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What is an *.MDF file ?


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What is an *.MDF file?


If it is a rather large file, e.g. 650 MB, then it is most likely a CD image. If it is a file of smaller size, see at the end of this article. These MDF image files are created using a CD/DVD CD/DVD image file editor (and CD burner and CD/DVD backup tool) called MagicISO Maker.
MagicISO Maker can directly create, edit, extract, and burn ISO/MDF files. It also can convert almost all CD/DVD image formats to ISO/BIN/CUE, Nero (.NRG), and CloneCD (.CCD/. IMG/. SUB). With MagicISO, you can handle DVD image up to 10GB; make CD image files from CD/DVD-ROM; also can burn ISO files and other CD/DVD image files (BIN, IMG, CIF, NRG, BWI, VCD) to CD-R/RW; support loading boot image file exported by WinISO and UltraISO; burn CD image files in ISO9660, Joliet, and UDF format; edit properties of CD/DVD image files; it has the ability to correct volume serial number after editing original CD/DVD image file; search files or directories with wildcard characters in CD/DVD image file.

You can download it here:

Not a CD image file?

If you cannot open your MDF file with Magic Iso Maker, then it may be a database file. dBase used to store their memo fields in a separate file. Regular tables were stored in *.dbf files, memo files were stored in *.mdf files.

SQL Server 2000 creates MDF files as well.


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2005-12-07, 12:43:48
HOT_SEX_MONSTER from United Kingdom  
Here's how to use the .mdf file. Alternatively you can use alcohol 120% to mount the .mdf then use it to copy that drive into an iso!
To burn the .mdf either use a program that burns them to a disc or do the opposite of the above procedure to get and iso. Then burn the iso onto a disc!

Here's what I do....

I use Daemon tools (google for download) to mount the image on the computer and then i run it.

Break it down....

Install Daemon. Run it. Right click on the icon in the system tray (the set of icons in the bottom left of the screen with the time in) then go to virtual cd/dvd-rom then whatever device you want to use then mount image and browse to the file then press ok. Now open up my computer and it will say there is a new cd drive and that it has the disc you just mounted in it.

What did I just do????

You just got Daemon tools to trick your computer into thinking there is another cd drive with the disc in! This is useful if you have a game and have lost the first disc. Normally this would mean you can't play it, but with the mounted disc you can then play it without needing disc 1! Also means you don't need to find the disc when u want to play the game!
2006-07-24, 10:09:32
anonymous from United States  
Look, this is all explained in like the third post here. Alcohol 120% does not technically support MDF files, but if you go to mount the virtual drive and change the type to 'all files' the MDF files will show up and you can mount them anyway. From there, if desired, you can copy the virtual drive to a more common image format or to a physical drive. That's all
2006-12-23, 04:44:13
Neeshu from India  
Just open .mdf file with winrar or ultra iso and extract the data no need to mount or what ever

u will get ur data
2007-04-08, 06:54:03
anonymous from Sweden  
Okay will someone fucking answer this? I downloaded a game for the epsxe emulator. I open the folder, and it contains two files, .mdf & .mds . I extracted the data from the .mdf file using either magicISO or some other program. There were many different files. So, after extracting, I tried to run the only .img file on my epsxe, but it only came to a black screen. Wtf am I doing wrong?! Could someone PLEASE help me?
2007-04-08, 07:13:59
anonymous from Sweden  
hehe nevermind, problem solved =] funny thread, btw.
2007-04-09, 09:05:49
anonymous from Australia  
say i have a 3.7gb file full of mdfs do i just burn them onto a dvd then itll work like a normal game dvd?
2007-04-10, 19:26:43
anonymous from United States  
ok people it seems like there are a lot of problems here... im to lazy to go through to see if they are answered and just want to help. Since your downloading illegally anyways... find a torrent for a newer version of 'Alcohol 120%' drag the MDF (the really big one) and the MDS (the tiny one) into the alcohol window. there is usually 1 mdf and 1 mds per disc of the game/program ur downloading e.g.- Black & WHite 2 is a four disc game.... i should have a disc 1 mdf, disc 1 mds, disc 2 mdf, disc 2 mds, disc 3 mdf, disc 3 mds, disc 4 mdf, and last (thank god) a disc 4 mds. Get only one disc worth of files in alcohol at a time (so disc 1 mdf and disc 1 mds) you should only see an mds file in the window but unlike regular mds files it will be the size of the mdf (genereally big)goto burn a CD/CD-ROM/DVD and burn the mds file to the disc.... when your done... congrats!!! you burned the first disc of your download! Now a lot of people are going to say... well i wanna play without the cd... well if its a game you can just go to and search a 'No cd patch' this will allow you to play without the cd. well im out
2007-04-11, 00:56:22
anonymous from Canada  
Dude...from the not going to a noob too...but you are great help and funny as hell...thxs a bunch man for taking the time to make us alittle bit more computer literate
2007-04-13, 13:53:36
anonymous from Leeds in Leeds, United Kingdom  
Right if someone could help would be great, i followed the steps in post 2 by sex monster.

The file i downloaded is a Rar file that contains an MDF and MDS file, when i try to browse for the file to mount it will only show the Rar files after selecting show all files.

I have tried these and when i click on the Drive E its says 'file may be corrupted etc'

I have also tried to convert the file using UltraIso again it does says 'unknown image'

I might be asking a really stupid queston here but can someone help.
2007-04-15, 03:32:28
anonymous from United Kingdom  

2007-04-18, 19:49:43
anonymous from United Kingdom  
Use magiciso.
2007-05-01, 04:34:47
anonymous from United States  
Please help!!! I just downloaded the Command and Conquer : Tiberium Wars game,
it came with 3 files CNC3.MDF CNC3.MDS and a file with stuff in it. The mdf file is about 8 gb and the mds and zip file are very small. I tried opening the zip file and it said it was like corrupted which sucked but I doubt the other two files are broken.. well hopefully. I Downloaded the DAEMON TOOLS and mounted the mds file (mds only showed up w/ default settings i tried mounting the mdf but made no difference) and tried to double click it in my computer to run it, but i got 'windows cannot read from the disk, the disk might be corrupted or using another format that is not compatible with windows'. Well does any have ne ideas w/ what i should do?? I dont have a DVD burner so i can't burn the files so Im trying to mount them yet i have no idea what im doing. DO i need to download any other applications or drivers to run a mounted file. is there a way i can extract / install the mdf file using another program and if so how.. well thanks, please help me out i spent like 2 days downloading it and i hope it wasn't a waste!!!!
2007-05-02, 00:31:55
anonymous from Philippines can i extract this .mdf file...teach me how tired of downloading this file yet i cant open me me guys..owe you guys a lot...

Keywords: man
2007-05-02, 03:14:48
anonymous from Australia  
ok boys what do i do?
i read the explanations and i opened my .mdf file. I mounted the image and installed the game, but when I try to open it, it says that I need to insert the original disc.
please help dude. I'd appreciate it a lot, thanks man.
2007-05-06, 11:16:57
anonymous from United Kingdom  
right done everything i've read so far and starting to get pissed off now i've converted a mdf to a iso burnt it to a cd using nero and now it installs but when i try play it it say's this program will not run without the cdrom in the drive error 1001 what the hell do i do now
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