I have a new to me workstation that had WIn 7 installed. I need to install CentOS 7.
BIOS screens indicate system has 2 disks, and system booted to Win 7 on arrival.
When I attempted to install CentOS 7 (using usb drive and CentOS-7-x86_64-DVD-1810.iso), I system did not find disks to install. I attempted bios adjustments to ensure that security was not preventing me from accessing hard drives.
On next attempt to install, boot failed with 6 beeps from system.
Made an attempt to "hard reset" bios (unplug device - hold power button for 15 sec) without success.
Could use some ideas both to get BIOS back to where I can install OS, and any settings required to allow LInux to be installed on system disks.