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.mdf file extension

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.mdf

1. The recommended file extension for a primary data file for a SQL Server database.

2. Media Descriptor File. CD Image file created using Alcohol 120%, that holds the image of a CD.

Alcohol 120% can be used to copy copy-protected CDs/DVDs and one common technique in copy-protection is to use intentionally defective sectors on the CD/DVD. The Alcohol 120% .mdf/.mds format allows defective sectors to be stored, whereas other popular formats such as .iso, .bin and .nrg do not.

cf .mds

Relevant links:

www.alcohol-soft.com - Home page for Alcohol software.
www.magiciso.com/tutorials/miso-magicdisc-overview.htm - MagicDisk is a freeware application that supports .mdf (and .mds) files, allowing these to be opened. It does not allow the .mdf files to be edited, but this can be achieved using their paid MagicISO product.

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Can you add to this? Do you know of any applications not already listed that will open or work with this type of file? Can you contribute any additional file format information? Please report any errors or omissions by e-mail to feedback@cryer.co.uk.