However, my hard drive has approximately 180,000 files, and assuming that each of these files have a 4k block at the end that is not totally full we can multiply 180,000 by 4k and come up with approximately 0.8GB of extra space, keeping in mind that I have defragmented my hard drive so there should be only one partially filled block at the end of each file. **I understand that the allocation of files on a hard drive are stored in 4k “Allocation Units”/Blocks, and that Drive Properties totals include partially filled 4k blocks for each file causing the total disk space to be inflated compared with the total actual size of all files combined. I ran disk cleanup and also selected "Clean up system files".ĭrive has been defragmented, to reduce the number of waisted partially filled 4k blocks. I deleted and recreated the pagefile.sys file. Yes, I ran the folder and file size tools as an administrator.
Here is my in-depth diagnostics into the file size mismatch: I’m hoping to refresh this topic with some new ideas for everyone including and hopefully fixing my issue. Thank you for your feedback….Actually, the referenced thread is nearly the same as mine, however, that thread seemed not to have a final conclusion and had been up for a while.
but I've used those two tools to search my drive and they are only coming up with the 104GB. I can tell you that I did an image of my entire HD and it came to 149GB so the 104GB report isn't right. I remember seeing a tech blog on the web about two years ago for Windows-7 about some kind of hidden Windows "log" files under c:\windows that would mess up drive space used, but it was for win7, not sure if this would be the same for Win 10. I just now noticed the difference in size, but would like to fix it. I built the PC myself and loaded a fresh copy of Windows 10 Pro about 5 months ago. This is not a Dell or HP, and there are no hidden partitions. I've used these tools (see below) to examine my folders and file sizes and to look for any "hidden" files and/or folders, but there are none:ĥ. Select all files, right-click, click Properties Total file size of combined files = 104GB Open drive C, unhide all system files, etc.
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