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Windows/DOS executable file (.drv)

.drv file signature | application/octet-stream

Safe

Magic Bytes

Offset: 0
4D 5A

Windows/DOS executable file(SeeThe MZ EXE File Formatpage for the structure of an EXE file,with coverage of NE, TLINK, PE, self-extracting archives, and more.)Note:MZ are the initals of Mark Zbikowski, designer of the DOS executable file format.

Sources: Gary Kessler

Extension

.drv

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .drv files in Python

Python 
def is_drv(file_path: str) -> bool:
    """Check if file is a valid DRV by magic bytes."""
    signature = bytes([0x4D, 0x5A])
    with open(file_path, "rb") as f:
        return f.read(2) == signature

How to validate .drv files in Node.js

Node.js 
function isDRV(buffer: Buffer): boolean {
  const signature = Buffer.from([0x4D, 0x5A]);
  return buffer.subarray(0, 2).equals(signature);
}

How to validate .drv files in Go

Go 
func IsDRV(data []byte) bool {
    signature := []byte{0x4D, 0x5A}
    if len(data) < 2 {
        return false
    }
    return bytes.Equal(data[:2], signature)
}

API Endpoint

GET /api/v1/drv
curl https://filesignature.org/api/v1/drv

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .drv file?

A .drv file is a Windows/DOS executable file file. Windows/DOS executable file(SeeThe MZ EXE File Formatpage for the structure of an EXE file,with coverage of NE, TLINK, PE, self-extracting archives, and more.)Note:MZ are the initals of Mark Zbikowski, designer of the DOS executable file format.

What are the magic bytes for .drv files?

The magic bytes for Windows/DOS executable file files are 4D 5A at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .drv file?

To validate a .drv file, read the first bytes of the file and compare them against the known magic bytes (4D 5A) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .drv files?

There is no officially registered MIME type for .drv files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .drv files?

Windows/DOS executable file (.drv) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.