WMPRO, WMMINI FW >= 1.55 WMMEGA FW >= 2.0 WM2 FW >= 3.0

Return total space on a drive

$drive: 0=sd card, 1=internal flash (M2 only)

KiloBytes (KB) total for the microSD card (Bytes/1024, rounded to an integer)

<?
  $dt=disk_total_space(0);
  print("The card has ".$dt." KiloBytes total."); 
?>

disk_total_space() - Return free space on microSD card

freemem() - Return free memory space

freestack() - Return free stack space

nvram_free() - Return the number of bytes available in NVRAM