I looked around for related questions (e.g., here), and found nothing relevant. 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.
#HOW TO USE DISKMAKERX CREATE A USB INSTALLER FOR MAC HOW TO#
Not sure how to make a bootable image from the install app in Applications. I tried diskmakerx, but it requires 10.7 or higher. Looking at some videos that are a little complicated and dangerous that use terminal to do. But before you install it on your Mac, you may find it useful to create a bootable USB installer. Choose OS X Extended (Journaled) for format and GUID Partition Map for scheme 7.
Before formatting the disk, make sure it’s backed up 5. In the sidebar on the left, click on your disk name 4.
iso file to create a boot-able disk image on a USB flash drive. Mac OS X Yosemite - How To Create A Bootable Install. Open Disk Utility by following Applications Utilities Disk Utility 3.
I downloaded El Capitan from the App Store. I have a Mac OS X Tiger.iso disk image file on my desktop that when you open it creates a OS X install DVD image. 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.