(
if
(
0<
(
it /
(
1024*1024*1024*1024
)
)
)
then
(
it /
(
1024*1024*1024*1024
)
)
as string & " TB" else if
(
0<
(
it /
(
1024*1024*1024
)
)
)
then
(
it /
(
1024*1024*1024
)
)
as string & " GB" else if
(
0<
(
it /
(
1024*1024
)
)
)
then
(
it /
(
1024*1024
)
)
as string & " MB" else if
(
0<
(
it /
(
1024
)
)
)
then
(
it /
(
1024
)
)
as string & " KB" else
(
it as string & " B"
)
)
of
(
(
total space of drive of system folder
)
-
(
free space of drive of system folder
)
)
(if (0<(it / (1024*1024*1024*1024))) then (it / (1024*1024*1024*1024)) as string & " TB" else if (0<(it / (1024*1024*1024))) then (it / (1024*1024*1024)) as string & " GB" else if (0<(it / (1024*1024))) then (it / (1024*1024)) as string & " MB" else if (0<(it / (1024))) then (it / (1024)) as string & " KB" else (it as string & " B")) of ((total space of drive of system folder) - (free space of drive of system folder))
