Convert to GPT Disk Grayed Out in Windows Disk Management

[beginner AY]

I have initialized a new disk (D) which is not boot disc (C) as MBR, but after reading online it seems better to initialize at GPT as im running windows 11. However, when i attempt to convert the disk from MBR to GPT in disk management, the GPT option is grayed out.Note, i have not partitioned the disk and its a Samsung 970 EVO Plus NVMe M.2 SSD 1TB.Here is a link to the instructions i followed in windows support - Convert an MBR disk to GPT.https://learn.microsoft.com/en-US/troubleshoot/windows-server/backup-and-storage/support-for-hard-disks-exceeding-2-tb

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