array Sys_GetHardDiskInfo ()
Array of information about all the hard drives
Provides information on the existing disks in the system, including the size and the already used memory.
print_r(Sys_GetHarddiskInfo());
/*
Array
(
[HDD0] => Array
(
[LETTER] => c:\
[LABEL] =>
[TOTAL] => 53684989952
[FREE] => 23275171840
)
[NUMDRIVES] => 1
)
*/