#ifndef _NTEXAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

/**
 * The NtDisplayString routine displays a Unicode string on the system display
 * during early boot or in environments where a console is not yet available.
 *
 * \param String A pointer to a UNICODE_STRING structure that contains the text to display.
 * \return NTSTATUS Successful or errant status.
 */
_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
NtDisplayString(
    _In_ PCUNICODE_STRING String
    );

#endif
#endif
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#ifndef _NTZWAPI_H

_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
ZwDisplayString(
    _In_ PCUNICODE_STRING String
    );

#endif
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NTinternals.net (undocumented.ntinternals.net)

Function NtDisplayString display specified string in text-mode (typically: blue screen).

Warning: Trying to display string without previously switch to text-mode results as system hang.

String

Pointer to UNICODE_STRING contains string to display. Some basic control characters are implemented (like CR, LF).

Documented by

Tomasz Nowak

Requirements

Privilege: SE_TCB_PRIVILEGE

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