If memory serves, you‘re looking for SHFormatDrive().

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Feb 8 ‘10 at 18:19

Jerry Coffin
   

Use the Format method of the Win32_Volume class. Details here.

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Aug 29 ‘11 at 8:36

Vijay Varadan

Sounds like you are looking for Disk Management Control Codes.

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Oct 7 ‘10 at 11:10

Luke

ThI have ended up using a combination of WMI & DeviceIoControl with the Disk Management Control Codes. This looks to be able to do everything that I want, except that currently I am having some issues with using the Win32_Volume Format method in C++, I am constantly getting a WBEM_E_INVALID_METHOD_PARAMETERS error. – Zac Shenker Oct 12 ‘10 at 4:36  
https://stackoverflow.com/questions/3879294/windows-c-c-drive-init-partition-format