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  1.    11 Mar 2017 #21
    Join Date : Mar 2016
    Posts : 510
    Windows 10 Home

    Quote Originally Posted by Hydranix View Post
    Also, if you are attempting to boot this flash drive in UEFI mode, you'll want to use FAT32
    FAT32 applies to both UEFI BIOS and Legacy BIOS, right?

    Quote Originally Posted by Hydranix View Post
    Have you tried actually booting the flash drive?
    No. I want to use it to clean install Redstone 2 later.
      My ComputerSystem Spec
  2.    11 Mar 2017 #22
    Join Date : Jul 2015
    California
    Posts : 203
    Kernel 4.x.x

    Quote Originally Posted by Matthew Wai View Post
    FAT32 applies to both UEFI BIOS and Legacy BIOS, right?
    Yes, that is correct. By using FAT32, you can boot in either Legacy mode, or UEFI mode if supported, and the flash drive contains both UEFI and Legacy boot files.

    Quote Originally Posted by Matthew Wai View Post
    No. I want to use it to clean install Redstone 2 later.
    Then I would suggest backing up the data on the drive and doing a full wipe to avoid any problems.

    After the data has been backed up
    Code:
    diskpart
    sel dis #
    cle all
    cre par pri
    format fs=fat32 quick
    act
    ass letter=s
    exit
    bootsect /nt60 S: /force
    bootsect /nt60 S: /force /mbr
    copy over data and everything should work as expected
      My ComputersSystem Spec
  3.    12 Mar 2017 #23
    Join Date : Mar 2016
    Posts : 510
    Windows 10 Home

    Quote Originally Posted by Hydranix View Post
    bootsect /nt60 S: /force
    bootsect /nt60 S: /force /mbr
    The above does not exist in post #7, so I did not run them. Why are they needed?
    Before you wrote post #22, I had already done the following.
    Is the USB drive bootable now?



      My ComputerSystem Spec
  4.    12 Mar 2017 #24
    Join Date : Oct 2014
    New Jersey
    Posts : 1,567
    Windows 7 Pro x64 Windows 10 Pro x64 Creators Update

    But there`s no iso file on it, is there ?

    I still don`t understand what people are trying to do here, are you trying to make a bootable usb to run windows 10 off of ?

    Or are you trying to make a bootable usb to install windows 10 off of ?
      My ComputersSystem Spec
  5.    12 Mar 2017 #25
    Join Date : Mar 2016
    Posts : 510
    Windows 10 Home

    I want to make a bootable USB drive to clean install the upcoming version of Windows 10.
      My ComputerSystem Spec
  6.    12 Mar 2017 #26
    Join Date : Jul 2015
    California
    Posts : 203
    Kernel 4.x.x

    Quote Originally Posted by Matthew Wai View Post
    I want to make a bootable USB drive to clean install the upcoming version of Windows 10.
    This threads was originally concerning a UEFI-mode bootable flash drive. So I answered you under the assumption that you wanted to make a flash drive UEFI bootable.

    Then you said:

    Quote Originally Posted by Matthew Wai View Post
    FAT32 applies to both UEFI BIOS and Legacy BIOS, right?
    So I added the extra bootsect commands which make the drive Legacy-mode bootable. So that you would have a flash drive which can do both.

    I originally omitted the Legacy-mode steps because I've had many experiences of people mistakenly installing Windows on modern hardware in Legacy mode, and using the CSM (which slows down the boot process and places limitations on the OS to some degree) rather than in UEFI-mode, and since the IBM PC BIOS (aka Legacy BIOS) is entirely deprecated, I assume UEFI is what people want by default.


    Quote Originally Posted by Matthew Wai View Post
    Is the USB drive bootable now?
    In UEFI-mode it will boot if the contents of the Windows 10 ISO, not the ISO file itself, but what it contains, are copied to the flash drive.

    If you want to also have the option to Legacy boot the flash (not recommended unless you know you need it to be) you will have to run the bootsect command to write the Legacy boot code to the flash drive. Of course the ISO contents will need to be copied to the flash drive as well, like I said above.


    I hope I wasn't unclear, sorry if I over explain things a bit.
      My ComputersSystem Spec
  7.    12 Mar 2017 #27
    Join Date : Mar 2016
    Posts : 510
    Windows 10 Home

    Quote Originally Posted by Hydranix View Post
    So I added the extra bootsect commands which make the drive Legacy-mode bootable.
    No bootsect commands are needed in the method described in post #7, which applies to both UEFI and Legacy mode. Why are bootsect commands needed in my case?

    I use an MBR disk, so I have to use the Legacy mode, but I might go over to GPT in the future.
      My ComputerSystem Spec
  8.    12 Mar 2017 #28
    Join Date : Jul 2015
    California
    Posts : 203
    Kernel 4.x.x

    Quote Originally Posted by Matthew Wai View Post
    No bootsect commands are needed in the method described in post #7, which applies to both UEFI and Legacy mode. Why are bootsect commands needed in my case?

    I use an MBR disk, so I have to use the Legacy mode, but I might go over to GPT in the future.
    the bootsect commands are unnecessary if not using Legacy mode. However, in your case, since you're using MBR partition table, and do not at this time want to move to a GPT, you'll need to use the bootsect commands on the flash drive.

    I'd strongly advise, if your motherboard firmware is UEFI capable, to use a GPT formatted hard drive, and installing windows in UEFI mode, and disabling Legacy Emulation in your firmware (aka the Compatibility Support Module).
      My ComputersSystem Spec
  9.    12 Mar 2017 #29
    Join Date : Mar 2016
    Posts : 510
    Windows 10 Home

    On MCT, should I select 'USB flash drive' or 'ISO file' for my bootable USB drive?

    My ASUS motherboard supports UEFI, but my HDD is just 500 GB, so I don't see why I should use GPT, as I have been using MBR happily for years.
      My ComputerSystem Spec
  10.    12 Mar 2017 #30
    Join Date : Oct 2014
    New Jersey
    Posts : 1,567
    Windows 7 Pro x64 Windows 10 Pro x64 Creators Update

    I choose Iso file, so you can create the usb stick or a dvd whenever you want, and you now have the Iso file permanently.

    It`s so much easier to let Rufus create either type of installer.

    I use MBR too, I`ve seen no benefit to using UEFI on a boot drive, and I like 1 single partition.
      My ComputersSystem Spec

 
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