Panic report when Yosemite boots, PLEASE HELP!

Hi F,

Calm down, start up the Mac with Command+R depressed until the chime sounds, then holding down Option.

OS X: About OS X Recovery - Apple Support

Hi

Try to take a video (with your iPod, iPhone or ...) from screen when the message showing on widows. Then slow down the video and put the message here 🙂 !

Similar panic message was posted here, you might try what they did:

http://apple.stackexchange.com/questions/111806/problems-with-os-x-update-and-en able-journaling

As @pmiles mentioned before with the link and also as message said the problem is maybe with file system ("vfs_journal.c" or "current thread: mount_hfs") and when you have file system errors you should use Single-User Mode. So follow the instructions as mentioned in the link.

Regards

Manili

Ok Fearny,

Have you tried booting into Single User Mode? Thereafter try and use the command line utility as described

single-user mode

Resolve startup issues and perform disk maintenance with Disk Utility and fsck - Apple Support

Would you please write here what you do since the issue, specially which command did you use ?

The startup drive is failing, or there is some other hardware fault.

Fearny

Try what @pmiles mentioned in the link :

Boot in Single-User Mode

Type :

diskutil list

Under "TYPE NAME" look for something like "Apple_HFS Macintosh HD" which usually has the biggest "SIZE" (except first line, which is the hole hard drive).

Now look at "IDENTIFIER" column and check for "IDENTIFIER" of "Apple_HFS ...". usually it is disk0s2. Now try following commands :

/sbin/fsck_hfs -f -d /dev/disk0s2 (or something like disk0s2)

reboot

Hi Fearny

Don't worry, Just try second commands :

/sbin/fsck_hfs -f -d /dev/disk0s2

reboot