12/21/2023 0 Comments Uefitool dsdt mod![]() ![]() These changes make sure that MDT doesn’t make the Lite Touch Windows PE the default, which the MBR2GPT tool doesn’t like. ![]() (In case you’re curious, check out the changes in the “AdjustBCDDefaults” function. A modified version of the built-in MDT script to support the “OS-PE-OS” task sequence. One thing that impresses me about these machines: You don’t need any extra software to configure the firmware, the settings are exposed in WMI automatically.) (I just happened to have Lenovo ThinkPad devices available for testing. A (very short) custom script to enable UEFI and Secure Boot on Lenovo PCs. A standard upgrade task sequence with extra steps added (modify firmware settings, convert disk layout) after the upgrade completes. There might be other places that these steps could be placed, but these worked well for me.Ĭonvert with Upgrade to Windows 10 Enterprise 1703 圆4. A standard refresh task sequence with extra steps added (modify firmware settings, convert disk layout) before the new OS boots for the first time.Ĭomments: The new steps are added right before booting into the new OS. (It will reboot automatically after the task sequence completes and you click “Finish” on the summary wizard.)Ĭonvert with Refresh to Windows 10 Enterprise 1703 圆4. A task sequence designed to be initiated from Windows PE (boot from USB or PXE, modify firmware settings, convert disk layout).Ĭomments: This is actually identical to the first task sequence, without the FinishAction that makes the machine reboot. ![]() (This is the only task sequence that requires the modified ZTIBCDUtility.vbs script.)Ĭonvert BIOS to UEFI (PE). A task sequence designed to be initiated from Windows 10 (any version) that performs the conversion from Windows PE (boot to PE, modify firmware settings, convert disk layout, boot back to OS).Ĭomments: Similar to the previous task sequence, with extra steps to get from the current OS to Windows PE and then back again. The “Lenovo” step has a condition that will only run it on Lenovo PCs you would need to add similar steps for other OEMs.Ĭonvert BIOS to UEFI (OS-PE-OS). A task sequence designed to run in the full OS (modify firmware settings, convert disk layout, initiate reboot).Ī few comments on this one: The “Convert” group has a condition that will only run if the machine isn’t presently using UEFI boot. But it does contain all the pieces you need:Ĭonvert BIOS to UEFI (OS). (Remember you can copy-and-paste between task sequences, if you want to copy the steps into your own task sequences.) I’ve stripped this deployment share down to the bare minimum, so you don’t need to download gigabytes worth of stuff, so don’t expect it be usable as-is. Extract the zip file, open it with MDT 8443 as a new deployment share, then look at the task sequences. So the attached zip file includes sample task sequences for all of these. This adds a couple of steps to the task sequence, adding steps after the new OS image has been deployed but before it has booted for the first time, running steps in Windows PE to convert the disk layout and to modify the firmware settings. This is actually very similar to previous processes: Complete the upgrade, then convert the disk layout and modify the firmware settings.Ĭonverting as part of a Windows 10 wipe-and-load (refresh) deployment. You could also boot to a Windows PE 1703 boot image, then run a simple task sequence that converts the disk and modifies the firmware, booting back into the OS when done.Ĭonverting as part of a Windows 10 upgrade. If you are running an earlier version of Windows 10, the process can be initiated from within Windows PE from the ADK 1703 release, requiring a little extra work: Reboot from the full OS into Windows PE, convert the disk layout, modify the firmware settings, then boot back into Windows 10. If you are already running Windows 10 1703, the process can be initiated from within the currently running OS, converting the disk layout and modifying the firmware settings, followed by a reboot. If you have a PC running Windows 10 with BIOS emulation, you can switch it in two different ways: I thought it would be useful to provide those as samples that you could use in case you want to perform this process using MDT.įirst, it’s worth pointing out that there are a few different scenarios that you might want to do:Ĭonverting an existing Windows 10 installation. , the new tool for converting disks from MBR layout to GPT layout as part of the BIOS to UEFI conversion process, you may have spied an MDT task sequence being used. First published on TechNet on Apr 14, 2017 ![]()
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