Asus X99-A motherboard not reading older SATA drive

[SNS989]

Just upgraded my system - all new internals except for 2 WD 1.5TB drives and a Seagate DVD-RW.
New motherboard BIOS recognizes all drives, but lists only the DVD as bootable.

Here are the specs:
New motherboard: Asus X99-A
CPU: Intel i7-5820K
HDD: WD 1.5 TB SATA
DVD: Seagate SATA
GPU: XFX R7 240
OS: Windows 7 64-bit

Bootable HDD is backed up to a spare (not installed) so I am not too worried about data loss.
Drive did boot with old motherboard.
Installed new GPU on old system to ensure GPU drivers are installed.
Tried to boot to my Windows 7 install disk. The install disk didn't recognize the drive either.
Tried to boot with the Asus X99-A dvd that shipped with the motherboard. Simply went to a DOS prompt on C (DVD). Did not recognize the HDD (probably because the HDD size exceeds the old DOS maximum).
I'm thinking there are some Asus windows drivers missing.
I'd appreciate any suggestions on how to get the new configuration to boot into windows with the old HDD.

 

[alexoiu]

Try making a bootable USB drive using Rufus (for example) them copy the Windows files on the USB and see if booting and installing from it.

 

[SNS989]

Thank you alexoiu.

Created the Bootable USB, with the Windows installation files. Windows installation started, and then prompted me to install the hard drive device drivers. The same happens if I boot with my original Windows installation DVD.
The exact message is "A required CD/DVD device driver is missing..." It then prompts me to insert the DVD/USB/etc.

Any thoughts?

 

[3ogdy]

Do you have any RAID settings in the BIOS? Since you don't seem to be using RAID, that should be disabled.
Also, make sure you check CSM (the Compatibility Support Module) out. That might take care of your problem. Make sure CSM is enabled adn try to boot into Windows. If it's already on, try disabling it and rebooting.

 

[alexoiu]

Thank you alexoiu.

Created the Bootable USB, with the Windows installation files. Windows installation started, and then prompted me to install the hard drive device drivers. The same happens if I boot with my original Windows installation DVD.
The exact message is "A required CD/DVD device driver is missing..." It then prompts me to insert the DVD/USB/etc.

Any thoughts?

Is the drive connected to an USB 2.0 port? If not, try it.

 

[SNS989]

Its been a while, but here was the solution:
Somehow the BIOS was set to RAID.
Reset the BIOS entirely, and it worked until the next reboot and it was RAID again.
Flashed the BIOS, disabled and re-enabled the controller and it worked.

 

[Smawgg]

i'm having the same problem. Raid is off though. it shows the old sata drive when i click boot options but its not reading it in the sata ports