Basestation local storage USB stop working

[LC7]

My Basestation (VMB 4000) local storage has been working fine until about 1 week ago. Just found out an alert that the USB requires formatting and local storage was automatically turned off.  I checked the record file in there, which were up to 8/21/2023. All cameras recorded well and files were all fine.  The USB memory has about 40% unused.  Questions are

1) Why the alert of requiring format came up?

2) How to resolve the issue?

3) Where can I find the button to release the USB from Basestation?  It was there in the setting for local recording before, but now I can't find it to safely release the USB.

[jguerdat · Accepted solution]

1 and 2) The file system may have been corrupted for some reason (maybe a power outage or base reboot in the middle of recording?). A file system check on a computer may resolve this, otherwise, copy any desired files off the drive and reformat it. If that fails, you may have a faulty drive.

3) There's no release button. There is a selection in the base settings for local recording to safely eject the drive which unmounts the drive so the file system isn't damaged by simply yanking the drive out.

[LC7]

After formatting the USB, issue resolved😊.  The selection to safely eject USB function / button only shows up with good UBS.