May 2019 Update ISO too Large for File System

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  1. Wynona's Avatar
    Posts : 23,419
    Windows 10 Skip Ahead Preview Build 18312
       #1

    May 2019 Update ISO too Large for File System


    May 2019 Update ISO too Large for File System

    First let me say I know all the pros and cons of what I'm trying to do. Secondly, I know the alternatives, and will probably be forced to use one.

    The background: I have seven computers to update and want to do it in the shortest time possible. Because MCT hasn't always been the easiest thing to use, I decided to go the UUPDump route.

    The first thing I did was to grab the Build 18912 ISO to have "just in case". I transferred the ISO to a new 16GB flash drive, which worked flawlessly. So, I went for the Feature Update to Windows 10, version 1903 (18362.145) amd64, as shown in the first line of the screenshot below:

    Click image for larger version. 

Name:	Feature Updates.jpg 
Views:	3 
Size:	71.2 KB 
ID:	236733

    Everything seemed to go as it should; I unblocked the zip file, then extracted the files:

    Click image for larger version. 

Name:	Feature Finished.jpg 
Views:	2 
Size:	76.1 KB 
ID:	236734

    So, as you can see, I opened the folder and proceeded to transfer the ISO to another new 16GB flash drive. Whoops! What is this!?!

    Click image for larger version. 

Name:	Feature Too Large.jpg 
Views:	104 
Size:	38.1 KB 
ID:	236735

    I have gone back and tried again a number of times, but still get the same result.

    Anyone know what I did wrong?
      My ComputerSystem Spec

  2. bobkn's Avatar
    Posts : 2,152
    Win 10 X64 Pro 1809 17763.55
       #2

    I don't follow what you did, but there's a 4GB limit for a single file on a FAT32 formatted drive.

    Does that have anything to do with your issue?
      My ComputersSystem Spec

  3. Wynona's Avatar
    Posts : 23,419
    Windows 10 Skip Ahead Preview Build 18312
    Thread Starter
       #3

    bobkn said: View Post
    I don't follow what you did, but there's a 4GB limit for a single file on a FAT32 formatted drive.

    Does that have anything to do with your issue?
    Not sure, Bob. However, because I was able to transfer Build 18912 (Fast/Skip Ahead) to one of the same flash drives I'm working with (I bought six of the same 16GB flash drives), I wouldn't think so, but I'll check to be sure.

    Oh, and I did skip a few of the steps I actually took.

    Edit: OK, formatting the flash drive to NTFS worked; however, that leaves another question . . . why on earth did Build 18912 go right onto the exact same drive? The ISO is over 4GB, just as is the ISO for Build 18362.145!
      My ComputerSystem Spec

  4. Kari's Avatar
    Posts : 16,028
    Windows 10 Pro
       #4

    bobkn said: View Post
    I don't follow what you did, but there's a 4GB limit for a single file on a FAT32 formatted drive.

    Does that have anything to do with your issue?
    Wynona said: View Post
    I wouldn't think so, but I'll check to be sure.

    Wynona, your issue has everything to do with FAT32 file size limit of 4 GB. The ISO file is bigger than 4 GB, not much but as the limit is exact, it's enough to make it impossible to copy it to a FAT32 partition on a USB flash drive.

    If you mount the ISO and copy its content to USB Flash Drive, it should work because no single file in that ISO exceeds 4 GB. It's the combined size of all files, the ISO file itself that exceeds the file size limit.

    In case the install.wim file is bigger than 4 GB, as often with custom WIM images, see @Martin's excellent tutorial to workaround this FA32 file size limit: Create bootable USB installer if install.wim is greater than 4GB

    Kari
      My ComputerSystem Spec

  5.    #5

    Is a install.wim file?
    If so, you can split it into multiple and smaller install.swm using dism or wimlib-imagex.exe.

    Dism CMD
    Dism /Split-Image /ImageFile:install.wim /SWMFile:install.swm /FileSize:3600

    Attached Wimlib
    May 2019 Update ISO too Large for File System Attached Files
      My ComputerSystem Spec

  6. f14tomcat's Avatar
    Posts : 41,596
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)
       #6

    Kari and Bobkn are correct, Wynona. I see what you're try to do. You're trying to avoid the Cumulative Updates by using the 18362.145 instead of the base .30 (I believe it's still that). As stated before elsewhere, if you use the base .30 as an in-place, and do not tell the process to not check for updates (it defaults to "check for updates"), you will end up with .145. In the worst case, it is 1 cumulative to apply. But I believe you will end up with 18362.145.
      My ComputersSystem Spec


  7.    #7

    Megahertz said: View Post
    Is a install.wim file?
    If so, you can split it into multiple and smaller install.swm using dism or wimlib-imagex.exe.

    Dism CMD
    Dism /Split-Image /ImageFile:install.wim /SWMFile:install.swm /FileSize:3600

    Attached Wimlib
    It is easier to use this since MS allowed multiple partitions to be created on removable us flash drives.

    Create bootable USB installer if install.wim is greater than 4GB
      My ComputerSystem Spec

  8. f14tomcat's Avatar
    Posts : 41,596
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)
       #8

    Think she's trying to do in-place upgrade 1809>1903 using an ISO on a thumb. Plug in, mount, setup.exe. Wynona will have to verify.
      My ComputersSystem Spec

  9.    #9

    exFAT Utility


    Wynona said: View Post
    . . . why on earth did Build 18912 go right onto the exact same drive? The ISO is over 4GB, just as is the ISO for Build 18362.145!
    For an unknown reason, sometimes it works in Windows. Go figure!

    Another option, is to format the flash drive exFAT.

    In OpenSUSE, the following must be installed to read the flash drive.

    Yast>Software Management>Search>exfat>Install the 2 RPM Packages>Accept>No need to restart>Flash Drive is readable immediatlly. Requires an active Internet connection.

    Code:
    Installing exfat-utils-1.3.0-1.3.x86_64.rpm (installed size 237 KiB)
    Installing fuse-exfat-1.3.0-1.3.x86_64.rpm (installed size 78.7 KiB)
    Useful when downloading Windows 10 Final ISO from Linux. exFAT is compatible with MAC.

    NTFS.com. NTFS vs FAT vs exFAT

    Edit: Update the installation method, knowing now that it is for students.
    Last edited by MikeMecanic; 6 Days Ago at 13:52.
      My ComputerSystem Spec

  10.    #10

    Wynona said: View Post
    I have gone back and tried again a number of times, but still get the same result.

    Anyone know what I did wrong?
    Why are you trying to copy the ISO file itself to a FAT32 flash drive? You should mount the ISO file and copy the files and folders to the FAT32 flash drive.

    I have a 32GB flash drive that I prepare in the usual way, FAT32 partition marked as active. Ran UUP dump for the "Feature update to Windows 10, version 1903 (18362.145) amd64". I mounted the ISO file and copied the files and folders to my FAT32 formatted USB flash drive. I got an install.wim file that contains:
    Code:
    T:\sources>dism /get-wiminfo /wimfile:install.wim
    
    Deployment Image Servicing and Management tool
    Version: 10.0.18362.1
    
    Details for image : install.wim
    
    Index : 1
    Name : Windows 10 Home
    Description : Windows 10 Home
    Size : 14,601,642,171 bytes
    
    Index : 2
    Name : Windows 10 Pro
    Description : Windows 10 Pro
    Size : 14,794,253,163 bytes
    
    Index : 3
    Name : Windows 10 Home N
    Description : Windows 10 Home N
    Size : 13,787,505,776 bytes
    
    Index : 4
    Name : Windows 10 Pro N
    Description : Windows 10 Pro N
    Size : 13,981,669,556 bytes
    and

    Code:
    T:\sources>dism /get-wiminfo /wimfile:install.wim /index:2
    
    Deployment Image Servicing and Management tool
    Version: 10.0.18362.1
    
    Details for image : install.wim
    
    Index : 2
    Name : Windows 10 Pro
    Description : Windows 10 Pro
    Size : 14,794,253,163 bytes
    WIM Bootable : No
    Architecture : x64
    Hal : <undefined>
    Version : 10.0.18362
    ServicePack Build : 145
    ServicePack Level : 0
    Edition : Professional
    Installation : Client
    ProductType : WinNT
    ProductSuite : Terminal Server
    System Root : WINDOWS
    Directories : 19685
    Files : 89891
    Created : 6/9/2019 - 5:10:58 PM
    Modified : 6/9/2019 - 5:49:35 PM
    Languages :
            en-US (Default)
    The isntall.wim file is 3,778,296 KB or 3.6 GB which is no where near the FAT32 single file limit.

    Then, whatever computer you want to upgrade, you insert the USB flash drive and run setup.exe from it.
    Last edited by NavyLCDR; 1 Week Ago at 21:45.
      My ComputerSystem Spec


 
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