Can a mac boot from an external drive, if the external drive is running an older version of macOS?
69028
Can I downgrade to macOS Mojave if I buy the new 2019 MacBook Pro?
91274
How critical are macOS Mojave compatibility requirements?
29181
Filesystem to use for external hard drive to be used with Mac, Linux and Windows machines
22353
How do I boot from my Mac partition?
26393
Boot Ubuntu from external drive
76119
Can I boot Windows 7 on a USB drive attached to by MacBook Pro? If so, how?
22323
Install macOS Sierra on VirtualBox?
117388
Do I have an SSD and a hard drive on my MacBook Pro?
132442
How to install Ubuntu as the single OS on a MacBook?
102362
Install older OS X on latest Mac Mini
134561
Is it possible to run Snow Leopard on a LATE 2011 MacBook Pro?
60077
Fresh install Mac OS Sierra and MacTeX
66221
How do i install OS X on new hard drive? I have macbook pro mid 2010.
110943
Why do I get 'HDIO_GET_IDENTITY failed' message when booting with external usb hard drive?
46437
install Ubuntu on a Mac book single boot
12170
How do I make a bootable USB OS X installer on a Mac?
155087
Create a Bootable Windows USB from a OS X to work on a PC