Question about Garmin eTrex Venture Cx GPS Receiver

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How to reformat a corrupted microsd (with no sd card reader)

While uploading my first set of maps, I realized that at that speed, my bateries would die before the end of the process. So I interrupted the transfer in a clean way it seemed.

However, from that point, the HCX won't boot with that card in.
I press On. Stays on boot screen as long as i push. But as soon as I release the button, it goes off in a dirty way, with visual effects that looks like those described by others : persistence + one strange horizontal line sometimes and somewhere randomly.

Then How can I reformat it ? (I have no microsd card reader !)
To format, it seems you need to go in the menus ....

Isn't there a sequence of key pressures to do that on bootup ?

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  • Anonymous Aug 09, 2008

    my micro SD is not working?



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  • Garmin Master
  • 638 Answers

Take the card to almost any computer store and ask them to format it FAT32.

While your unit is connected to your PC via USB cable, it is NOT using the batteries, it is using the power from your PC. Just tell it to transfer the maps and then leave it alone until it is finished. A lot of maps will take a long time to knit together, and then transfer.

Hope this helps.

Posted on Apr 10, 2008


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Posted on Jan 02, 2017


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How to remove write-protection on a micro sd card

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    Use a memory card reader to connect the microSD card to a computer for formatting. In case you're using an SD card adapter, ensure that the write protection key is in the unlock position.
  2. Locate the card Right-click My Computer, and click Manage. Go to the Disk Management tab on the left pane, and locate your microSD card from the list of available disks.
  3. Format the microSD card Right-click on the microSD card's drive, and click Format. This eliminates all data, including corrupted files that cause write protection in storage devices

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Unallocated means the SD card has either
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Do you get a different result if you turn on the unit with the SD card not installed? If so, then you may be able to solve the problem by installing an SD card with a known good program and map file(s). In that case, obtain an SD card reader for your computer if you do not have one. If your computer can read the SD card, make a backup image of it, then install a file set on it.

If the cannot be read, then you will need to reformat it and restore the original map files or try to install a new map image file to it.

In you are unable to install good application and map files on the SD card, you may have to get a new SD card from Navigon.

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However, I would suggest to try different things first:

1. If you're trying to reformat the card using the SD adapter or card reader, you may want to try to use different adapter or different card reader.

2. You may try different computer as well.

If the same problem occur, then there's no other option but to buy a new one.

Thank you and good luck!

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