I have a MacBookPro ("late 2011"/ MD313LL/A) (i5, 4GB, 500 GB Toshiba HDD) with MacOSX 10.9.x on it. The MacBook won't boot. In verbose mode I see the following information:
During boot, after mounting the drive
fsck_hfs is being started, and it states "Incorrect number of thread records (4,23121)". Then the machine enters a repair, checking, failing loop that doesn't end successfully. It aborts after 3 or 4 attempts and machine is shut down.
(I have also started recovery mode and ran the Disk Check Utility from there but same result, Volume could not be repaired.
I booted a Linux live system and checked the HDD with a tool that read S.M.A.R.T. data. According to this, there is no issue with the drive at all.
What does Incorrect number of thread records (4,23121) mean?
Any ideas what to do will be appreciated.