Windows 10: Booting USB installation media on a UEFI system.

Page 3 of 3 FirstFirst 123
  1.    11 Feb 2015 #21

    Whilst not related to this Windows 10 forum, I had major problems using a UEFI Windows 7 USB boot disk.

    The initial installation worked perfectly on my standalone HD allowing me to install updates & applications until I added my MBR Data HDs. The new build was then not recognised with the following error message: 'Reboot & Select proper Boot device or insert Boot Media in selected Boot deice & press a key'.

    It was still not recognised even after I had removed all the MBR HDs & I could see no obvious way to repair the build other than a re-install which replicated the problem.

    Converting the GPT HD to MBR & re-installing Windows 7 created a situation where files were coped to the HD but on the first re-boot, the same error message was repeated.

    Even cloning a working Windows 7 build to this HD resulted in the same error.

    I used AOMEI Partition Assistant & then Diskpart/Clean to initialise the HD but no success.

    I then used the Windows installation DVD & to my surprise the installation was a success.

    No idea what was going on because previously that HD had a build of Windows 8.1 on GPT partition which worked OK; even restoring that build back to the HD failed.

    Can only conclude that are problems if you have a mix of GPT & MBR HDs with OS on them.
      My ComputerSystem Spec


  2. Posts : 11
    UEFI Windows 8.1 Pro x64
       12 Feb 2015 #22

    WightWalker said: View Post
    Whilst not related to this Windows 10 forum, I had major problems using a UEFI Windows 7 USB boot disk.

    The initial installation worked perfectly on my standalone HD allowing me to install updates & applications until I added my MBR Data HDs. The new build was then not recognised with the following error message: 'Reboot & Select proper Boot device or insert Boot Media in selected Boot deice & press a key'.

    It was still not recognised even after I had removed all the MBR HDs & I could see no obvious way to repair the build other than a re-install which replicated the problem.

    Converting the GPT HD to MBR & re-installing Windows 7 created a situation where files were coped to the HD but on the first re-boot, the same error message was repeated.

    Even cloning a working Windows 7 build to this HD resulted in the same error.

    I used AOMEI Partition Assistant & then Diskpart/Clean to initialise the HD but no success.

    I then used the Windows installation DVD & to my surprise the installation was a success.

    No idea what was going on because previously that HD had a build of Windows 8.1 on GPT partition which worked OK; even restoring that build back to the HD failed.

    Can only conclude that are problems if you have a mix of GPT & MBR HDs with OS on them.

    Problem is if your motherboard is not forced to boot only UEFI or only CSM
      My ComputerSystem Spec

  3.    12 Feb 2015 #23

    feherneoh said: View Post
    Problem is if your motherboard is not forced to boot only UEFI or only CSM
    Motherboard is a dual UEFI BIOS set to UEFI & Legacy.

    When I installed Windows 8.1, the only problem I had was that I had to let the installation determine the HD configuration was was from previously MBR to GPT. All this was done with making no changes to the BIOS & I could boot successfully between Windows 7 (MBR), Window 10 (MBR) & Windows 8.1 (GPT); these being the 3 OSs I had on the system.

    The problem came when I created a UEFI boot USB drive to see how easy it would be do a UEFI Windows 7 installation on the HD with Windows 8.1 previously installed - I was considering buying a 3TB Western Digital Black HD which I believe would have to be formatted as GPT to utilise the full 3TB. The installation was OK during the initial build when just 1 HD (GPT) was connected. When I connected the MBR data HDs, the UEFI version of Windows 7 refused to boot even after I had removed the MBR HDs. I found no way to repair the UEFI installation from the UEFI boot USB.

    Re-installing the UEFI version of Windows 7 was fine again until the MBR data HDs were added to the system.

    Realising that, for whatever reason this was not going to work, I then converted the GPT disk back to MBR to install Windows 7 which was when the installation got into a loop & at the first reboot started to load Windows into memory again. If, during the reboot, I used the BIOS boot to select the HD then the error message 'Reboot & Select proper Boot device or insert Boot Media in selected Boot deice & press a key' was presented.

    It didn't matter what I did, nothing appeared to work until, in desperation, I reverted to the Windows 7 installation DVD.
      My ComputerSystem Spec


 
Page 3 of 3 FirstFirst 123

Related Threads
Triple Booting in Installation and Upgrade
Hi, just joined forum. I've been on vista and seven forums awhile. I have a PC with three drives. One has Vista (my favorite OS - I'm one of those retro types); the other two have seven. (all home premium). The original drive has seven HP 64, and...
Hello all, I wonder if anybody can help me. Last weekend, overnight, my desktop machine apparently downloaded and installed the latest build of Win 10 Tech Preview. All previous builds had worked without problems. The next morning, when I...
Dual Booting in Installation and Upgrade
Hi, I've decided that I would like to dual boot Windows 10 TP (I know im late to the game) Now ive done dual booting before, but I was wondering if its any different, as my system has change to include a SSD which just has windows 7 and a HDD...
Hi there Remember if you are using VMWARE you can try out a UEFI guest even if your HOST doesn't support it. In the configuration file set the following firmware="efi" That's it !!!
Solved Tripple booting is this possible? in Installation and Upgrade
Tripple booting is this possible? Separate partitions no GPT partitions. I know how to do partitions Windows 7 32 bit Windows 10 Technical preview 32 bit Lubuntu 64 bit without UEFI (I deleted the UEFI install folder) Linux Swap partition

Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 05:40.
Find Us