Invalid MS-DOS Function While Copying Or Deleting Files FIX [Tutorial]

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Invalid MS-DOS Function While Copying Or Deleting Files FIX [Tutorial]

Name of D-Word Value: CopyFileBufferedSynchronousIo
NOTE: “I” as in Ivan, Not Lima

The "Invalid MS-DOS function" function error, can occurred while copying or move files from one storage media to another. The error "Invalid MS-DOS function", can be faced on a Windows Vista computer if you 're trying to copy files from NTFS format to FAT32 format, or in all versions of Windows (Windows 10, 8, 7 & Vista) if the media you are copying from is damaged or corrupted.

This tutorial will apply for computers, laptops, desktops,and tablets running the Windows 10, Windows 8/8.1, Windows 7 operating systems.Works for all major computer manufactures (Dell, HP, Acer, Asus, Toshiba, Lenovo, Samsung).