Per the Microsoft technet, the size of an MSR is 128 MB. But Mircosoft doesn't tell us if the size can be changed.

I have a question, does it still work well if create the MSR Partition with 200MB or 300MB+?

• Edited by JZYPAY Saturday, March 07, 2015 10:11 AM change the title

Hi JZPAY,

We can refer to the following link to create the MSR partition and configure the size as we prefer .

Create partition msr

https://technet.microsoft.com/en-us/library/cc770438.aspx

Here is another link for understanding MSR .(Pay attention to "What is a Microsoft Reserved Partition (MSR)? " part)

Windows and GPT FAQ

https://msdn.microsoft.com/en-us/library/windows/hardware/dn640535(v=vs.85).aspx

Best regards