Is my Hardrive dead?

[DrYellowJacket]

Yesterday I updated my windows and when I checked my computer this morning a bunch of games that were installed on Steam were no longer installed. I checked file explorer and sure enough, one of my hard drives wasn't there, it was showing in device manager though. In disk management it said the disk wasn't initialized and when I tried to initialize it I got an error saying that the specified file could not be found. I then went into diskpart, the disk was shown with a size of 0 B.I then restarted my computer and checked everything again and nothing changed except now in Disk Management there isn't even the option to initialize the disk. Is my disk broken? If not, what can I do to fix this?

Update: after a bit of tinkering in Diskpart, I can now try to initialize the disk again but whenever i do a different error pops up saying "The request could not be performed because of an I/O device error."

Update 2: The disk now no longer appears when I list disks in diskpart.

 

[USAFRet]

It appears to be dead dead.

This is when you retrieve your data from the backup you made before this happened.

 

[RolandJS]

Or, having no restorable backups, a data recovery company / specialist maybe, possibly, can recover some if not many of the data files.