Windows 8.1 Pro ISO - can we shrink/compress it?

Discussion in 'Windows 8' started by LQQL, Sep 15, 2013.

  1. LQQL

    LQQL MDL Addicted

    Apr 21, 2009
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    #1 LQQL, Sep 15, 2013
    Last edited: Sep 15, 2013
    Hi @ all,

    I need to know if is there any way to shrink or compress MICROSOFT.WINDOWS.8.1.RTM.X64.ENGLISH.DVD-WZT

    I only have a four gig usb flash drive and the ISO is too large :\

    Any possiblities to do so?!

    FYI: This is how i solved my problem:

    Got solved by me deleting efi folder from ISO per Ultra ISO and finally I got it on my so called 4gig flash drive...

    Figured I don't really need an efi folder because I don't have any UEFI at all. ;]

    I'm about to try what moderate had posted here:

    http://forums.mydigitallife.net/thr...nk-compress-it?p=807595&viewfull=1#post807595
     
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  2. PaulDesmond

    PaulDesmond MDL Magnet

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  3. MrAnalysis

    MrAnalysis MDL Senior Member

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    You can just extract the .wim and install via that. Another way is install over network.
     
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  4. WinDev

    WinDev MDL Expert

    Jul 6, 2013
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    Size of ISO is 3.63 GB, 4 GB flash drive size is 3.75 GB. So, I don't know how it's impossible for you to put Win8.1 RTM x64 install on 4GB USB. Try with tools which makes bootable USB. If you can't put ISO on USB on this way, use 8 GB USB drive (if you have it).
     
  5. PaulDesmond

    PaulDesmond MDL Magnet

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    OP is right with his problems as I said. Most so called 4 gig USB don't have that space available and all tools like Rufus, Power ISO et cetera give you an error saying that there is not enough space on the stick. Only high quality sticks like the one I showed above, a Toshiba Transmemory can deal with a 64 bit iso
     
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  6. Stannieman

    Stannieman MDL Guru

    Sep 4, 2009
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    Mine is 3.79, fingers crossed.
     
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  7. FaiKee

    FaiKee Misinformation spreader

    Jul 24, 2009
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    I think you can rip the wim so it has only index1(pro) or index2(core), don't know how much space could be saved.

    Another way is to re-compile the wim into ESD which has a higher compression. :p
     
  8. PaulDesmond

    PaulDesmond MDL Magnet

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    ESD is the structure that will come through winstore update because it is run from inside the W8. Only problem is that you cannot boot from it
     
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  9. WinDev

    WinDev MDL Expert

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    ESD is for Windows RT, right?
     
  10. PaulDesmond

    PaulDesmond MDL Magnet

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    in the above case it has nothing to do with RT
     
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  11. WinDev

    WinDev MDL Expert

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    I said that ESD is for Windows RT, like WIM for Windows 8, but OK.
     
  12. MrMagic

    MrMagic MDL Guru

    Feb 13, 2012
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    I've got a cheap £7 4GB Flash drive that works fine for Windows ISO installs

    NTFS uses more space, if you can use FAT32 you might get a small amount of space back, not sure if you can use FAT32 for Windows 7/8/8.1 installs though
     
  13. PaulDesmond

    PaulDesmond MDL Magnet

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    when using tools like Rufus or such, the file system automatically will be set to NTFS afaik
     
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  14. MrMagic

    MrMagic MDL Guru

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    Same with Microsoft USB Tool too

    Manually creating it using diskpart and then copying the setup files to the drive could do it
     
  15. PaulDesmond

    PaulDesmond MDL Magnet

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    best is when using the MS tool, it lets you wait until the end of the process and after 10 or 15 minutes working on the file it tells you that space ran out. Rufus and PowerISO gives you the error just at the beginning.
    By manually doing the job copying the setup files only, you cannot boot as far as I can see it
     
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  16. MrMagic

    MrMagic MDL Guru

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    Yea you can boot it if you go through the whole process properly, I've done it a few times

    --
    diskpart
    list disk
    select disk x ------ (x = being the disk number of your USB drive)
    clean
    create partition primary
    active
    format fs=fat32 quick
    assign
    Exit


    Then copy setup files to flash drive
     
  17. FaiKee

    FaiKee Misinformation spreader

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    #17 FaiKee, Sep 15, 2013
    Last edited: Sep 15, 2013
    Nah, you can use DISM in win8.1 to compile ESD and replace the wim, win8/8.1 installers can read ESD. :D

    Actually if you download a ESD from winstore or whatever, you would be given a choice to save it into a (bootable) ISO or USB FD.
     
  18. Tito

    Tito Super Mod / Adviser
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  19. FaiKee

    FaiKee Misinformation spreader

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    Yeah Tito, tks, that's what I meant. :D
     
  20. Stannieman

    Stannieman MDL Guru

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    Ultraiso uses FAT32 with writing an iso to usb, but it's not free.
     
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