Is it safe to delete the $Recycle.Bin folder?

No, don't delete the $Recycle.Bin folder itself. Empty the Recycle Bin instead. The folder is where Windows stores what you've deleted, so its size is simply the size of your Recycle Bin. Emptying it frees the same space without touching the folder Windows uses to manage deleted files. The one exception is an external or USB drive, where removing $RECYCLE.BIN is harmless: Windows recreates it.

Quick verdict:

• Safe: emptying the Recycle Bin, for every drive, once you've checked nothing in it is still needed.
• Safe: deleting $RECYCLE.BIN (or its contents) on an external drive or USB stick. It comes back when needed.
• Not needed, avoid: deleting C:\$Recycle.Bin itself, or forcing it with admin tools.
• Check first: folders belonging to other user accounts. They're someone else's deleted files.

What is $Recycle.Bin?

When you delete a file in File Explorer, Windows doesn't erase it. It moves it into a hidden system folder at the root of the same drive: C:\$Recycle.Bin for drive C, D:\$RECYCLE.BIN for drive D, and so on. The Recycle Bin icon on your desktop is just a combined view of these folders.

Inside, each user account gets its own subfolder, named after its security identifier (SID), a long code like S-1-5-21-…-1001. That's how Windows keeps your deleted files apart from other people's on the same PC. In each one, deleted items appear as pairs of files with names starting $I (the original name, location and date) and $R (the actual content).

You don't normally see the folder at all. It only shows up in File Explorer if you turn off Hide protected operating system files in the folder options, and that's also why so many people find it and wonder what it is. On a drive that has been used on Windows and then plugged into a Mac or Linux PC, $RECYCLE.BIN shows up as an ordinary folder.

It grows because deleting a file doesn't free any space until the Recycle Bin is emptied. Each drive's bin has a maximum size; once it's full, Windows removes the oldest items to make room.

How much space does it use?

The simplest check: open the Recycle Bin, switch to Details view and look at the sizes. Or open Settings → System → Storage, where Temporary files shows how much the Recycle Bin is holding.

That view only shows your deleted files. To see how big $Recycle.Bin is next to everything else on the drive, use a disk space analyzer. SquirrelDisk shows $Recycle.Bin as a slice at the root of each drive when you scan it. It runs as your normal user, so other people's SID folders it isn't allowed to read are skipped: their space shows up in the "Hidden space" slice instead. SquirrelDisk also refuses to delete C:\$Recycle.Bin: empty it with Windows instead.

How to empty it safely

Empty your Recycle Bin

1. Open the Recycle Bin from the desktop.
2. Look through it and restore anything you still need (right-click, Restore).
3. Click Empty Recycle Bin in the toolbar (or right-click the desktop icon and choose Empty Recycle Bin).

This empties your bin on every drive at once. Alternatives:

• Settings → System → Storage → Temporary files, tick Recycle Bin, then Remove files.
• From PowerShell: Clear-RecycleBin empties all your bins, Clear-RecycleBin -DriveLetter D just one drive (Microsoft's reference).

Other user accounts

Each person on the PC has to empty their own bin, so the simplest way is to sign in as them and empty it. If an account was deleted long ago and left its SID folder behind, an administrator can remove that one subfolder inside C:\$Recycle.Bin. Only do this when you're sure the account is gone: the files in it are lost for good.

External drives and USB sticks

Plug in the drive and empty the Recycle Bin as above: it includes files deleted from that drive. If you've moved the drive to another PC or a Mac and see a large $RECYCLE.BIN folder, you can delete it there. You only lose files that were already in the bin. Windows recreates the folder the next time you delete something on that drive.

What you should not do

• Don't delete C:\$Recycle.Bin with admin tools or "take ownership" tricks. It gains nothing over emptying the bin, and a damaged Recycle Bin can show errors like "The Recycle Bin on C:\ is corrupted" until Windows rebuilds it.
• Don't change its permissions. Windows relies on them to keep each user's deleted files private.
• Don't empty it in a hurry. Once the bin is emptied, Windows can't bring those files back. Check for anything you deleted by mistake first.

If you do get a "corrupted" message, accepting Windows' offer to empty the Recycle Bin for that drive usually fixes it.

How to stop it growing back

• Set a maximum size. Right-click the Recycle Bin, choose Properties, select a drive and set a Custom size in megabytes. Each drive has its own setting.
• Skip the bin on a drive. In the same window, Don't move files to the Recycle Bin. Remove files immediately when deleted is handy for an external drive you use for scratch files. Be careful: there's no undo.
• Let Storage Sense empty it. In Settings → System → Storage → Storage Sense, choose how long files can stay in the Recycle Bin before Windows removes them automatically.

If space is tight even with an empty bin, look at what else is big: Windows Temp files and Windows.old are common culprits. When you delete files with SquirrelDisk, Move to Trash sends them to the Recycle Bin too, so you can still undo a mistake. Just remember to empty it afterwards to get the space back.