Z170x Gameing GT

[spersels]

I have 6 SATA drives connected to this MB and every time I boot the bios seems to want to cycle through and check every drive - about 5 minutes of disk crunching and I can hear it moving from drive to drive.  Once done it boots as normal.

How do I stop this?

[dmdilks]

What I would do is connect just the boot drive try it. Than connect one drive at a time till the one it keeps checking.

You can look at these items in the Bios too.

Storage Boot Option Control
Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller.
Disabled            Disables option ROM.
Legacy Only        Enables legacy option ROM only. (Default)
UEFI Only            Enables UEFI option ROM only.
    This item is configurable only when CSM Support is set to Enabled.

CSM Support
Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process.
Enabled            Enables UEFI CSM. (Default)
Disabled Disables UEFI CSM and supports UEFI BIOS boot process only.
    This item is configurable only when Windows 8/10 Features is set to Windows 8/10 or Windows 8/10