Skip to content

PowerISO Direct-Access-Archive image (.daa)

.daa file signature | application/octet-stream

PowerISO Direct-Access-Archive (DAA) is a disk image and archive format developed and maintained by PowerISO Computing, Inc. It is used to store optical disc images for mounting, extraction, backup, and distribution of software or media files in PowerISO and compatible tools. The format is generally safe, though like other image archives it can contain large or malformed content; it is also less commonly used than standard ISO images.

Safe

Magic Bytes

Offset 0
44 41 41

Sources: Wikipedia

All Known Signatures

2 signature variants are documented for .daa files across multiple sources.

Hex Signature Offset Sources
44 41 41 0 Wikipedia
44 41 41 00 00 00 00 00 0 Gary Kessler

Extension

.daa

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .daa files in Python

Python 
def is_daa(file_path: str) -> bool:
    """Check if file is a valid DAA by magic bytes."""
    signature = bytes([0x44, 0x41, 0x41])
    with open(file_path, "rb") as f:
        return f.read(3) == signature

How to validate .daa files in Node.js

Node.js 
function isDAA(buffer: Buffer): boolean {
  const signature = Buffer.from([0x44, 0x41, 0x41]);
  return buffer.subarray(0, 3).equals(signature);
}

How to validate .daa files in Go

Go 
func IsDAA(data []byte) bool {
    signature := []byte{0x44, 0x41, 0x41}
    if len(data) < 3 {
        return false
    }
    return bytes.Equal(data[:3], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .daa file?

A .daa file is a PowerISO Direct-Access-Archive image file. PowerISO Direct-Access-Archive (DAA) is a disk image and archive format developed and maintained by PowerISO Computing, Inc. It is used to store optical disc images for mounting, extraction, backup, and distribution of software or media files in PowerISO and compatible tools. The format is generally safe, though like other image archives it can contain large or malformed content; it is also less commonly used than standard ISO images.

What are the magic bytes for .daa files?

The magic bytes for PowerISO Direct-Access-Archive image files are 44 41 41 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .daa file?

To validate a .daa file, read the first bytes of the file and compare them against the known magic bytes (44 41 41) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .daa files?

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

Is it safe to open .daa files?

PowerISO Direct-Access-Archive image (.daa) 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.