How to reduce the size of a folder that weighs more than a terabyte?

Question

Data recovery

Hello, I encountered such a problem that after transferring files from the sd card, the folder began to weigh more than 67 terabytes, I don’t know what to do, I hope for your help, I already realized that the sd card had different formats, apparently it was FAT32, but I don’t know how to fix everything without data loss

Answer 1

Check the C drive so as not to bother with the console, check the properties of the disk - service - check (for C, it will offer a reboot)
It is technically possible to create sparse files (leaky files), when a position shift in a file without recording does not physically take up space, but as far as I know regular tools for copying files like the explorer and most utilities do not know how to save holes.
Efficient ntfs compression is also possible, but such a file with a size of terabytes would be copied for a very long time, I would have noticed.
Find a large file manually, it is difficult to do this in the explorer (if there are many subdirectories) it is better to use far commander or a specialized utility like windirstat

Answer 2

Do a full disk check and that's it.