Which disk is problematic -- the "source" disk (your 'C:' drive) or the "target" disk (your Transcend) ?
The external storage device has several major components:
* USB cable
* external power-supply
* disk-drive inside the enclosure
* USB-to-disk-drive adapter inside the enclosure.
Try a different USB cable.
Try a different USB port on your computer.
Try a USB port on a different computer.
Take a multi-meter, and measure the output voltage/amperage of the power-supply,
and compare with the specifications on the label of the power-supply.
Open the enclosure, and remove the disk-drive, and attach it as a "slave" drive in a desktop computer, to see if bypassing the USB-to-disk-drive adapter bypasses the problem.
Look at the label on the disk-drive, for manufacturer, product-number, serial-number, and manufacture date. Access the manufacturer's web-site, and use "check warranty status" to see if the warranty still is valid. If so, the drive can be replaced, at minimal cost to you.
Buy a new, compatible, disk-drive, and install it in the enclosure, to "revive" your external storage device.
Search online for a professional "data recovery service". For a significant fee, they can repair your disk-drive, just long-enough to copy your files to a new disk-drive.
CRC or Cyclic Redundancy Check is a process that helps in identifying any errors that might occur during the data transmission process. Data is usually transmitted in small blocks, and a CRC value is assigned to each block and transmitted along with it. This CRC value is verified at the destination to ensure that it matches the CRC value transmitted from the source. A CRC error occurs when the two values (source and destination) do not match and the test fails. The main benefit of CRC is that it helps you ensure that data you have received or downloaded is not damaged or corrupt.
Causes of CRC Errors
CRC errors can occur due to many different types of problems. Some of these problems are:
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