So, please what bootloader did you use to get El Capitan running?
Mount of outer dmg failed
sudo su
This partition map modification would make a Windows partition unbootable. Quite the installer to restart your computer
I am having trouble installing MAC OS X El Captitan on my Probook 4740s dual boot (Yosemite + Windows 8.1).
I tried to create USB installer using terminal createinstallmedia command method. But I am keep getting error.Code:Mount of outer dmg failed
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Installation began, but then I got the error.
[/COLOR]View attachment 144328Code:This partition map modification would make a Windows partition unbootable. Quite the installer to restart your computer
boot from usb, re run PBI making sure you select correct options.
failing that, plug in an external monitor and do the same..
USB is 16gb 3.0 Kingston.Make sure your USB is large enough (8GB or 16GB), is MBR, and the CLOVER EFI partition is 200mb (no larger).