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Hello, I send this message with Sierra Finally I make the USB key with "MacOS Disk Creator" and copy the Kexts from E6320_v2 expect the FackeSMC All work perfectly expect my wifi card (Broadcom BCM943224hms). I try with the toleda Mavericks Kexts but it don't work You can find the MacOS Disk Creator utility at this link : https://github.com/chris1111/MacOS-Disk-Creator Thank you very much for your help.

Yes, but a try with 3 other image installer 2 sierra and 1 capitan. I download an other one this night. thank's

But I use a hdd source on esata port. Maybe I have to use it with usb ?

yes of course !

unnamed by emile SAVARY, sur Flickr

I try it Sorry, I don't understand what I have to do ? I try with your guide. Thank's

Hello, Sorry for my bad English, I'm french. I have an E6320 i5 intel 3000HD I have make my USB key with the how to for Mavericks. All work fine. But With "El Capitan" or 3 sierra I have problem during the process installation : With El capitan the computer reboot a the beginning of the installation process. With sierra the computer reboot a the end or show me this error : "the installer payload failed signature check" I try to make a lot of USB key with different Sierra install app / DMG and utility. I try an other usb port. I try to update date with ntpdate -u time.apple.com. I tri with an other E6320 computer a have the same problems... I don't have any idea. Thank you very much for your help