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2012 13" MBP won't boot from El Cap USB stick

G

germinator

macrumors 6502
Original poster
Apr 22, 2009
292
243
I just bought the 2012 model 13" MBP. Replaced optical drive with Samsung SSD. Installed El Cap. Everything works great.

Now I wanted to have a bootable USB stick for recovery. Followed directions here to create Bootable El Capitan installer disk:
http://osxdaily.com/2015/06/11/make-bootable-os-x-el-capitan-beta-install-usb-drive/

Except I used El Cap's version of Disk Utility.

When I reboot with Option key down, I am presented with the selection of boot drives including the USB disk. If I select it, I can see the progress bar for a while, but before reaching the end of it, I get the ghostbusters sign.

Any ideas?
 
germinator said:
I just bought the 2012 model 13" MBP. Replaced optical drive with Samsung SSD. Installed El Cap. Everything works great.
Now I wanted to have a bootable USB stick for recovery. Followed directions here to create Bootable El Capitan installer disk:
http://osxdaily.com/2015/06/11/make-bootable-os-x-el-capitan-beta-install-usb-drive/

Except I used El Cap's version of Disk Utility.
When I reboot with Option key down, I am presented with the selection of boot drives including the USB disk. If I select it, I can see the progress bar for a while, but before reaching the end of it, I get the ghostbusters sign.
Any ideas?
Click to expand...
Try again using these instructions:
http://arstechnica.com/apple/2015/0...able-os-x-10-11-el-capitan-usb-install-drive/

Diskmaker X v5 is a good easy way to make a bootable USB installer.
 
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