The National Archives
Search our website
  • Search our website
  • Search our records
   
 
Image of software box and CD PRONOM
Welcome (PRONOM home page) About PRONOM Add an entry
Search Help - opens in a new window Information resources - opens in a new window
 
 
 

*Details: File format summary

    
 

 

Search by keyword Search by file format Search by PUID Search by software Search by vendor Search by lifecycles Search by Migration Pathway

Details for:

Save as... XML | CSV Printer friendly version
 
Go to:  Summary  |  Documentation  |  Signatures |  Compression  |  Character encoding  |  Rights  |  Reference files   Properties  
 

Signatures
External signatures File extension: iso
File extension: toast
File extension: dmg
Internal signatures
Name Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image sig.1
Description BOF; Offset: 0; Magic Bytes: wildcard bytes between 0 to 16 bytes, followed by 0x45520200, an exact 508 wildcard bytes followed by 0x504D BOF; Offset: 32768; Max Offset: 103236; Magic Bytes: 0x4344303031, then wildcard bytes between 1 to 16384, followed by 0xFF4344303031 BOF; Offset: 32768; Max Offset: 69632; Magic Bytes: 0x00424541303101, then an exact of 2041 wildcard bytes, followed by 0x004E535230, then either 0x32 or 33 followed by 0x01
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value {0-16}45520200{508}504D
Position type Absolute from BOF
Offset 32768
Maximum Offset 103236
Byte order  
Value 4344303031{1-16384}FF4344303031
Position type Absolute from BOF
Offset 32768
Maximum Offset 69632
Byte order  
Value 00424541303101{2041}004E535230(32|33)01
Name Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image sig.2
Description BOF; Offset: 0; Magic Bytes: wildcard bytes between 0 to 16 bytes, followed by 0x45520800, an exact 2044 wildcard bytes followed by 0x504D BOF; Offset: 32768; Max Offset: 103236; Magic Bytes: 0x4344303031, then wildcard bytes between 1 to 16384, followed by 0xFF4344303031 BOF; Offset: 32768; Max Offset: 69632; Magic Bytes: 0x00424541303101, then an exact of 2041 wildcard bytes, followed by 0x004E535230, then either 0x32 or 33 followed by 0x01
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value {0-16}45520800{2044}504D
Position type Absolute from BOF
Offset 32768
Maximum Offset 103236
Byte order  
Value 4344303031{1-16384}FF4344303031
Position type Absolute from BOF
Offset 32768
Maximum Offset 69632
Byte order  
Value 00424541303101{2041}004E535230(32|33)01
Top of page Top of page
 
         
The National Archives Newsletter Icon

Send me The National Archives’ newsletter

A monthly round-up of news, blogs, offers and events.

Sign up
About our privacy policy