EBUSY is the corresponding error code returned by system call 'mount'.
The reason could be one of the given below:
1. /dev/hdc1is already mounted.
2. /dev/hdc1 cannot be remounted read-only.
3. /mnt/disk1 or /dev/hdc1 still holds files open for writing.
4. /dev/hdc1 cannot be mounted on target because /mnt/disk1 is still
busy (it is the working directory of some task, the mount point of
another device, has open files, etc.).
5. /mnt/disk1 could not be unmounted because it is busy.
Regards
T.KaruppuSwamy