Helping You make Live Linux Boot from USB since 2006 Resulting in your own custom personalized bootable diagnostic tool kit that you can put on a keychain or carry in your pocket. Multibooting allows you to store and run several Linux operating systems, Windows installers, Windows to Go, Windows PE, system diagnostic utilities, antivirus scanners, penetration testing, cloning tools, backup tools, and more, all from the same removable device. You can also Boot Multiple ISO files from a flash drive or micro sd card by using Multiboot Installer tools like YUMI to create a Multisystem UFD. Take your portable operating system with you to run at any computer that can boot from a USB device.

On newer Macs from 2019(*) with the Apple T2 Security Chip, you may need to change the SecureBoot settings for MemTest86 to boot.Boot and run your favorite operating systems and CD tools from a USB drive.

When finished, Reboot your On a Mac, you need to hold down the ALT / Option key on the Mac keyboard while powering on the machine to boot from USB.

Total and compete data loss from your hard drive, if you overwrite the wrong drive. The consequence of picking the wrong drive are potentially disastrous. Warning: all data on the USB key will be lost.ģrd warning! Make sure that the device used in the dd command above is correct. is the file path for the input image file. dev/disk2) not a partition designation (ie. is the device the USB key is assigned to. Note: For Ubuntu, the bs= 4M must be capitalised.

As the root user, use the 'dd' command to write the image to the USB drive.

In the example above the device name is /dev/disk2

Unmount all volumes on the USB drive by typing the following command:.

Don't get this wrong as you don't want to overwrite the wrong drive.

Determine which device the USB drive is assigned as by opening the Terminal and typing the following command.

Warning: The contents will be overwritten in the next steps.

Insert a USB flash drive into a USB slot.

For the free edition of MemTest86, this file is called, memtest86-usb.img

Inside the Zip there is a 'disk image' file.

Download the current Memtest86 package as a Zip file from this page.

Creating a MemTest86 bootable USB Flash drive in Linux/Mac

Linux from usb flash drive mac