Is it enough to remove the hard drive?

I want to sell my old laptop, it is enough to remove the hard drive so that there's no more data from me or do I have to consider something else?

Yes, that should be enough if it is the only hard drive in the laptop.

You could also clean the hard drive with a suitable program, adapter and another computer.

In my opinion, it is enough. However, I would never buy such laptops, because then I can buy a hard drive first, and if things go awry, the laptop also needs an adapter, which the previous owner probably removed with purely intent!

It is enough if you remove all data carriers (SSDs, hard drives). The operating system and data are on there. You do not have to expand the working memory, since it loses the data again as soon as the tractor is shut down!

However, I recommend restoring the factory settings in the BIOS in order to delete any existing passwords.

Basically, it is enough, but - what should the buyer do without a hard drive? Get software from the internet for safe formatting and use it to clean the plate. You want to sell them too, I guess.

This is a very old HDD, I don't think that anyone wants it better, the buyer installs a new SSD

Which passwords are stored in the bios?

Of course it is better. But if you think so, you will not buy your old computer.

Just remove the hard drive.