How to map out bad sectors on a flash drive

Asked By 40 points N/A Posted on -
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I found out that a few of my 64GB micro SD cards were actually 8GB each. Instead of throwing it out, I plan to use the good portion of those cards. Is there a utility I can use to map out or create a dummy file on bad sectors of a flash drive?

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Answered By 70 points N/A #140606

How to map out bad sectors on a flash drive

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Hello,

Windows’s built-in drive checkup utility will help you in this purpose.

1. Start an elevated Command Prompt.

2. Connect your SD card to your PC.

3. Run the following command:

chkdsk /r x:

Where ‘X’ indicates the drive letter assigned for your SD card.

Wait for the process until it finishes. This will check all bad sectors and attempt to repair if any problem is found.

After the task is done, the SD card is ready to use. Note that only the good part of the card will be in use by default. You don’t have to worry about storing data in the healthy memory of the card, it will be done automatically.

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