Invisible Macintosh HD

I recently had a problem with my poppy, my hard drive disappeared: Macintosh HD, both from the desktop and from the fainder. For a long time I was struggling with this problem, and rearranged the ticks, and what I just did not do, google wool and everything was senseless. Typical solutions did not help, or errors crashed, but I was lucky, however, and I got my way.

Solution to the problem:
1) Download Xcode (DeveloperTool), install
2) open the terminal, write
3) cd / Developer / Tools / click enter
4) further: ./GetFileInfo / we press Enter
5) if we see the line attributes: aVbstClinmedz, then enter
6) sudo ./SetFile -av / click Enter, type the admin password, again Enter
reboot, voila and in the file and on the desktop you can see Macintosh HD

Thanks for attention:)