Return Values

The disk status is returned in combination of following flags. FatFs refers only STA_NOINIT and STA_PROTECTED.

STA_NOINIT

Indicates that the disk drive is not initialized. This flag is set on system reset, media removal or failure of disk_initialize() function. It is cleared on disk_initialize() function succeeded. Media change that occurs asynchronously must be captured and reflect it to the status flags, or auto-mount feature will not work correctly. When media change detection feature is not supported, application program needs to de-initialize the file system object with f_mount() function after the media change.

STA_NODISK

Indicates that no medium in the drive. This is always cleared on fixed disk drive. Note that FatFs does not refer this flag.

STA_PROTECTED

Indicates that the medium is write protected. This is always cleared on the drive that does not support write protect notch. Not valid while no medium in the drive.