A bad sector is a sector on a computer’s hard drive that has been damaged and has lost the ability to write and retrieve data. Bad sectors can sometimes corrupt your saved data as well as slow down your computer. In order to improve the performance of your computer, you can use the Check Bad Sector function to make sure that you hard disk has no errors. AOMEI Partition Assistant also provides the feature to check bad sector for your disk or partition, however this function can only find the bad sector not repair it. There are dozens of ways to fix bad sector, the most effective one is to subdivide the bad sector into an independent unallocated space or use other repair tools.
To check bad sectors of a Partition
Step 1. Choose a partition that you want to check, right click it and choose "Advanced"> "Check Partition".
Step 2. Select the way of checking errors to perform. As you can see from the following screenshot, there are three choices, simply choose the last one “Check whether there is bad sector on the partition” . And click "OK" to go to next step.
Step 3. Click "Start" button to check.
To check bad sectors of a Disk
The process of check partition and check disk are roughly the same, that is to say, check bad sectors for disk shares the same steps with check bad sectors for partition. The only difference is appeared in the first step.
When you are going to check bad sectors of a disk, the first step is to right lick on the disk which you want to check, and then choose "Surface Test". The remaining steps of this operating are all the same with check bad sectors of a partition.
Depending upon the size of your disk, the checking process may take you few minutes to work out.