Firstly can I say how chuffed I am to gave found this community, and that's it's still active some many years after Tonium ditched the PMD. Great work guys on providing this reference library

I've not used the PMD (#0430) for a couple of years and I'm sure last time I did it wouldn't work without being powered from the main. The battery issue seems to have resolved itself but since I deleted all the tracks from the PMD via the Editor yesterday I'm struggling to copy music back on to the device.
So...
1) Is the Editor compatible with Windows 10? I've not tried it on my old Windows 7 PC but will update the post when I have. I'm using version 2.0.2.14170.
2) Sync speed - I've managed to copy 2 tracks on to the device which took about 10 minutes before the Editor returned an error (Sorry friend, an error has occurred please restart the software. Disconnecting the PMD and restarting both the PMD and the Editor allows me to reconnect but I've not been able to copy any further music over. It starts syncing then errors again.
3) File location - I created a folder on my NAS drive for the files to be imported in to the Editor. The files imported and were analysed with an issue. Are the files copied locally or is there a link to the original file? Would copying the music files on my PC and uploading them to the PMD make any difference?
4) When I plug the PMD in to my PC Windows 10 is giving an occasional error message (There is a problem with this drive, please scan it). This seems to tie in with the Editor connecting to the PMD before it errors. I get the message on the device screen saying not to unplug the device but this disappears. Is this an indication the hard drive is on the way out?
If I do need to replace the drive then I may as well replace the battery at the same time. Thanks for posting the info on how to do this. I'm also off to look for another USB cable is case this the issue.
Any advice is much appreciated