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GeorgesGiralt
1 Rookie
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30 Posts
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1830902
December 23rd, 2018 06:00
BIOS Setting to boot USB UEFI stick
Hello !
I own this, new to me, G3-15 (3579).
It cam with Linux installed on the M.2 NVME card (Ubuntu 16.04). I want to test Ubuntu 18.04 on the virgin HDD.
SO I'm trying to boot an UEFI USB stick with a live 18.04 OS on it.
I'm unable to find the setting(s) to make this USB stick to boot and work. I've even tried to upgrade the BIOS to the latest 1.5.1 version to no avail.
Could you please tell me what I do wrong and/or link me to a detailed BIOS user guide for DEll platforms ?
Many thanks in advance for your help and answer.
Have a bright day.
295520
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Posted December 23rd, 2018 07:00
Hello,
Connect the stick to usb port and reboot the system (or turn it on) as soon as you see the Dell logo tap F12 in the menu that appaers choose your stick.
295519
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Posted December 23rd, 2018 07:00
The answer above is correct. On UEFI systems, the boot order list for local storage devices only includes paths that have been formally registered into the firmware, which is typically done during OS installation. Temporarily attached devices like flash drives are accessed through the F12 one-time boot menu. Technically you could register the \EFI\Boot\Bootx64.efi bootloader file on that flash drive as a permanent boot device, but you may not want to.
295513
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Posted December 23rd, 2018 08:00
Thank you both for your answer, but, unfortunately it does not work. I tried with 2 different USB sticks : one old 8GB USB2.0 GPT formatted with Ubuntu 18.10 put on it in "copy mode" by the Rufus application one Lexar USB 3.0 32GB with the same parameters and done exactly as the previous one. None show whatever options I choose. in F12 or in the BIOS ! So all help will be greatly appreciated !295504
1
Posted December 23rd, 2018 09:00
If you haven’t already, try other USB ports on the system. I’ve noticed that some newer Dell systems only allow booting from certain ports for some reason. You also have to make sure the flash drive is already connected when the system first powers up. You can’t connect it afterward, just in case you were doing that.295637
0
Posted December 26th, 2018 06:00
Hello !
After some fiddling with USB sticks and settings, I finally found the answer. I did "pure" USB stcks, I.E. with GPT partition tables and EFI boot executable.
I is not working. But when you partition your stick with MSDOS (or MBR as it is sometimes called) the stick is detected and if the boot is set to UEFI on the stick, it is listed on the UEFI boot list.
So I've found the "workaround" or the logic behind the Dell boot BIOS.
Thanks for your help.
(edited)
295460
0
Posted December 26th, 2018 07:00
FYI MSDOS and MBR are not interchangeable terms at all. MBR has nothing to do with DOS. But yes, a UEFI system can boot in UEFI mode from either GPT or MBR USB devices as long as the partition is formatted FAT32 and the UEFI bootloader file is there. GPT is more common, but MBR does work, and can be useful if you want to make a single USB device that’s bootable for both Legacy BIOS and UEFI systems. Glad you found a workaround.
295461
0
Posted December 26th, 2018 07:00
FYI MSDOS and MBR are not interchangeable terms at all. MBR has nothing to do with DOS. But yes, a UEFI system can boot in UEFI mode from either GPT or MBR USB devices as long as the partition is formatted FAT32 and the UEFI bootloader file is there. GPT is more common, but MBR does work, and can be useful if you want to make a single USB device that’s bootable for both Legacy BIOS and UEFI systems. Glad you found a workaround.
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(edited)
104179
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Posted June 22nd, 2019 09:00
Many thanks jphughan for pointing the path \EFI\Boot\Bootx64.efi of the bootloader file in Windows 10 64 bits USB Media creator tool ! It was missing in following Dell support article https://www.dell.com/support/article/fr/fr/frdhs1/sln142679/how-to-enable-boot-from-dvd-option-with-uefi-boot-mode-enabled-windows-10-8-1-8?lang=en and I was able to boot from USB stick with UEFI boot mode enabled by adding it in BIOS UEFI File Name entry which has not to be left blank ;-)104180
0
Posted June 22nd, 2019 09:00
Many thanks jphughan for pointing the path \EFI\Boot\Bootx64.efi of the bootloader file in Windows 10 64 bits USB Media creator tool ! It was missing in following Dell support article https://www.dell.com/support/article/fr/fr/frdhs1/sln142679/how-to-enable-boot-from-dvd-option-with-uefi-boot-mode-enabled-windows-10-8-1-8?lang=en and I was able to boot from USB stick with UEFI boot mode enabled by adding it in BIOS UEFI File Name entry which has not to be left blank ;-)Note: This comment was created from a merged conversation originally titled Re: BIOS Setting to boot USB UEFI stick
GeorgesGiralt
1 Rookie
•
30 Posts
308051
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Posted December 26th, 2018 06:00
Hello !
After some fiddling with USB sticks and settings, I finally found the answer. I did "pure" USB stcks, I.E. with GPT partition tables and EFI boot executable.
I is not working. But when you partition your stick with MSDOS (or MBR as it is sometimes called) the stick is detected and if the boot is set to UEFI on the stick, it is listed on the UEFI boot list.
So I've found the "workaround" or the logic behind the Dell boot BIOS.
Thanks for your help.
Have a nice day.
Note from Dell:
Need further assistance? Use the "Get Help Now" option at the bottom right to chat with a Dell technician right away.
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