Page 3 - CD-ROM - Invalid MS-DOS function?

Appreciate the feedback, unfortunately that's the FIRST thing i tried lol. Bout to hafta reinstall XP to see if that corrects the issue.

My money is on Drivers.

I'm having similar problems.

I've got backups that I KNOW were good, back when they were burned onto high quality CDR discs (Maxell, Fuji, etc...).

It's been a long time since they were created (1999). Regardles, most of the backups that I have are reading back fine.

I've got six CDRs that are issuing the "Invalid MS-DOS function" error for certain files. All files are .WAV files.

I get this whether or not I have my anitivirus program running.

I have three computers.

- Two Windows 2000 machines. Each with a different brand of DVD-Writer. Win2000 box 1 has an LG drive, and Win2000 box 2 has a Sony drive (likely an LG as well, re-branded).
- One Windows 98se machine with the same drive that was used to burn the CDs in the first place. The Windows 98se machine is just a stock Win98se install (as it always was). It has not been updated, and is not on the net.

Get this...

Windows 2000 box 1 and the Windows 98se box will not copy these particular CDRs to the hard drive. They both issue the "Invalid MS-DOS function" error (so, I don't think it's the operating system at fault, per se.).

However, Windows 2000 box 2 has no trouble copying these discs to the hard drive. And, once I did, I copied the files back to the other two machines using a USB stick. The files worked great on all machines from the USB stick and the hard drives.

This proves that the CDR discs are fine. No scratches on them, good quality, not over-burned.

I'm still trying to figure out the source of the issue.

So far, I'm wondering if it's:

a) Some type of virus that messes with a machine's optical drive accessing scheme.
b) A driver issue (as suggested by another forum member).
c) Something that I haven't thought of yet.

Here's something else that's odd...

I have four backups of one of the files that won't copy over. Each backup is on a different CDR. Various brands. All backups from the same year.

All four files error out at exactly the same point in the copying process, even though the directory structure for each backup is different. All backups have standard filenames and a fully compliant file-structure.

All four files copy fine on the second Windows 2000 machine.

The successfully copied files work perfectly.

Any ideas?

help is on the way, hold tight, don't throw your disks out! we should have a solution for you soon

At least in my case, this error does not appear to be OS / Hardware related. Copying the file fails on a Mac as well as my XP machine.

I got the same invalid DOS function when trying to copy large AVI files from 5 CDs burned on a 24x max speed burner on a Dell Latitude laptop (Yeah, it overheats like a sonofabitch). I could only view 3/4 of each video and the last 4th was unviewable. All of the videos were 650-700+ Mb in size. None of the image/ extraction, multiplatform, multicomputer recovery techniques worked to recover the files. I did however make new copies of the videos that work perfectly with the same burner. On the same exact media from the same exact package. Before burning the CD's I 1.) turned off the virus protection (AVAST Home). 2.) Slowed the burn speed down to 4x (and then later to 8x on other CDs). I don't know if the virus protection stuff actually matters. I actually think it does not. I do think lowering the burn speeds will cure many peoples ills. Like all of these pain in the ass problems there are probably a number of different causes that produce the same result. Good luck, hope this helps some folks.

I also joined because of this topic. This thread comes up as the first or second google find.
I hope that I can help somebody out there the way everybody else here tried to help me. Unfortunately, I am not able to get past this problem, sorry (it sucks).

My situation: I have a mov file (I think - on this computer it is unrecognizable) which is 3.51 gigs. It was placed onto a 4 gig dvd-r. The original file is a movie that was transfered from a mini DV video recorder via final cut pro, firewire connection. The file became 10 gigs and my plans lead to plan Z(all others fell through) which is put them on cds or dvds. I cut the vid up into 3 vids and tossed each on a dvd. I was able to put 2 of the dvd files onto my computer at home (which is a pc, but i dont believe this is the problem) but one dvd causes this error at 8%. I no longer have the original file because I used a friends mac to get the video, and it has been deleted.

I have tried extracting using IsoBuster and also PowerISO (*.iso, and also I tried extracting as *.baa and *.bin (i dont know what these are, but i tried)) but both have not worked.

I have tried with my antivirus' off, and also extracting like the ways stated above with the antivirus turned off. This also does not affect the outcome.

I have yet to try this on another computer (I will asap), but fear the same outcome.


My thoughts on how this problem works:
I don't know too much about computers, but enough.
-i think somebody stated this may be a virus. I do not believe this to be true at all.
-OS problem or DVD/CD problem? As stated earlier, this does not seem to be a problem with either. But I am not sure of this. So, is it a driver problem? This seems logical, but nobody seems to have come up with a solution relating to the drivers. Unfortunately, I do not understand my optical drive drivers enough to tamper with them.
-file... It would make sense to me that this is a problem with very large video files... but reading this thread I can see that it occurs with much smaller files, 900mb, 100mb, 2mb, and also non video files. So I have concluded that it is not a file size problem.
-So what files? I believe it to be some sort of video or audio related file, any size.
-compatibility between OS's... I don't believe this is part of the problem. I have had 2 successful copy/transfers. I do run XP Pro SP2. I don't know much about macs, but the one I used was a laptop and the owner said it was 23 hundred...so a good one.
-"The file is totally destroyed and that is why the error is occuring...duh!" I also don't believe this is the problem. Simply (and solely) because people here seemed to have gotten past it! This gives me some hope, but I am still stuck.

This is all I have come up with right now. I will try my o so great luck on another computer ASAP. If nothing happens I will try to learn some stuff about my drivers and attempt to work on that aspect. I guess I'll report back with my developments then.

Thanks to the people who helped. Sometimes the internet is better than the most beautiful women after having the greatest adrenaline rush and then eating the best meal of your life (btw this has never happened). Hopefully somebody will figure this out, and I hope my input helped.

I have since done a few test burns with Avast anti-virus up and running. It still works fine as long as the burn speed is in the 4x-8x range. A further observation is that I think it really doesn't matter what kind of file it is or what size the file is. I think larger cd project burns will be more likely to have this error be it 100's of small files or one huge file.

Hey guys i found this post so i thought i would post my same issue.

here is the situation:

intel computer was running windows 2003 for longest time.
decided to format and clean up system.
now on a fresh install no drivers for some reason i go to copy the contents of the windows 2003 cd and it keeps stopping at 1 file.
netmap.inf
D:\Windows 2003\386\WINNTUPG\OEM\DIGI\ISDN\PRI\netmap.inf.
here is the file info.
***********************************
; -----------------------------------------------------------------
; netmap.inf
;
; Digi ISDN PRI cards
; -----------------------------------------------------------------

[version]
signature="$Windows NT$"

[OemNetAdapters]
; ----------------------------------------
; Digi ISDN PRI Cards
DigiDataFirePRIme = 0,DigiMap

[DigiMap]
ValueName=DeviceId
ValueTYpe=4
PCI\VEN_114f&Dev_000c = 12
PCI\VEN_114f&Dev_000a = 10
PrimeT1ISA = ValueNotPresent

[OemUpgradeSupport]
; ----------------------------------------
; Digi ISDN Cards
PCI\VEN_114F&DEV_000C = digpriup.dll
PCI\VEN_114F&DEV_000A = digpriup.dll
PrimeT1ISA = digpriup.dll
*******************************

i have tried the cd on many other computers and no problem.
also have replaced many cd\dvd roms, memory, hard drives, ide cables.

i have no clue what is going on but i think it maybe a bad motherboard issue.

and yes i have checked the burning specs. its the same way i have been burning for years.


any help would be greatly appreciated.
crazydrve

Test your cd drive further. Can you play music. Copy other files from other CDs? My guess is you CD drive driver is not correct/ correctly installed. Try downloading driver from manufacturer's site and reinstall?

Hey, guys, I joined this forum after reading through the three pages to see if anything would work. The ISOBuster, turning off your anti-virus, etc, etc. I found my own solution that may be easier than all of that, except maybe turning off your virus-software, but that depends. I've seen some people use up to 5-6 programs at a time, depends on how picky you are.

Anyway, I used a zip program. It's called 7z or 7Zip. The file on my disc was a 255meg AVI file that was overburned on a 700mb disc on a 2001 WinXP Machine. Here I am in 2007 trying to pull this file off of the cd and it says Invalid Function: MS-DOS. Just right-click-drag the file to your folder and add it to archive. Worked perfectly. I'm not sure if other Zip programs will work, but if all else fails, try the 7zip.

Specs? WinXP SP2, Anti-virus ON, DVDburner-drive.

Thanks.

Hmmm.... If it successfully copied from the CD/DVD when using an archiving application, then it sounds as though it's ultimately a software-based issue. Or perhaps the archiving process changes the rate that the drive is required to read the data back to the hard drive. I'm still getting intermittent MSDOS Function errors on my discs as well. From the number of responses out there, this issue seems to be epidemic. I suppose five years from now, manufacturers will tell us the real story as to why this has been happening.

Thanks for the additional info. I'm still convinced that the files themselves are not corrupted.

Hi all.

I get this error with CD or DVD within burning capacities or overburning. I have used Nero, Win CD, Alcohol120, Windows, Whatever I can find. This has got to be an issue with Windows itself. Unforunately, I am not experienced enough to find out how this can be resolved. I have used official and un-official software, both windows and applications. Nothing makes a difference. Mostly, I back up Apps, and Karaoke, ie CDG. Before SP2 it did not happen as much. Make of that what you will.

Hope this can spark some inspiration in someone!!

Zodiac.

Hi all, I get this error too. I have two 4.7GB DVD's. On them are a range of files. Files in the formats MP3, WMA and RM and Real Player Video files.

Trying to copy the files to my hard drive in order to sort and change the format (where necessary) so that they can all be copied to and played on my Archos Gmini 402 device has given me 2 problems.

On the first disc I managed to copy about 5% to my drive, the rest neither play nor will they copy. Sometimes I get the cyclic redundancy message, sometimes I get a message saying that there is something wrong with the parameter (even with right click, copy, paste)

On the 2nd I copied again maybe 5% of the files and now I get the Invalid MS DOS function message. These file do play via WMP/Real Player.

I have tried all the solutions offered and nothing works. Any other ideas??

Well I just tried the 7zip method, but I got an error.. *cry*. I also tried with winrar.

Has anyone figured out how to solve this problem yet? *desperate*. I've tried pretty much every suggestion everyone has made on the entire internet, lol.

Thanks.

Oh, some details:
I'm trying to pull a 450mb avi file from a DVD I burned at 4x. I have updated firmware/drivers for the burner. The DVD is still in perfect condition, since I burned it only a few days ago. Not a single scratch or scuff. The disc is DVD-R Maxell brand 4.7gb with 16x burn speed capability.

..
I just had a thought. I noticed the file I'm trying to copy is the only file on the DVD that has all capital letters in the file name (besides the file extension of course). Could it be something to do with that? All of you having trouble, see if the file you are trying to copy is in all caps.