MacBook Pro doesnt boot after systemupdate / repairing volume doesnt work i have a problem with my MacBook Pro.
I installed a Systemupdate, reboot and then i had a loading screen which loads a long time.

Then i started the mac in verbose mode and there is...

hfs: mounted Macintosh HD on device rootdevice
AppLeUS8MultitouchDriver::checkStatus - received Status Packets Payload 2: device was reinitialized
/devirdiskOs2 (NO WRITE)
Root file system
Executing fsck.hfs (version hfs-226.1.1).
/devirdiskOs2
Root file system
Executing fsck.hfs (version hfs-226.1.1)
[...] Checks
** Checking catalog file.
Incorrect number of thread records (4, 22547)
Incorrect number of thread records (4, 22547)
[...] More Checks
Repairing volume.


The Checks and Repairs start three/3 times.

After that the MacBook turns off without any information.

I startet the HDD Recovery program, but there is the same in the error log.

I dont know whats up with the Hard Drive -.-
You can try boot your mac in recovery mode (hold command+R while booting), open Terminal, and running fsck to rebuild the btrees that hold the information of your files and directories structure.

To rebuild the catalog btree:

fsck -d -r /dev/disk0s2


Rebuild extents btree:

fsck -d -Re /dev/disk0s2


Rebuild attributes btree:

fsck -d -Ra /dev/disk0s2


Replace "disk0s2" by the id of the partition you want to fix. You can find out what's the id by running
    diskutil list

"-d" means show debugging information. This can be very useful to understand what the error is.