NtOpenPartition - NtDoc

#ifndef _NTMMAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)
#if (PHNT_VERSION >= PHNT_THRESHOLD)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtOpenPartition(
    _Out_ PHANDLE PartitionHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ PCOBJECT_ATTRIBUTES ObjectAttributes
    );

#endif
#endif
#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwOpenPartition(
    _Out_ PHANDLE PartitionHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ PCOBJECT_ATTRIBUTES ObjectAttributes
    );

#endif
View code on GitHub