Hide folder when drive is pulled from computer

I don't think there is a way to ensure that it is "hidden" outside of windows 10, since the data is still "physically" there. It is windows that is hiding the folder rather than the data actually being hidden.

Have you considered using drive encryption software so that if someone does pull the C drive out the data on it is completely useless to them?

Why would someone want to remove the drive in the first place?

Nothing sinsister at all. Just getting on a bit, and say I kicked the bucket, and my PC ended up at the tip. I have a folder on there with lots of personal info on etc. So, whilst they wouldnt access it from windows, someone may take out the disk and see whats on it. Hence my question. As for encrypting the whole disk. Was hopeing to avoid that.

The details that you seek to hide are those that your Executors will need to wrap up your affairs.

Hiding something in plain sight is probably your best bet

" say I kicked the bucket, and my PC ended up at the tip.I have a folder on there with lots of personal info on etc."

If you had kicked the bucket you wouldn't really be worried about anyone seeing your personal details, would you?

If you are really worried about this, why don't you transfer said folder to a USB stick and keep that in a safe place?

You cannot HIDE any data on a hard disk. You can only overwrite it with something else and even then, unless it is done many times over, data can still be recovered (expensively)

As you say - a pointless exercise! Put your 'secret' folder onto an encrypted USB drive with VeraCrypt or some other encrypting software, and keep it in your underpants!