| Debugging Tools for Windows |
The UNMOUNTABLE_BOOT_VOLUME bug check has a value of 0x000000ED. This indicates that the I/O subsystem attempted to mount the boot volume and it failed.
The following parameters are displayed on the blue screen.
| Parameter | Description |
|---|---|
| 1 | The device object of the boot volume |
| 2 | The status code from the file system that describes why it failed to mount the volume |
| 3 | Reserved |
| 4 | Reserved |