How to fix hdd jvc camera video management file broken

SOURCE: video management problem

sounds like you need to "recover" the hard drive.

Only other option you can try is to reset the camera.

SOURCE: Broken video management file/ recording failure

Although the instructions don’t make it clear, it seems to be important that the camera is turned off before you connect or disconnect the USB cable. The instructions do mention that you should not delete or rename files on the camera except in the EXT_MOV folder. The camera’s firmware is apparently quite fragile about file names and the presence of the extra hidden folders that both the Windows and Macintosh operating systems create when you delete something.

SOURCE: JVC Envirio GZ-MG21U Error Msg.

I had the same issue, but I went ahead and executed the recovery and my videos were still there. I thought I had lost one but it was actually saved/loaded to another image file in the camera which is the same one that the Demo playback file is stored in. I located it by connecting the camera to the PC going under my computer and just opening every file. After I got everything off the camera I went into the menu and executed the data clean up program. I am now scanning internet sites to see if there is a fix listed anywhere to keep it from happening again. Hope this helps.

SOURCE: JVC G-z-mg365bu video management file is broken

For broken files, everio will prompt you to recover once switched on. If you mean deleted by accident, you can use file recovery software like Final Data Enterprise and a lot more. Mostly can be recovered, sometimes 80% or 90% of your total recording. Good Luck

SOURCE: warning-- video management file is broken---

okay, try to format your hard drive, if unable to you will need to replace with identical zif HD, see youtube demo how to replace the hard drive, very easy but must be very careful, format after replacing.