ERROR_DRIVE_MEDIA_MISMATCH - 4303 (0x10CF)
The drive and medium are not compatible or exist in different libraries.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_DRIVE_MEDIA_MISMATCH with the numeric value 4303 and hexadecimal representation 0x10CF signifies that a drive or medium is not compatible with the current operation context. This typically occurs when attempting to mount, insert, or access a storage device that does not match the expected type or configuration.
Error Details
This error can arise in various scenarios where there is an inconsistency between the drive and the medium being used. For example, it might occur if a CD-ROM is inserted into a USB flash drive slot or if a hard disk is intended to be mounted but does not match the expected format or type.
Usage Context
This error code is relevant in contexts where file system operations are performed on storage devices. It can appear during attempts to mount, eject, or otherwise interact with drives that do not conform to the expected specifications.
Developer Interpretation
Developers should interpret this error as an indication that a drive or medium does not meet the requirements for the operation being attempted. This could be due to incorrect device insertion, mismatched media types, or other compatibility issues. Developers are advised to ensure that the correct type of storage device is inserted and that it matches the expected format before performing operations.
Related Errors
- ERROR_MEDIA_NOT_PRESENT (21): Indicates that no medium is present in the drive.
- ERROR_NO_MEDIA_IN_DRIVE (22): Similar to
ERROR_MEDIA_NOT_PRESENT, but specifically for removable media drives. - ERROR_BAD_NETPATH (67): Occurs when a network path is invalid or cannot be accessed.
FAQ
Q: What does ERROR_DRIVE_MEDIA_MISMATCH mean?
A: It indicates that the drive and medium are not compatible or exist in different libraries. This error typically occurs during file system operations on storage devices.
Q: How can I resolve this issue?
A: Ensure that the correct type of storage device is inserted and matches the expected format before performing any operations.
Summary
The ERROR_DRIVE_MEDIA_MISMATCH error code (4303, 0x10CF) indicates a compatibility issue between a drive and medium. Developers should ensure proper insertion and matching of media types to avoid this error.