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Dell D820 laptop BIOS with disk controller option

Posted: Fri Oct 28, 2016 6:48 am
by PaulD820
We're trying to install Windows 7 on our D820 and we need to set the disk controller in the BIOS menu. The D820 had A09 so we upgraded to A10, but still no option to access a disk controller. Seems we need a downgrade instead of an update. Any suggestions?

Re: Dell D820 laptop BIOS with disk controller option

Posted: Thu Feb 09, 2017 8:56 am
by edwin
I am not seeing any mention of a disk controller needing to be set here:
http://dellwindowsreinstallationguide.c ... -1-64-bit/

Not even for windows 10.So, where are the instructions coming from?