O&O Software DiskRecovery 7 Admin Edition User's Guide download pdf (Page 31)

File types and signatures

O&O DiskRecovery-27

File types and signatures

O&O DiskRecovery can recognize over 300 different versions of file types. A complete list of these file types can be

found in the section entitled List of Supported file types.

Moreover, you have the ability of adding your own signatures. O&O DiskRecovery can use these user-defined sig-

natures for its scan.

If you notice an important file type is missing from the current list and should be included, please give us three exam-

ples of this file type with a short explanation and send them to support@oo-software.com. We will then incorporate this

file type into the new version of O&O DiskRecovery. Please note that we are not liable for any data sent to us. If you

have any questions regarding this, please feel free to contact our Technical Support.

Adding Your Own Signatures

After starting O&O DiskRecovery you can open the dialog box to add your own user-defined signature.

After the dialog box appears, please enter the File Extension for the new signature (e.g. DOC for a Word document). In

the Short Description, you may enter a small narrative regarding this file type.

The Start Position defines the offset of the signature calculated from the beginning of the file. For instance, if the sig-

nature is to begin from the third character, then enter a 3 here. Otherwise, enter 0 when the signature is to stand at the

beginning of the file.

The use of place holders is also a possibility while defining a signature. A place holder stands for any user-defined char-

acter in the signature. For this, you need to activate Use Place holders. Afterwards you can define "?", "*", or any

other character as your place holder.

In the field labeled Signature you can enter the distinct character chain that is used to identify the file type. This can be

entered using any ASCII characters. If you would like to enter a special character that can not be expressed through

normal text, enter a dollar sign instead. Following the Dollar sign enter a two-digit Hex value in place of the character.

For example, if you would like to add a line break (Carriage Return corresponding to ASCII Code 13), then you would

have to enter '$0D'. Entering a '$$' will produce an actual Dollar sign.

It is also possible to enter Hexadecimal Values. For non-displayable characters it is recommend using only Hex-

adecimal values.

After you have finished entering the signature, it is necessary that you save it. Please note that all user-defined sig-

natures must be saved either to the O&O DiskRecovery program folder or to your 'My Documents' folder for them to be

found and loaded when the program starts.

If you would like to change a signature already created and incorporated into O&O DiskRecovery, simply load the

desired signature and save it again with the desired changes.

Tip: Detailed information on how to create signatures are available on our Website.

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O&O Software DiskRecovery 7 Admin Edition User's Guide Page 31