I don't know about the problem, but we can do a test to see how many files are available under the folder.
So how to test such a problem, it is clear that we have to build a document is not realistic, not so much time, and this method is too stupid. Here we use the Batch command, create a new bat file, and then copy the code "FOR/L%%a in (1,1,10000000000000000) do echo text>%%a.txt" to save and exit. This code means to create 10000 trillion files from 1.txt below the folder.
After double-clicking on the batch file in the FAT32 file format, patiently waiting for a while, we found that the "Unable to create a directory or file" prompt occurred when the No. 65535 file was established, indicating that up to 65,535 files can be placed under the next folder in the FAT32 file format.
So how many files can a folder hold in a hard disk in an NTFS file format, we can also use the above batch to test, but let us tell you the answer, in the NTFS file format next file can store 4,294,967,295 files, You need at least 16.7TB of free disk to complete this test, so you don't have to worry about how many files can be placed under a folder, under the Windows mechanism, these values are completely enough for you to use.