Windows Server Backup fails because of a FAT32 hidden partition

I do something similar, except instead of renaming the folder afterwards, I create a new folder before doing the backup, like this:

cmd /c mkdir \\remotebackuplocation\somefolder\%DATE% //(%DATE% will obviously not work well if you have slashes in your date string, but that's easily fixed with some character replacing)
cmd /c wbadmin start backup -backupTarget:\\remotebackuplocation\somefolder\%DATE% -include:C: -vssFull -quiet

You can list all your backups with this command

wbadmin get versions

Then this command to restore

wbadmin start recovery -version:<version-identifier>

wbadmin command reference

Just wanted to let everyone know how I solved this problem.

It turns out the problem was with my backup drive. It was an external drive connected to the server with an eSata cable. The drive kept dissapearing from the storage manager during backup. I found other people complaining about eSata connections being finacky on google as well. So I switched to a USB 3.0 external hard drive, and it worked flawlessly! It backed up about 350 gigs in just over an hour.

Hope this helps someone else, Daniel