Mac mini boot osx from usb

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Yes RayofCommand, after you release alt-cmd-P-R the machine goes on booting from whatever boot partition was selected, as usual. I don't think a white mini will boot from USB, but you could connect it to another Mac thru a Firewire cable, boot this white mini holding the T key "target disk mode" : the mini's internal hard disk will be mounted on the other mac's desktop.

From there you can wipe the disk with Disk Utility. After that, the problem is installing an old version os OS X on the disk Then start the mini with alt pressed and boot from this partition, install on the other bigger partition. Hope this helps.

How to clean install OS X on your Mac/MacBook Pro/Air?

Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 1 year, 7 months ago.

Active 1 year, 7 months ago. Viewed 7k times. RayofCommand RayofCommand 1 1 gold badge 3 3 silver badges 9 9 bronze badges. Is this an erase and install situation or do you want to install over top of the data and programs? Would like to erase first. I resetted an old mac book pro last week without issues but date update haha. The boot order tells the machine which devices to search for the software needed to launch the computer and the priority each device in that search.

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Otherwise the computer will load from the hard drive as normal. Start by plugging the thumb drive into a USB port. Then t o change the BIOS boot sequence :. In the future, your computer will first check the USB port for boot media when starting up. Then the system will launch from that device every time.

Regardless of the operating system you are using, booting your machine from USB media does not need to be difficult. A general understanding how your system loads can provide the basics needed to understand what is going on when you use boot media. It provides guidance that is specific to the iteration of OS X you are running i.

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Sierra, High Sierra, Yosemite, etc. Windows and Linux users might consider Acronis Disk Director 12 , which includes an intuitive Boot Media Builder that streamlines the process and offers tremendous flexibility for the type and kind of boot media you can create, including WinPE media. Jeff Benjamin. This hands-on tutorial will work with both the macOS Catalina developer beta, the macOS Catalina public beta , and the final version of macOS Catalina scheduled to launch later this fall.

Follow our easy-to-use step-by-step video tutorial for the details. The drive comes in 16, 32, 64, , and GB storage varieties.

How to select a different startup disk

If you want a drive with extra storage, then it makes sense to opt for a higher tier, but if you just plan on using it as a USB installer, then 16GB should be plenty. Thanks to CleanMyMac X for sponsoring this video. Subscribe to 9to5Mac on YouTube for more videos.