Windows 10: Boot to CD Drive

Discus and support Boot to CD Drive in Windows 10 Support to solve the problem; Since I did clean install of Win 10 I find it will not allow me to boot to internal cd drive or USB drive. I know this is an attempt to secure the OS... Discussion in 'Windows 10 Support' started by mowfixer, Sep 17, 2015.

  1. mowfixer Win User

    Boot to CD Drive


    Since I did clean install of Win 10 I find it will not allow me to boot to internal cd drive or USB drive. I know this is an attempt to secure the OS or lock you out of competing OS like linux or both but I can find no way around this. My bios has not been updated to the secure boot version on purpose but the OS still intercepts any attemp to boot to any device other than drive with OS on it.

    My boot sequence is CD first but it is ignored on boot. Also if I go to boot device selection and select CD drive it still boots to win 10. I have tried win 10 setup but there is no option that i have found that allows me to do what I want with my own machine. I am a developer and routinely boot to cd and this behavior is unacceptable. I would like to use win 10 but have gone back to Win 7 until I can find out how to defeat this.

    What is the secret?

    :)
     
    mowfixer, Sep 17, 2015
    #1

  2. Windows 10 won't connect to the internet

    This is not in the Bios. I couldn't find the Bios. This is under F12 which has titles of Main, Advanced, Boot, Security, and Exit. Under Boot it says "Set Boot Priority"

    1st Boot - [Hard Disk: ST31000.....]

    2nd Boot - [USB Hard Disk]

    3rd Boot - [CD/DVD: HL-DT-ST D....]

    4th Boot - [USB CD/DVD]

    5th Boot - [USB Floppy}

    6th Boot - [Network]

    Hard Disk Drives

    CD/DVD ROM Drives

    You said to move the CD/DVD drive to 1st boot? Which one and how do I move them?
     
    longtimealaskan, Sep 17, 2015
    #2
  3. Andre Da Costa, Sep 17, 2015
    #3
  4. jds63 Win User

    Boot to CD Drive

    Assuming the CD/DVD or USB Flash Drive is bootable you are using ? Otherwise it will not occur.Bad Disc or USB flash drive another possibility why
     
    jds63, Sep 17, 2015
    #4
  5. Bazz Win User
    The secret is my friend do not ever allow fast start up in your bios or the windows 10 OS.
     
  6. NavyLCDR New Member
    Windows 10 does not change the bios in any way whatsoever nor does it in any way intercept what the bios uses to boot the computer from. To boot from the CD or USB, I'll bet you have to change the bios boot method to legacy or CSM.
     
    NavyLCDR, Sep 17, 2015
    #6
  7. rmonroe36 Win User
    See if this clip helps:


    Rich
     
    rmonroe36, Sep 17, 2015
    #7
  8. jds63 Win User

    Boot to CD Drive

    jds63, Sep 17, 2015
    #8
  9. Bazz Win User
    Well from my experience with windows 10 on laptops it does indeed change the way you can enter the bios, so if you have fast boot enabled you can be locked out if you don't know what you are doing.

    This is a fact 8.1 is no better certain manufacturers have made this the problem that it is.

    It is complete madness not to want to see a 2 second screen to get you into your bios.
     
  10. jds63 Win User
    Saying this might have something to do with secure boot, if thread starter has it enabled, what i thought seeing mentions of CSM and Legacy.Thought i read might cause issue, secure boot.
     
    jds63, Sep 17, 2015
    #10
  11. Bazz Win User
    Well kidda I think you are talking about a laptop and not a Desktop, your specks say Desctop
     
  12. jds63 Win User
    Who is ??
     
    jds63, Sep 17, 2015
    #12
  13. Bazz Win User

    Boot to CD Drive

    Computer Type PC/Desktop
    System Manufacturer/Model Number Lenovo
    OS Windows 10

    Is that pretty much what you wanted jds
     
  14. jds63 Win User
    I did ? I was quoting Navy.
     
    jds63, Sep 17, 2015
    #14
  15. NavyLCDR New Member
    It really doesn't matter, desktop or laptop. What we are talking about is a delay allowed by the bios for the user to press a key to either enter bios setup or choose the boot device. That is a function 100% of the bios and cannot be changed by Windows for two reasons:

    1. Whatever delay function setting the bios uses to either insert a delay, not insert a delay, or determine the length of the delay is stored in EPROM. The address where the value is stored in EPROM and what that value represents can be anywhere and anything in EPROM. For Windows to change that it would have to know what address the setting is stored at and what the value represents and that is simply impossible. Write the wrong value to the wrong address and the entire bios can become corrupted, more often than not requiring EPROM chip replacement.

    2. The delay that bios inserts to allow a key to be pressed for setup or boot device choice occurs before any boot files are loaded from any source. Thus that delay cannot be affected by Windows.

    Now - there can be a delay built into the boot loader to allow the boot loader to hand off booting to a different source and that is a function of the operating system and Windows can certainly interfere with that. But it is impossible for the operating system to interfere with bios created delays.
     
    NavyLCDR, Sep 17, 2015
    #15
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Boot to CD Drive

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