The only tricky part of installing a fresh macOS is turning the USB into a bootable installer. I looked around for related questions (e.g., here), and found nothing relevant. Whether you’re looking to install macOS on various devices, or you’re simply looking for a clean new install to overcome some Mac issues, you can create your bootable install manually without too much hassle. It is plugged directly into this mac mini, not through a hub or keyboard. ![]() When I open the "Startup Disk" system preferences dialog, it does not show the USB drive (even though it is mounted). When I boot up holding down the option key, it doesn't show any menu to choose where to boot from, it just ignores my USB drive. ), but I have a USB key with "Mac OS Extended" format and 7.8G of stuff on it. These directions require the DVD media, which my parents likely never had.Īll the directions I've found for bootable USBs require a disk image.Įdit 1: I created a USB drive using these directions, "Option 2: Use Disk Utility." I modified a bit (El Capitan instead of Yosemite, got the BaseImage.dmg by copying and using xattr to remove the invisible bit. I can't use OS X Recovery, that also requires 10.7 or higher. ![]() Not sure how to make a bootable image from the install app in Applications. I tried diskmakerx, but it requires 10.7 or higher. I downloaded El Capitan from the App Store. ![]() So, I need to boot onto something other than the boot drive to run disk utilities. I wish to upgrade from Snow Leopard (10.6.8) to anything higher.ĭisk Utilities repair says the disk needs to be repaired.
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