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Difficulty: MediumOS Installation and Upgrade Methods

A systems administrator is preparing to perform an in-place upgrade on several corporate desktop computers from 64-bit Windows 10 Pro to Windows 11 Pro. During a pre-upgrade audit, the administrator finds that the system drives use the Master Boot Record (MBR) partition scheme, even though the motherboard firmware supports UEFI, Secure Boot, and TPM 2.0. To meet Windows 11 installation prerequisites without losing existing user files or requiring a clean operating system reinstall, which command-line utility should the administrator run first to prepare the drive partition style?

  1. mbr2gpt /convert /allowFullOSAnswer
  2. B
    convert C: /fs:ntfs
  3. C
    diskpart followed by the clean and convert gpt commands
  4. D
    dism /online /enable-feature /featurename:UEFI-Boot

Answer

The correct action is to execute mbr2gpt /convert /allowFullOS.
The correct command is mbr2gpt /convert /allowFullOS. Windows 11 mandates UEFI firmware mode, which in turn requires the storage drive to use the GPT partition scheme. The Windows built-in MBR2GPT tool safely modifies the partition structure from MBR to GPT without wiping user files, applications, or OS configurations. Adding /allowFullOS enables this execution while running inside the full Windows 10 environment.

Step-by-Step Solution

1
Identify the Windows 11 installation requirement.
Windows 11 requires UEFI boot mode, which necessitates a drive partitioned with the GUID Partition Table (GPT) layout.
Systems booting legacy MBR partitions cannot enable UEFI mode directly without repartitioning or converting the drive.
2
Select the appropriate non-destructive conversion utility.
The Windows MBR2GPT tool converts an MBR disk to GPT without modifying or deleting data on the disk.
Running the tool with the /allowFullOS switch enables the conversion process directly from within the running Windows environment.
3
Complete firmware reconfiguration.
After conversion, reconfigure the system firmware from Legacy BIOS mode to UEFI mode.
This allows the system to boot successfully from the newly created GPT partition structure under UEFI before launching the Windows 11 setup.

Key Concept

Partition Scheme Conversion for Windows Upgrades
Estimated Time:1m 30s
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Topics

OS Installation and Upgrade Methods

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