1.    17 Apr 2016 #1
    Join Date : Apr 2014
    Posts : 627
    Windows 10 Pro Insider Preview (14971)

    ESDtoISO - any reason not to make compressed ISO?


    When using ESDtoISO to make a an installable ISO image from the install.esd file, one has the option of making a 'full' or 'compressed' ISO file. Is there any reason not to make the compressed iso? (The compressed iso fits on my nominally 4 GB USB stick, while the full iso does not.)

    TIA...
      My ComputerSystem Spec
  2.    17 Apr 2016 #2
    Join Date : Oct 2013
    A Finnish expat in Germany
    Posts : 13,114
    Windows 10 Pro

    Extract from the tutorial:

    Some facts to help you to decide, the numbers about Build 10041 ISO image created with this tool:

    1. WIM based ISO, Windows 10 Build 10041 32 bit, size 2.45 GB, ISO created from the ESD in 6:57 (Min:Sec)
    2. ESD based ISO Windows 10 Build 10041 32 bit, size 2.09 GB, ISO created from the ESD in 3:32
    3. WIM based ISO, Windows 10 Build 10041 64 bit, size 3.30 GB, ISO created from the ESD in 9:40
    4. ESD based ISO, Windows 10 Build 10041 64 bit, size 2.68 GB, ISO created from the ESD in 4:35

    Above times to create the ISO using this tool using an HP ProBook 4530S i5 laptop.

    Because the ISO based on ESD intead of WIM is more compressed and encrypted to save space, Windows needs to do more decompressing and decrypting when using it. The difference is not significant but to give you an example, installing Windows 10 to a Hyper-V virtual machine took using the 32 bit Build 10041 ESD based ISO (#2 in above list) 15 minutes (from boot to first Settings dialog after the installation), and using the same Windows version but a WIM based ISO file (#1 in above list) 12:35. Both virtual machines had exactly the same settings, the virtual hard disks were created on the same drive on host, and the host was not used for anything else during the installation.
    That's the difference, it's up to you to decide which version to use.

    Kari
      My ComputerSystem Spec
  3.    17 Apr 2016 #3
    Join Date : Apr 2014
    Posts : 627
    Windows 10 Pro Insider Preview (14971)
    Thread Starter

    Quote Originally Posted by Kari View Post
    Extract from the tutorial:



    That's the difference, it's up to you to decide which version to use.

    Kari
    Thanks for the info, Kari. For Build 14316, I'm getting 3.2 GB for the 64-bit ESD-based iso, and 4.0 GB for the WIM-based iso. I will put up with a slight installation time penalty in order to save a DVD. I'm too cheap to buy a bigger USB stick ;-)
      My ComputerSystem Spec

 


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