

So a file of 1 byte (0.001 KB, extreme lower limit) will take up about a million times as much space on disk (extreme upper limit).

a file of nominal size 1025 KB will take up 2048 KB, disk size). 1024 KB mens all files will take up at least this much space on disk each (and e.g. I believe a cluster size / allocation unit of e.g.
Ntfs default allocation size for mac windows#
I Windows Explorer, right-clicking a file or folder and choosing Properties will show the nominal size as well as the disk size. As you can tell I’m not an expert but it worked for me. Not as much as the default Sandisk cluster size. You’ll get better performance with a larger cluster size which would be better for media files like large video files at the cost of losing some file space. One thing I forgot to mention was that I chose 512 byte cluster size because of the small size of the most of the files I am storing on the drive. How are you copying the files? Are the files compressed on the HDD? The file size should not be different even to the extent of 3 time larger.

One thing I forgot to mention was that I chose 512 byte cluster size because of the small size of the most of the files I am storing on the drive FileZilla UC Browser Rufus. I have copied these same files to other flash drives, that were also formated to exFAT, and did wrote: One folder with 591 subfolders and 247,252 files that has a total file size of 9.12 GB is occupying 243 GB (yes, about 25 times bigger) on the SSD. I just deleted all of the files that I copied originally and re-copied just one folder with about 8100 files and the stored size was 10 times the file size reported.įiles to it from my local HDD. I wonder if that could be causing problems? Double checked again and files on HDD are not compressed. The HDD is formatted to NTFS and the SSD and microSD are both exFAT. There are 1000’s of files in the 10KB-40KB range. The difference between sizes on the HDD is very small, only about. The files were not compressed on the HDD. Both the microSD and the UltraFit media had similar difference between the file size and the size on disk. I have also copied these files to a Sandisk UltraFit 64GB flash drive.
Ntfs default allocation size for mac portable#
Same way with the new Portable SSD and the other media was a Sandisk 128GB micro SD card that was partitioned into 2 - 64GB partitions. I’m not doing anything special just using Windows Explorer to copy the files.
