Understanding ESDs, ISOs, and File Hashes

Discussion in 'Chit Chat' started by Taliseian, Jul 3, 2015.

  1. Taliseian

    Taliseian MDL Junior Member

    Oct 13, 2013
    Since a good part of several pages in the 162 thread was about ESD, the ISOs made from them, and File Hashes...and since I'm a little confused myself...I figured I'd start a discussion here.

    If that was wrong, I apologize and please lock and/or delete the thread.

    I did the update from 158 to 162 via Windows Update and have only one ESD file on my drive.....install.esd in my $windows.~bt folder. I'm currently running the en-us build, 64bit.

    When I see the hashes for all the different ESD files, none of them match what I have. Also, none of the file hashes match for my ISO file after I decrypt it using Option 1 from the ESD Decrypter.

    So, I'm curious for an explanation as to why all the file hashes don't match. I'm a little confused about it all. If they're all "official Microsoft", should they match somewhere?

    Thanks in advance for helping this obvious n00b out....

  2. s1ave77

    s1ave77 MDL Guide Dog/Dev

    Aug 15, 2012
    #2 s1ave77, Jul 3, 2015
    Last edited: Jul 3, 2015
    The install.esd you will find in $Windows~BT is only a part of the ESD files delivered via WU for the Upgrade.

    To quote myself ....
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. coromonadalix

    coromonadalix MDL Senior Member

    Jul 21, 2009
    to make it short

    Any esd once extracted/decrypted to an iso will not have identical hash/crc etc... explained in a few posts here at mdl.

    The only guarantee is the crc / hash checks for the esd's ... nothing more.

    You grad the esd convert it with esd decrypter and burn an dvd for future use.