Windows 10: Strange "SYSTEM" drive has been appears on "My Computer". What's it's?

After last night i have re-turn on my computer about five minutes ago............ i see on "My Computer" i have a new "strange" system drive named F: (C and D it's my HD... E it's dvd burner) whit label "SYSTEM" and i have tryed to access and result inaccessible.
The size it's about 100MB and 47,2 it's be filled but i can see what's inside and i don't have idea what's is that............. i thinks it's possible there's sometighs like a "hidden" partition but i don't even idea because now it's appears on "My Computer".
Yesterday and last night (before i go to sleep and turn off this same pc) there's no listed here................


If it's necessary i can post some pics.... or info about it... apparently there's a FAT32 partition.........

*EDIT*
I can add this info about this:
i have opened the diskmgmt.msc and here i can't see nothings about this newest drive F:.... look at here:




And here the the disk manager.. no F: appears:





:)

 

5800 XM " General: System Error " on saving music file

WHAT CAN I DO NOW

 

my phone says " System Error " while i delete d broken images frm my phone memory...

Connect the Phone to PC and thru' Windows Explorer search for this file. If you find it Delete from there .. See if it works .

 

See:

what is F System directory that suddenly appears in Windows 10

 

Great link........... i try to use search but i have found so many thread but not this linked here.

Otherwise this afternoon i see on "Windows Update"........ i need to make a restart on my windows i have do this... when reboot it's complete i see on "My computer" and this partition it's disappears mysteriously also how it's appears *Smile

Thanks otherwise.......... i can ticked this thread as resolved.