Windows 10: Can I make a single UEFI & BIOS bootable USB?


  1. Posts : 227
    Windows 10 Enterprise LTSB
       09 Mar 2017 #1

    Can I make a single UEFI & BIOS bootable USB?


    I have been trying to create a multipurpose bootable USB for myself, I am trying to get to to have a windows installer and a live linux distro with persistence on one usb.
    but i have been having trouble trying to find a bootloader that can boot both from the same usb in efi mode. but that aside I would like to have a uefi/bios bootable usb working but it seems to be one of the other, if I install UEFI mode some older computers cant read it and vice versa. I still come across a couple of old BIOS computers that i need to reinstall and i would like to have it all on one usb if possible. Can i achieve this?
      My ComputerSystem Spec

  2.    09 Mar 2017 #2

    You want to put an EFI bootloader on the USB? I'd use The rEFInd Boot Manager: Installing rEFInd

    You could create 3 partitions on the USB (in Linux, Windows won't let you make more than one partition on removable media), put the Windows install media on the first (formatted FAT32 so it will work for EFI and BIOS), put rEFInd on the second (FAT partition) and Linux on the 3rd. If you boot BIOS computer it will only see the first partition. If you boot from UEFI you can boot rEFInd boot manager and decide whether to boot the Windows installer or Linux.

    Is that what you are after?
      My ComputerSystem Spec

  3.    09 Mar 2017 #3

    I use diskpart to create my Windows 10 install thumb drives. They are bootable with UEFI and legacy BIOS.

    select disk #
    clean
    create partition primary
    format fs=fat32 quick
    active
    assign
    exit
      My ComputerSystem Spec

  4.    09 Mar 2017 #4

    He wants to put Linux on the same USB if you look at the first sentence of his question.
      My ComputerSystem Spec

  5.    09 Mar 2017 #5

    Yes I saw that, but he also asked about having it boot from both Legacy and UEFI. I'm just saying it is possible, with Windows anyway. I have very limited experience with Linux, I only run it on my raspberry Pi. With the PI, you just image a Micro SD card to install and run it.
      My ComputerSystem Spec

  6.    10 Mar 2017 #6

    xdarkmario said: View Post
    I have been trying to create a multipurpose bootable USB for myself, I am trying to get to to have a windows installer and a live linux distro with persistence on one usb.
    but i have been having trouble trying to find a bootloader that can boot both from the same usb in efi mode. but that aside I would like to have a uefi/bios bootable usb working but it seems to be one of the other, if I install UEFI mode some older computers cant read it and vice versa. I still come across a couple of old BIOS computers that i need to reinstall and i would like to have it all on one usb if possible. Can i achieve this?
    You might want to check out YUMI. There's a BETA version, near the bottom of the page, that is said to be able to do some limited UEFI booting. I'm not sure if it can do both or if you'll run into the same issue - one or the other. However, it's worth a look/read in any case.
      My ComputerSystem Spec


 

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