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E7270: Help installing El Capitan


aufannada
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Hi Jake, now I'm trying to install El Capitan on the same laptop, Dell Latitude E7270 Core i7 DW1830. I use the same EFI that was successfully used in installing High Sierra. But when the USB installer is used to install, the thing that appears is: This version of Mac OS is not supported on this platform! Reason: Mac-473D31EABEB93F9B (as shown in the picture).

 

Then I change the SMBIOS in config.plist by selecting type 12.1 (as shown in the picture) and after that the USB installer can run. But then it stops as seen in the picture.

 

Please help.

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when I only use one of boot arg -no_compat_check or -igfxvesa only, the problem will still appear as the third image above. but when I use both of these boot args together, the problem seen is as below. It says that OS X El Capitan is already installed on this Mac.

 

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Thank you for helping. I have successfully installed El Capitan on my E7270. Then have installed Clover to SSD and follow all procedures at https://osxlatitude.com/forums/topic/8506-dell-latitude-inspiron-precision-vostro-xps-clover-guide

 

Now, the problem is :

1. Normal boot doesn't work and stops as in the first picture

2. Booting will succeed if followed by boot arg -no_compat_check and -igfxvesa. But, the result, the display obtained is only 4 MB as in the second picture

 

 

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