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My 8GB microSD card is showing as 1.3TB in Windows 7 and I am unable to format it. If anyone can help, it would be appreciated.
Note: it's been formatted with exFat.

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maybe its a production glitch and you've got the worlds first 1.3TB micro SD card!! – Kurru Dec 11 '10 at 19:44
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2 Answers

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First off, SD cards bigger than 4gb are not normal SD cards - they are the "new" standard called SDHC, which means its possible your card reader doesn't support it. Check it out first, or as ultrasawblade suggested, try putting it in a phone and connecting that via USB.

Otherwise in Windows 7 you could try using Disk Management tool to delete/re-create the partition and re-format:

  1. Right-click on the Computer icon on your desktop and select Manage (or alternately via the Start Menu > Computer > right-click):
    alt text

  2. Now, click below on Disk Management: alt text

  3. Find your drive, right-click and select Delete Volume.

  4. Right-click again on your drive and select Create Volume

  5. Right-click yet again on your drive and select Format

  6. Enjoy your newly formatted drive?

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hi glenneroo tried that but no option to delete volume – vinnie Dec 12 '10 at 9:54
Did you check if your card reader supports SDHC cards? Another thing to check would be if the card is write-protected: there's a small switch on the side which you can move up or down to enable/disable write-protection. Unplug it from your reader, turn the switch off, plug it back in and open up disk management tool again. – glenneroo Dec 12 '10 at 13:25
its a micro sd card and no write protction on it – vinnie Dec 16 '10 at 11:11
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Might be an issue with the controller reading the card. Try:

  • checking Windows Update to see if there are updated drivers for your SD reader drivers
  • using a different device to read the card (try your phone if it has an SD card slot)
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