▸When you attempt to read the drive, no data appears along with an error prompt “Read / Write error on SD card”, which means you cannot read data from this device. The file or directory is corrupted and unreadable.” When accessing them in Windows File Explorer. ▸Receive an error message saying “SD card is not accessible. When they get damaged or corrupted, you will be irritated by one of the following issues: What if pen drive or SD card is corrupted?Īlthough pen drives and SD cards have developed as popular data storage media, they are prone to damage.