why my DVD and USB device can not be read by bios?

08
2014-07
  • it_is_a_literature

    I can use my usb drive and DVD drive to read and write when I enter into Windows 7. When ENTERING into bios by pressing F8, in the boot menu, I can not see the USD and DVD device, what is the matter with my motherboard? The type of motherboard is asus H81M .

    • Answers
  • Ruslan Gerasimov

    Depending on what is default mode: UEFI or Legacy:

    1. You will need probably to disable Secure Boot in the BIOS

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    1. You may also need disable Quick Boot

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    1. In general you will always need to Enable USB Boot and select First Boot Device (USB disk or CD/DVD)

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    or, for example,

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    1. Specifically to your H81M mainboard you will probably need to pass instructions form page 29 from this Manual http://dlcdnet.asus.com/pub/ASUS/mb/LGA1150/H81M-A/E8599_H81M-Series.pdf enter image description here

    Also you can watch this video


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  • Rodnower

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    What to do?


    • Related Answers
  • Peter Mortensen

    First off is this drive USB 2.0? You need 2.0 for bootable media. Also does your BIOS give you the option of choosing a drive at boot time? I know I have a weird issue where one of my older IDE hard drives will not boot on its own, but when I hit escape during the BIOS boot I can then chose HHD1, HHD2, DVD1, DVD2. Basically any drives I have. Also check in your BIOS to see if you have the drive activated for booting. For some you have to add it in.

  • Dinosaur pawz

    Always set the boot order correctly. That is, if you want to boot from a USB, make sure it is supported (2.0/1.0, there is a difference).

    Also, is this detection to boot from, such as system software, or what is it you are getting at here?