Even after removing old downloads and temporary files every month, my computer keeps showing low storage warnings. I suspect hidden duplicate files are occupying a large amount of disk space, but I have no idea where they are located. Is there an easy tool that can find duplicate documents, videos, music, and other files automatically? SysTools Duplicate File Finder looks promising because it performs comprehensive scans and helps free valuable storage without affecting original files or folders.
Open Timeshift in your apps and check how many backup snapshots you have saved.
Which version of Linux are you using? Most have a “disk usage” or similar app, open it and let it scan the disk & subsequently show you the big disk space hogs. I use Mint and it’s named “Disk Usage Analyzer”. Per the previous comment, are you using Timeshift for system backups, and if so is it writing the backup data to your boot drive?