pouyan1
Level 1 (0 points)

Q: dont recoognized Macintosh HD

I wanted to downgrade my iMac form El caption to mountain lion (because I need os x 10.8 for my interface)

At during of restoring hang up and after that when I turn on it was too slow starting up and when loading for startup finished after that turn off!!!!

I restart IMac  and hold “option “ key and choose recovery hd ,when I  open disk Utility  just loading but don’t recognized  the Macintosh hd and just loading

 

And when I want to restore, after detecting time Machin external hard drive, can’t recognized Macintosh hard drive

And is happen when I want to reinstall for new os x also don’t recognized Macintosh Hd

 

I don’t  know what should I do?

Thanks you for your kindness

 

Imac 21,5 2013  os x 10.11

iMac, OS X El Capitan (10.11.3)

Posted on Feb 12, 2016 9:28 AM

by Pmintz25,Solvedanswer
Pmintz25 Pmintz25
Level 4 (1,634 points)
A:

Try to verify the drive with fsck. If it says it can't be repaired, you may need to seek the help of the Apple Retail Store.

 

Keep running step 2 until it says the volume is OK. Look in "Use fsck if necessary

 

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

Posted on Feb 12, 2016 11:58 AM

Close
pouyan1

Q: dont recoognized Macintosh HD

  • All replies
  • Helpful answers

  • by Pmintz25,

    Pmintz25 Pmintz25 Feb 12, 2016 9:35 AM in response to pouyan1
    Level 4 (1,634 points)
    Feb 12, 2016 9:35 AM in response to pouyan1

    Hey pouyan1,

     

    If you did not completely reformat the Macintosh HD before restoring you backup, you will run into this problem.

    Does Disk Utility show the Macintosh HD at all?

     

    Assuming you have a back up, use the Recovery Drive to completely erase the Macintosh HD via Disk Utility.

    Open Disk Utility, select Macintosh HD, set the format to Mac OS Extended (journaled), then click Erase. If it doesn't work, or says the hard drive is failing, try again using a secure erase.

     

    Once the hard drive is completely reformatted, try restoring again.

     

    Best of luck

  • by pouyan1,

    pouyan1 pouyan1 Feb 12, 2016 11:06 AM in response to Pmintz25
    Level 1 (0 points)
    Feb 12, 2016 11:06 AM in response to Pmintz25

    Thanks for The answer

     

    As I wrote,(in recovery HD ) when I click on disc utility, just icon of loading rout without show any internal or external hard drive to erase or format 

    That’s why I can’t see any hard drive to format or erase

    Is it possible in other way too see or  format Macintosh HD or not ?

    Or I have to change Macintosh Hard Dirve? 

     

    PS:I have back up in my time machine external hard drive

     

    peace

  • by Pmintz25,Solvedanswer

    Pmintz25 Pmintz25 Feb 12, 2016 11:58 AM in response to pouyan1
    Level 4 (1,634 points)
    Feb 12, 2016 11:58 AM in response to pouyan1

    Try to verify the drive with fsck. If it says it can't be repaired, you may need to seek the help of the Apple Retail Store.

     

    Keep running step 2 until it says the volume is OK. Look in "Use fsck if necessary

     

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

  • by pouyan1,

    pouyan1 pouyan1 Feb 12, 2016 4:42 PM in response to Pmintz25
    Level 1 (0 points)
    Feb 12, 2016 4:42 PM in response to Pmintz25

    i use the command /sbin/fsck - fy

    after while checking the last thing that appear  is ""******* the volume was modified*****

    i repeat the command again and show that message again

    i don`t know how should i reset from factory or restore or fix the iMac

    should i write another command ?

     

    tanks for following

  • by Pmintz25,Helpful

    Pmintz25 Pmintz25 Feb 24, 2016 2:46 PM in response to pouyan1
    Level 4 (1,634 points)
    Feb 24, 2016 2:46 PM in response to pouyan1

    Keep typing the command until it says "The volume appears to be ok"

    If you do it 4-5 times and it still says it was modified, type "reboot" and then press enter.

     

    Try to go into the Recovery drive again. It is possible that you have "fixed" the hard drive enough to where you can successfully use Disk Utility to format the drive.