Understand UEFI and CSM BIOS setting for ASUS H97-Plus

We deal with a dozen of these a day. Every single one gets installed without need for a UEFI committee thus far. Are you writing a guide?

No. Just trying to figure out the BIOS so I can solve the problem at this link. Both myself and a WD representative can't get a backup drive connected through the USB (NOT the boot drive as its SATA and boots fine) to be OnLine.

Second Hard Drive Not Appearing in Explorer

There has always been a way to turn off Secure Boot so far. We could spot it if there were pictures?

Be glad to send all the pics you want. As previously stated did Excel listing because my estimate will be over 100 pics as each line in the Excel list I provided for the most part shows as a separate page for each line. Can you narrow down where I should focus for pics.

Read your mobo manual on board's Support Downloads webpage.

I have the MOBO user guide sitting in front of me. Will check website to see if any different. MOBO is brand new - bought 12/5/2014.

If you're not even trying to install Win7 then there is rarely need to change settings to get USB external recognized. Those settings mainly pertain to booting either via Legacy or UEFI. Which is yours? If in doubt post back screenshot of Disk Mgmt.

If larger than 2tb Format drive GPT and assign a drive letter. Try every USB port. Is drive detected in another PC? Does it pass Data Lifeguard diagnostics - new or not?

Those settings mainly pertain to booting either via Legacy or UEFI. Which is yours? If in doubt post back screenshot of Disk Mgmt.

That is one of the things I'm confused about.
From my prior reading UEFI identifies a new boot standard primarily for Windows OSes.
So Linux or BSD would be considered legacy. Regardiings Windows OSes I think UEFI starts with WIndows 8 or 8.1 (not sure on this). witjh Windows 7 and prior being considered legacy.
UEFI committee never specifies where legacy stops and UEFI begins.

Didn't realize the UEFI standard applied to Hard Disks.

Per your statement attaching DiskMgt pic minus USB problem as not connected right now.

If larger than 2tb Format drive GPT and assign a drive letter.?

Problem drive is only 160GB and boot SATA is 250 GB

Try every USB port.

Have NOT done that. Tried two or three and Drive is recognized -- just Offline -- so my guess is USB port OK as sees drive.

Is drive detected in another PC?

Yes. Initially used an internal IDE to SATA connector and could not get drive recognized. Finally went to shop where I bought MOBO and they used another of the same and found one I had was bad out of the box. While there asked them check drive (they used external USB to IDE -- same one I'm using now) and could see drive and directory with their system.
Bought the external USB to IDE connector from them, hooked it to this MOBO when I got home along with the blank (zeroed) SATA

After playing with BIOS finally found a combination (unfortuantely didn't write down) which allowed me to copy the External to the new SATA using the external USB to IDE adapter. After copying both partitions (C & D) to new SATA, I then installed Window 7 on the new SATA using the same Win7 CD I had used wiith the external drive I loaded the SATA from. Next got a new activation code from M$.

After couple days of loading software needed to access the external for some files and this is where I found the external USB to IDE connector showing, but Offline. As I recall -- but NOT sure -- when the SATA was new and blank, I believe secure boot could be toggled, but Not now -- Read Only. Won't swear that it could be toggled at that time but believe so.

All of above plus discussions on thread link I posted has lead me to thinking problem lies with:
1) BIOS
2) Bad Controller Board.

Since little confused over BIOS settings -- Excel list plus glossary has helped a bunch -- thought I would tackle BIOS first.

Does it pass Data Lifeguard diagnostics - new or not?

Have that planned for tomorrow. Planned to boot from CD with SATA boot removed and see if Lifeguard sees drive unless you recommend different configuration?

FollowUP:

Finally got drive online.
See resolution at:
Second Hard Drive Not Appearing in Explorer

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That leaves just my primary BIOS question as to why "Secure Boot" option is Read-Only and if there is some other BIOS setting I need to Enable/Disable in order to allow me to select it?

Can we see a picture now of the BIOS tab?

While you're at it take a picture also of the tab with the CSM settings. Expand choices so we can see them

Never thought of it till now, but can't use Windows Snipper of my Screen Grab program for BIOS.
Only way -- unless you know otherwise -- is take an actual picture then upload it.
If that is the only option will have to try and borrow one as I do not own a digital camera nor cell phone with a camera.