Attemp to write a Windows 10 ISO on an empty 16gb USB Drive

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  1. Posts : 2,773
    Windows 11 Pro, 21H2
       #11

    My bad, thanks for the clarification.
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  2. Posts : 139
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    Thread Starter
       #12

    Anyone? Other files are writable to the 16gb USB but a 5gb ISO is not?

    - - - Updated - - -

    OK, HAS to do with a ISO? on a FAT32 USB?, Changed it to a NTFS and is copying
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  3. Posts : 17,281
    Windows 11 Pro
       #13

    jagman said:
    Anyone? Other files are writable to the 16gb USB but a 5gb ISO is not?

    - - - Updated - - -

    OK, HAS to do with a ISO? on a FAT32 USB?, Changed it to a NTFS and is copying
    The first and second reply to your initial post answered your problem, just curious as to what more you can expect? FAT32 has a single file size limit of 4GB. Then the subsequent replies provided you with several options - use the Media Creation Tool, split the WIM file, format the USB flash drive as NTFS, and I believe multiple partitions, a FAT32 partition to boot from followed by an NTFS partition containing the >4GB .wim file. Not sure how more you could expect to receive and yet you say, "Anyone? Other files are writable to the 16gb USB but a 5gb ISO is not?" Really!?!
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  4. Posts : 139
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    Thread Starter
       #14

    SORRY I wasted your time, "SIR"...
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  5. Posts : 17,281
    Windows 11 Pro
       #15

    Saying thank you to the people who provided you with the answers to your issue would be a nice gesture.
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  6. Posts : 17,281
    Windows 11 Pro
       #16

    Bree said:
    That suggestion was in case if the OP wanted to put a copy of the ISO on a USB to transfer it to another machine, not as a way to make a bootable usb.
    My guess is the ISO on the flash drive probably has something to do with this:
    After Windows INSTALLED A NEW REALEASE [AUTO] My Apps started missing
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  7. Posts : 3,996
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #17

    If the *.iso file is bigger than 4G you can't copy it to a Fat32 drive. You have to change the format type to efat or NTFS.

    If you want to extract the files from the *.iso file to make the USB drive boot able then you have to see if there is a file inside the iso file that is bigger than 4G. Normally this file will be \sources\install.wim. In this case you can split the install.wim into two smaller install.swm files.
    hsehestedt gave you the link on post #5
    Create bootable USB installer if install.wim is greater than 4GB

    DISM - Split install.wim file
    Last edited by Megahertz; 23 Jun 2020 at 11:18.
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