How to access the BIOS and adjust the boot order if your system will not boot from an external DVD drive.
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How to use an external dvd drive with a Mac laptop that has an internal DVD drive | Jonny Elwyn - Film Editor
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Amazon.com: UHNDY External DVD Drive, USB 3.0 CD DVD Burner for Laptop, Type-C CD/DVD ROM +/-RW Optical Disk Drive with 4 USB Ports and 2 SD Card Slots, Ultra Slim, for Mac,
![How to use an external dvd drive with a Mac laptop that has an internal DVD drive | Jonny Elwyn - Film Editor How to use an external dvd drive with a Mac laptop that has an internal DVD drive | Jonny Elwyn - Film Editor](https://i0.wp.com/jonnyelwyn.co.uk/wp-content/uploads/2014/12/Making-Supedrive-work-on-macbook-pro.png)