Determining Cluster Size | CodeGuru
www.codeguru.com › windows › determining-cluster-sizeSep 12, 1998 · As mentioned earlier, it would seem that getting the cluster size under Windows95/98 is an easy task. The Win32 API provides the ::GetDiskFreeSpace() function, which returns the cluster size of the drive you pass to it, along with other information about it. However, things aren’t that simple when you start dealing with newer hardware.
Default cluster size for NTFS, FAT, and exFAT
support.microsoft.com › en-us › topicBy default, the maximum cluster size for NTFS under Windows NT 4.0 and later versions of Windows is 4 kilobytes (KB). This is because NTFS file compression is not possible on drives that have a larger cluster size. The format command won't use clusters larger than 4 KB unless the user specifically overrides the default settings. You can do this by using the /A: switch together with the Format command or by specifying a larger cluster size in the Format dialog box in Windows Explorer.
How to choose the right cluster size
macrorit.com › choose-cluster-sizeAug 10, 2018 · Press Ctrl+A to select all the files, folders. Right-click on the selected area and choose Properties. Compare the value of Size and Size on disk. And Microsoft says: the difference between SIZE and SIZE ON DISK may represent some wasted space because the cluster size is larger than necessary.