Why can’t I create a D drive for data?

I have bought a refurbished Lenovo Thinkpad with a 2TB ssd. I think it had Windows 11 on it originally but they made it Windows 10 as that was what t requested (not sure if that is relevant).

I can see 4 partitions using CMD:

  • Partition 1 System 100MB – FAT 32 – “System”
  • Partition 2 Reserved 16MB – “Reserved” (hidden in disk management)
  • Partition 3 Primary 1907GB (C drive) NTFS “Primary” & “Boot”
  • Partition 4 Recovery 560MB – NTFS – “Recovery”

Everything seems to be in the C partition, the boot up and file space.

I want to create a D drive separate for my files as it’s easier to do a quick back up my way.

So using disk management I shrunk C and created free space of 500GB but when I use simple volume to name it, it says not possible as I have “the max number of partitions”, but the drive has a GPT partition table so I should be able to have lots of partitions, so why am I being blocked?

Block message from Disk Management:

block message from Disk Management

screenshot windows

diskpart