Forum Home
Press F1
 
Thread ID: 43208 2004-03-07 00:11:00 winxp: size & size on disk Jacob4165 (199) Press F1
Post ID Timestamp Content User
220766 2004-03-07 00:11:00 When I go into the properties of a file or folder winxp lists the "size" and "size on disk". The "size on disk" is always about 1 percent bigger than "size". I'm guessing that "size" is refered to as 1000 bytes X 1000 bytes... and "size on disk" is 1024 bytes X 1024 bytes... but I'm not sure

Does anyone know what the actual story is?
Jacob4165 (199)
220767 2004-03-07 00:17:00 i think thats what it would mean Megaman (344)
220768 2004-03-07 03:50:00 The file size reported is

(i) The actual size of the file in bytes

(ii) The size the file takes up on disk which is dependent on the disk Allocation Unit Size. The allocation unit size (also known as the cluster size) is the smallest space that can be allocated to a file.

The allocation unit size can be:

(i) the Default selection, in which Windows XP selects the appropriate cluster size based on volume (disk/partition) size,
(ii) 512 bytes.
(iii) 1024 bytes.
(iv) 2048 bytes or
(v) 4096 bytes.

Cheers, Babe.
Babe Ruth (416)
1