|R1||Pointer to name of image (null terminated)|
|R2||Byte offset of defect start|
|All registers preserved|
The purpose of this call is to map out a defect from an image.
To return a list of defects from an image, use OS_FSControl 41.
OS_FSControl 57 provides exactly the same functionality as this call, but supports 64 bits values, and thus can support larger discs.