Get size before updading.

Hi All,
I visited the forum before asking my question but i did not find the answer so I post it
Is it possible to know total size of each update (ex: W8.1 english) before starting the tool ?
thx in advance
John
I visited the forum before asking my question but i did not find the answer so I post it

Is it possible to know total size of each update (ex: W8.1 english) before starting the tool ?
thx in advance
John