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  1. #1
    ROG Enthusiast Array kaese PC Specs
    kaese PC Specs
    MotherboardX99 Rampage V Extreme
    Processor5820K

    Join Date
    Oct 2014
    Reputation
    25
    Posts
    65

    Boot from USB problem

    Hey guys,

    I want to boot from an USB device so i created a bootable USB device (FreeDos).
    When I select the boot override menu (F8) I see, and chose the respective USB stick from the menu. However always Windows is booted from the M.2 partition immediately.

    Unfortunately, there is no error message or anything showing up, so I have no clue what is the reason - what can I do?
    Note that I tried two different USB sticks (that are bootable on another machine) and two different USB Ports (X99 and from the additional chip), BIOS is V. 3301.
    Are there some safeboot limitations (safeboot is set to "other OS"), does the board not like the two USB sticks...? Whats going on?

    By the way this is a general thing I really dislike about this board. It seems to have a own will about the boot devices and feels very smart often changing the boot order. And the worst, rather than showing an error message about the boot device chosen it automatically choses another - and the wrong - one! This already gave me headaches in various situations.

    So How can I make the PC boot from USB (and see the error message???)?

  2. #2
    ROG Guru: White Belt Array enyceedanny PC Specs
    enyceedanny PC Specs
    MotherboardRampage V Edition 10
    Processor6850K
    Memory (part number)CMD64GX4M4B2800C14
    Graphics Card #1EVGA GTX 1080 TI FTW3 w/ EK Waterblock + Backplate
    Sound CardASUS SupremeFX Hi-Fi
    Monitor2 x Dell U3011
    Storage #1Samsung 950 Pro 512GB
    Storage #2Samsung 850 Pro 1TB
    CPU CoolerEK EX480 Radiator
    CaseCorsair Obsidian 900D
    Power SupplyCorsair AX1200i
    Keyboard Daskeyboard 4 Ultimate
    Mouse Logitech G502
    Mouse Pad Glorious PC Gaming Race XXL
    Headset/Speakers Klipsch Promedia 2.1
    OS Windows 10 Pro x64

    Join Date
    Apr 2016
    Reputation
    30
    Posts
    88

    Quote Originally Posted by kaese View Post
    Hey guys,

    I want to boot from an USB device so i created a bootable USB device (FreeDos).
    When I select the boot override menu (F8) I see, and chose the respective USB stick from the menu. However always Windows is booted from the M.2 partition immediately.

    Unfortunately, there is no error message or anything showing up, so I have no clue what is the reason - what can I do?
    Note that I tried two different USB sticks (that are bootable on another machine) and two different USB Ports (X99 and from the additional chip), BIOS is V. 3301.
    Are there some safeboot limitations (safeboot is set to "other OS"), does the board not like the two USB sticks...? Whats going on?

    By the way this is a general thing I really dislike about this board. It seems to have a own will about the boot devices and feels very smart often changing the boot order. And the worst, rather than showing an error message about the boot device chosen it automatically choses another - and the wrong - one! This already gave me headaches in various situations.

    So How can I make the PC boot from USB (and see the error message???)?
    Do you have CSM disabled? If so, do you have the USB device set up as UEFI?
    Did you try to go into BIOS -> BOOT -> on the bottom manually override boot to that device?

  3. #3

  4. #4
    ROG Enthusiast Array kaese PC Specs
    kaese PC Specs
    MotherboardX99 Rampage V Extreme
    Processor5820K

    Join Date
    Oct 2014
    Reputation
    25
    Posts
    65

    Thanks enyceedanny the CSM did do the trick! The USB pen drive has FreeDos and apparently has no UEFI drivers.

    Still I wonder if there is a way to get to see an error message.

  5. #5
    ROG Guru: White Belt Array enyceedanny PC Specs
    enyceedanny PC Specs
    MotherboardRampage V Edition 10
    Processor6850K
    Memory (part number)CMD64GX4M4B2800C14
    Graphics Card #1EVGA GTX 1080 TI FTW3 w/ EK Waterblock + Backplate
    Sound CardASUS SupremeFX Hi-Fi
    Monitor2 x Dell U3011
    Storage #1Samsung 950 Pro 512GB
    Storage #2Samsung 850 Pro 1TB
    CPU CoolerEK EX480 Radiator
    CaseCorsair Obsidian 900D
    Power SupplyCorsair AX1200i
    Keyboard Daskeyboard 4 Ultimate
    Mouse Logitech G502
    Mouse Pad Glorious PC Gaming Race XXL
    Headset/Speakers Klipsch Promedia 2.1
    OS Windows 10 Pro x64

    Join Date
    Apr 2016
    Reputation
    30
    Posts
    88

    Quote Originally Posted by kaese View Post
    Thanks enyceedanny the CSM did do the trick! The USB pen drive has FreeDos and apparently has no UEFI drivers.

    Still I wonder if there is a way to get to see an error message.
    Glad you sorted things out. =)

  6. #6
    ROG Guru: Brown Belt Array Vlada011 PC Specs
    Vlada011 PC Specs
    MotherboardRampage V E10 (BIOS 1903)
    ProcessorIntel®i7-5820K (4.5GHz 1.325V)
    Memory (part number)CMD16GX4M4A2666C15
    Graphics Card #1ASUS GTX1080Ti Poseidon
    Sound CardSound Blaster ZxR
    MonitorSamsung P2450H
    Storage #1Samsung 970 EVO PLUS 1TB
    Storage #2Samsung 850 EVO 1TB/WD Black 2TB
    CPU CoolerEK RGB Monoblock RVE10
    CaseLian Li PC-O11 WXC
    Power SupplyEVGA 1200 P2
    Keyboard Deck 87 Francium PRO - MX Brown DS PBT
    Mouse Logitech G900
    Mouse Pad Steeseries QCK
    Headset/Speakers CREATIVE T5900 5.1
    OS Windows 10 Pro x64 v1903
    Accessory #1 iPhone SE Space Grey
    Accessory #2 EK XRES D5 Revo 100 Glass PWM + CoolstreamPE 360
    Accessory #3 Noctua NF-A12x25 PWM x3 (radiator)
    Vlada011's Avatar
    Join Date
    Oct 2013
    Reputation
    21
    Posts
    1,475

    Yea, Rampage V Extreme is in shadow of Black Anniversary edition but still is great motherboard.
    Only rate of people with random problem is unusually big. Probably because complicated BIOS, many features and because it's first ROG board with DDR4.
    With Skylake Extreme situation will be even better. Than people will keep RAM on 3000MHz with C11-C12 and performance of kits will be better and better.


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