Can you read from and write to the disk if the write-protect notch on a disk is open?

Yes, if the write-protect notch on a disk is open, it typically means that the disk is in a write-protect mode, preventing any writing or modification of data. However, you can still read from the disk, as reading does not alter the data stored on it. If you want to write to the disk, you would need to close the write-protect notch.