what is the "size on disk"?

if you have lots of small files, that could happen - each file takes a whole block. Depending on the format of the Harddrive (NTFS, FAT32), the block size could be different too.

所有跟帖： 

• C Harddrive is NTFS -AnotherChinese- ♂ (116 bytes) () 07/01/2009 postreply 16:56:35

• 嗬嗬，你用的是Vista。Vista的System Restore很占硬盤。 -墨鬥魚- ♀ (0 bytes) () 07/01/2009 postreply 17:19:27

• Mine is Window XP -anotherchinese- ♂ (0 bytes) () 07/01/2009 postreply 20:00:21