Then, my USB drive was not well formatted, and I located quite a few solutions to share with you.
the initial system:
Insert the TF card and U disk in to the card reader. Soon after receiving the USB in the laptop, the computer prompts to format and click Cancel. Then click 'Start Menu'-'Run' around the computer-chkdskH: / F (H: is your SD card drive letter, / F will be the repair parameter.)

Immediately after SD Card deleted Video recovery is completed, the DOS window will automatically close. Reinsert the U disk. Then format SD CARD :
Insert the SD card into the pc working with a card reader. Click the ideal mouse button around the 'My Computer' icon, select 'Management', the 'Computer Management' window appears. Click 'Disk Management' under 'Storage' around the left side in the window, plus the details of all storage devices within the existing technique will appear around the screen. Amongst them, 'Disk 4 (removable)' would be the SD card and U disk to become repaired.

Point the cursor to 'Disk 4', click the best mouse button, select 'New Partition', and after that pick 'FAT32', the technique will prompt that the partition was made effectively.
Format the SD card.
By way of the above methods, the SD card might be repaired.
The third process: use memory card repair tool
For instance, the renowned http://www.upantool.com/hfxf/sd/3137.html, http://www.upantool.com/hfxf/sd/AutoFormat.html, http://www.upantool.com/hfxf /sd/2831.html, etc. Moreover, it truly is also attainable to repair your memory card working with a U disk formatting tool, like http://www.upantool.com/hfxf/xiufu/2016/8857.html, http: // www. Upantool.com/hfxf/sd/6841.html, etc., absolutely everyone can try 1 by one particular, anyway, in case you do n’t repair it, you wo n’t be saved. Let ’s take a look at your luck. It ’s not because the hardware is broken.
I fixed it making use of Panasonic sd card repair tool. Click on the Panasonic sd card repair tool above to download and set up it.

Note: Inside the red box, pick the drive letter of the device you would like to format, tens of millions, tens of millions, and never make a error, otherwise the consequences will likely be serious.
Then immediately after formatting is total, just plug in and out as prompted.
Tip: The purpose for the SD card or U disk is this. The main control chip of the SD card or U disk just isn't good. Have money to buy something excellent to store. Comparative information is priceless.