TCC > Variables & Functions > Functions:
Comments (...)
@READY[d:]: Returns 1 if the specified drive is ready; otherwise returns 0. The drive letter must be followed by a colon.
@READY does not support UNC names.
Examples:
echo %@ready[E:]
echo %@ready[%_boot:]
Help URL: http://jpsoft.com/help/index.htm?f_ready.htm