Run Scandisk, and pray. Most likely the drive has suffered a catastrophic failure, or it could be something as simple as a power failure while writing to the volume.
Chat with our AI personalities
A reading error is when you accidently read something wrong :)
the precentage of error in data or an experiment
take reading 4 to 5 times, and take its average this will reduce error
Take a measurement with nothing in the gauge. That reading is the zero-error.
The scale doesn't start at zero, so you need to compromise or you get a systematic error.