Here are the steps I took to create the bootable USB drive (I have a Mid-2014 MacBook Pro with Retina Display): Downloaded the latest OS X El Capitan (10.11.3) from the Mac App Store. Created a bootable USB drive using createinstallmedia (as explained in Apple’s documentation) and it went well. Erased Macintosh HD. Tried booting from USB drive. Step 3: Now the USB Drive is ready for OS X El Capitan installation. Make sure the copy of “Install OS X El Capitan” is there on /Applications folder. Bootable USB Installers for OS X Mavericks, Yosemite, El Capitan, and Sierra First, review this introductory article: Create a bootable installer for macOS.
Created a bootable USB with El Capitan installer
booted from it, erased my MBP (mid 2009), clean install from USB installer
decided to use migration assistant, most apps not working plus all the clutter from pre clean install
decided to do another clean install but MBP won't boot from USB and uses the recovery version instead.
tried to get Maverick back and basically ended up with a non-working MBP that went into a boot loop
did a reinstall from MAS, ended up DLing the entire Installer again, went to bed and in the morning and 'working'
MBP again, plus all the clutter and non working apps.
Made a new bootable USB key using terminal and yes it finished and yes it said bootable at the end as well as in Disk Utilities.
However when trying to boot from USB, start+Option, or start+cmd+r still no sign of the USB stick, which i guess would leave me
with a non clean install again.
Any help, suggestions.....?
Make El Capitan Bootable Usb
/Boot-Menu-56aa12045f9b58b7d000b2f2.jpg "Create bootable usb el capitan without terminal")
Bootable Usb El Capitan Disk Utility
Cheers
Ralf
MacBook Pro (13-inch Mid 2009), OS X El Capitan (10.11)
Bootable Usb El Capitan
Posted on Oct 4, 2015 7:57 AM