New install of w10 only has a 50mb reserved system space.

[Chabsy]

A new to system only has a 50mb reserved system space.
I got this system a few days ago. I've added a nvme drive, and want to install the os to that. When I run the install i from a USB stick the install goes ok but the reserved system space seems too small.
The system is a asrock b450 steel legend a with a r5 5500. And the nvme is a wd black 850x 1 tb

I can't see anyway to increase the size.

Thanks

 

[chaparral]

One of my system volumes is 100mb with 32mb used & 67.9 mb free

 

[Chabsy]

Ok think i have worked out what went wrong. I booted from a flash drive to install windows, i should have selected UEFI as a boot drive but i selected USB which meant a legacy install.