Modified Windows_8 ISO won't boot in VM after modification

Discussion in 'Windows 8 Installation' started by t1b4nhzw, Nov 18, 2015.

  1. t1b4nhzw

    t1b4nhzw New Member

    Nov 18, 2015
    Likes Received:
    I extracted a Windows_8 ISO and made some changes to ei.cfg. I recomposed the sources back to a bootable UDF ISO but this ISO fails to boot in a VM. I get a blank screen during boot.

    Interestingly if I extract the same ISO and recompose it back again without doing any modifications then the ISO boots.
  2. ussnorway

    ussnorway Windows Forum Team
    Staff Member Premium Supporter

    May 22, 2012
    Likes Received:
    I'd upgrade your tools, W8 is different to W7 and you can't use the same tools i.e, using windows 7 Upgrade tool will not work.

    • Also a tipical W8 disc has two boot files... the bootmgr or the efi...and a 32bit system may need the bootsect.exe file before you can install it on a 64bit vm.
    Old boot format guide = UEFI Bootable USB Flash Drive - Create in Windows

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