Can someone tell me what these folders (.Trash and .Trash-1000) mean? They just appeared in my mountpoint and I'm wondering how?
According to the article, Ubuntu will create such folders when a file is deleted from a USB drive. Presumably this would allow a file to be restored if you accidentally deleted it.
In any case, the article offers the following recommendations to prevent a Trash folder from being created:
Don't use the delete button only (Otherwise the .Trash-1000 folder will be created)
Press the key combination shift+delete together to delete then Ubuntu won't create a .Trash-1000 folder. (Note: If you delete files and folders this way they are gone forever!)
folders (.Trash and .Trash-1000).
These appear on whatever drives are accessed by any operating system based on Ubuntu. Ubuntu-based systems could be Mint, BlackLab, Zorin, Vinux, Peppermint, etc. The drives access by these operating systems could be any partition format: EXTx, NTFS, etc.
These .Trash folders could be small or large, depending on the deleted files created by the Ubuntu-based system. Deleting these files can be another problem, especially in the Windows operating system, of any version, including the latest "insider" versions.