Permissions Errors with Macintosh HD

You need to run:

mount -uw /

chmod 1755 /

in Single User mode. You don't need to use sudo in it.

(119618)

Hey,

please check whether there is an filevault encryption at the hard drive, because the error message state that your hard drive is protected and you has no access to write on there.

start for this into recovery hdd again > open disk utility > choose on the left the 2.nd Macintosh hdd.

press and hold the control key(ctrl) and click on the macintosh hdd and try to unlock this with your password.

then you can be maybe reinstall or restore from backup or try to change the password of root user.

ok i see in your pictures that you have no partition. so i it is impossible to reinstall on there an system or start from they.

if you have an backup from you data i can show you an way how you can create an new partition and restore then the system from the backup, because by the way the hard drive would be erase complete.

but first a question? what for an mac do you have? macbook, mac mini, imac, mac pro? from which year?

ok i would recommend you to start the mac with the internet recovery hdd ( by starting the alt + cmd + r) after the article OS X: About OS X Recovery - Apple Support

then open there the utilities at the menu bar at the right site of edit. go into terminal, and open an new window over the option shell > new window with settings basic:

1.st terminal windows wrote down the cmd:

diskutil cs list

2. there you can see in the first line a logical volume group number. Mark this and copy this with cmd + c.

3. At the second window use the following cmd:

diskutil cs delete (paste here the logical volume group from step 3)

you must see then as last steps finish corestorage operation, after this you can check at disk utility and you must find the internal hdd(unlocked) and a partition named untitled.

if you are at this step you can choose from the os x utilities reinstall os x or restore from time machine backup.

your welcome 🙂

You are AWESOME!!! I have continually been disappointed by the phone as well as the "Genius" bar support! Yourt very simple to follow instructions saved me what I would consider a painful trip to the Apple Store! I cannot thank you enough! I am over the moon with gratitude!

This is awesome! Thanks! It totally saves me a trip to Apple store 🙂

I've run into this problem, and am following Stefan's instructions. However, when I type the "diskutil cs list" command into the Terminal window, I get the response "NoCore storage logical volume groups found". I can't get past that, and as I'm just following the instructions without having the first idea what I'm actually doing, I'm stuck now. Stefan, if you're still following this thread, could advise me, please?

Thanks!

-Kit

Hi iKittyp,

this message told me only that you have no logical volume group. Can you describe your issue a little bit more?

I had a permissions error that locked up my drive, and tried to go through internet recovery using your instructions as to what to type in the Terminal windows. I did all that and literally, it just told me I had no logical volume group—that's all. Because I've never used commands in Terminal before, I wasn't able to try anything else! As I had to get back to work but had no idea how to rescue the situation, I decided in the end to just zero the drive and boot from the clone I always keep on an external. A lengthy and somewhat radical solution, but it does seem to have worked...fingers crossed! Thank you sooo much for replying, though—people on these boards are brilliant, always willing to try and help others out.

Thanks again.

-Kit

Thank you very much... it took me 6hours of "trial and error" till i came by your reply. It solved my problems.

Thanks a lot. I had same problem like mchen518 trying to restore to my ssd hard disk when it just snapped while restoring and then the HD was locked.