type SPARSEBUNDLE machine_name.sparsebundle

♦ The output should be something like machine_name.sparsebundle under your user’s home directory.

♦ You will need to find your hardware UUID in the System Profiler.

♦ Create a file (using your text editor) and name it TimeMachine.MachineID.plist and add your machine’s UUID to it.

Here is an example of the file content:

<?xml version=”1.0″ encoding=”UTF-8″?>
<!DOCTYPE plist PUBLIC “-//Apple//DTD PLIST 1.0//EN” “”>
<plist version=”1.0″>

Save the file and copy it to the machine_name.sparsebundle package.

cp machine_name.sparsebundle/

♦ Copy machine_name.sparsebundle to the root directory of your backup disk.

♦ Start Time Machine disk configuration. Your new disk should appear there and TM should be able to use as a backup up disk.