Disk errors refer to problems that occur on a computer's storage device, such as a hard drive or solid-state drive. These errors can prevent the system from reading or writing data correctly, leading to potential data loss or corruption. Common causes include physical damage, software issues, or power failures. When a disk error occurs, users may experience slow performance, unexpected crashes, or difficulty accessing files. It's important to regularly back up data and run diagnostic tools to identify and fix these errors. Addressing disk errors promptly can help maintain the health of the storage device and protect valuable information.