![mac windows different size for different windows mac windows different size for different windows](https://photos5.appleinsider.com/gallery/43785-85189-000-lead-Window-management-xl.jpg)
So what they do is use “allocation units”, also known as the “cluster size”. If it were to keep a list of every single byte, the table (like an address book) would grow at the same speed as the data – and waste a lot of space. Why does this happen? Well, the FAT32 file system needs to keep track of where each file is stored. If each file averaged 2 KB, you’d get about 100 MB total – but you’re also wasting 15x that (30 KB per file) on average due to the allocation unit size. The space each file takes on the disk is always a multiple of the allocation unit size – and here we’re assuming each file is actually small enough to fit within a single unit, with some (wasted) space left over. Ok, now the minimum space taken is 50,000 * 32,000 = 1.6 GB (using SI prefixes, not binary, to simplify the maths). 32 KB cluster size (allocation units), which is the max for FAT32.If you have a lot of small files, this is certainly possible. Other file systems might be different, but they aren’t supported on Windows anyway. NTFS and exFAT behave similarly with regards to allocation units.
![mac windows different size for different windows mac windows different size for different windows](https://tidbits.com/uploads/2020/03/Mac-window-resizing-10.jpg)
I will be assuming that you are using the FAT/FAT32 file system here, since you mention this is an SD card. SuperUser contributor Bob has the answer for us: Looking at the screenshot, there is definitely a huge discrepancy between ‘Size’ and ‘Size on disk’, so what has happened here to cause this? The Answer Inside this, my maps app stores its cached maps, and the app gets its maps from Google Maps.
#Mac windows different size for different windows android#
I know that ‘Size on disk’ should be a little more than ‘Size’ because of allocation units in Windows, but why is there that much difference? Could it be because of the large number of files?īTW, this folder is on my Android phone’s SD card. SuperUser reader thelastblack wants to know why there is such a huge difference between ‘Size’ and ‘Size on disk’ for a folder on his phone’s SD card:Īs you can see below, there is so much difference between the ‘Size’ and ‘Size on disk’ fields for this folder.