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Apple Time Machine Recovery Mode and T4 RAID

Apple Time Machine Recovery Mode and T4 RAID

  • Products Affected

Summary: The purpose of this tutorial is to demonstrate how you can restore the entire Mac OSX from a T4 RAID backup through Time Machine recovery mode.

Apple’s Time Machine is a great tool to back up your files, and even an entire OS, to an external storage such as the CalDigit Thunderbolt T4 RAID.

When restoring an entire OSX, one would require to restart the computer and login to Apple’s Recovery Mode, which has no third party device driver installed other than Apple’s inbox drivers. Thus, restoring OSX from third party storage may require extra steps. Below shows the steps to restore OSX from a T4 RAID:

A. Preparation:
1. Prepare a USB flash drive or any external storage. In our example, we call this USB disk volume: CAL1
2. Assume your current working OSX already has the CalDigit T4 RAID driver installed. You can copy the driver file located in:

/Library/Extensions/CalDigitRAID.kext

to your USB disk.
3. Plug in this USB flash disk to the computer that you want to restore.

If you do not have this driver file or have no way to access it while your system is down, please obtain this file from the CalDigit Support Team. (support@caldigit.com)

B. Login to Recovery Mode:
4. To start your computer from Recovery, restart your Mac and hold down the Command + R keys at startup.

C. Copy and Load CalDigit RAID Driver from Terminal mode:

5. Once you are in Recovery Mode, launch the “Terminal” from “Utilities” menu.

"Terminal" selected from the "Utilities" menu.

6. In Terminal mode, type in the following commands in order to copy CalDigitRAID.kext to the Recovery Mode system folder:

mkdir ~/Library/T4R
cd /Volumes/
cd CAL1
cp -r CalDigitRAID.kext ~/Library/T4R
kextload ~/Library/T4R/CalDigitRAID.kext

The first line command is to make a temporary folder (called “T4R”) in recovery mode. The second and third commands are to navigate to the USB flash disk that you have prepared back in Step 1. The fourth command is to copy CalDigit RAID driver to the temporary folder. The fifth command is to load the driver in recovery mode.

You will need to hit enter after each command.

All commands copied to the Recovery Mode system folder in order, as mentioned in Step 6.

7. Then quit Terminal program from the menu bar.

"Quit Terminal" selected from the menu bar.

D. Verify and Restore from T4:

8. You can launch Disk Utility from the menu bar to verify if the T4 RAID can be recognized after loading the driver. Then quit Disk Utility.

T4 RAID recognized and appearing in the Disk Utility window.

9. Now, select “Restore From Time Machine Backup” from the OSX Utility Window.
10. Select T4 RAID as the Time Machine source disk and the target disk to process restore.

"T4 RAID" selected as the Time Machine source disk.
"Macintosh HD" selected as the target disk to process restore.
Image depicting Restoring progress bar.

Additional Information:
OS X: About OS X Recovery
Mac Basics: Time Machine backs up your Mac

CalDigit Support is ready to assist you.
For an optimal experience please have your product name, serial number, and operating system on hand prior to contacting support.

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