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Richard
Richard, Apple Software Engineer
Category: Mac
Satisfied Customers: 36052
Experience:  IT Engineer for over 15 years
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I shut down my computer and rebooted never had a problem

Customer Question

Hi my name is ***** ***** I shut down my computer and rebooted never had a problem doing this but this time when logging in it would stop mid through booting up and shut off completely. I looked at forums and it stated to reinstall os x in which I have os x Yosemite however there is no space left on my 498 GB hard drive. I have not used not even 20 percent of that.
JA: Have you tried having password ***** directions emailed to you?
Customer: I don't have a password ***** the password ***** fine
JA: What troubleshooting have you tried?
Customer: Disk utility tried to resize the partition but it states the disc is locked
JA: The Mac expert can solve this for you. Anything else you want him to know before I connect you two?
Customer: Tries to reinstall os x but it won't let me due to not enough space on hd
Submitted: 9 months ago.
Category: Mac
Expert:  Richard replied 9 months ago.

Hi there and welcome

To clarify, what exactly happens now when you try to start the Mac?

Customer: replied 9 months ago.
My login screen comes up I put my password ***** and it begins to boot up but stops and shut down.
Expert:  Richard replied 9 months ago.

Thanks

Power off the mac, then hold SHIFT and power it on with SHIFT held down.

Keep shift held until you get to the sign in screen, then try to sign in and tell me if it then works please.

Customer: replied 9 months ago.
No it shuts off completely
Expert:  Richard replied 9 months ago.

ok, do the following please

  1. Shut down your Mac.
  2. Locate the following keys on the keyboard: Command (⌘), Option, P, and R.
  3. Turn on your Mac.
  4. Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
  5. Hold these keys until the computer restarts and you hear the startup sound for a second time.
  6. Release the keys.

Tell me if you can then sign in

Customer: replied 9 months ago.
I tried this but the os utilities screen comes up should I try again
Expert:  Richard replied 9 months ago.

yes please, you need to use all 4 buttons, it looks like you may have missed P

Customer: replied 9 months ago.
Ok this did not work. It shut off again after logging in. The line went midway but shut off
Expert:  Richard replied 9 months ago.

Power off the mac

Then start the Mac and hold down the Command and R keys at startup.

Hold these keys until the Apple logo appears. After your computer finishes starting up, you should see a desktop with an OS X menu bar and an OS X Utilities window

choose Disk Utility from the Utilities window, or from the Installer menu if you're started from an installation disc.

Click the First Aid tab.

Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.

Select your Startup Disk (usually named "Macintosh HD").

Click Repair. Disk Utility checks and repairs the disk.

Let this complete and when it has, tell me if you still have the problem please.

Customer: replied 9 months ago.
It says that everything appears to be ok. However it stats the capacity is 499.25 GB and no available and used is 499.25 GB
Customer: replied 9 months ago.
I have not used that much space on my computer
Expert:  Richard replied 9 months ago.

ok, looks like then the hard disk may be failing or corrupted but it is not reporting it

Do you have data on the hard drive you critically need to keep?

Customer: replied 9 months ago.
Not necessarily I did a back up a month ago
Expert:  Richard replied 9 months ago.

ok, in OSX utilities, choose the option to erase disk, then try to install the OSX

Let me know the results please

Customer: replied 9 months ago.
It's in the process of downloading right now. But can you tell me how my hard drive could have corrupted if I hadn't been on any harmful sights.
Expert:  Richard replied 9 months ago.

It can always happen, corrupted data, a bug in software installed, it does not need to be harmful sites

Customer: replied 9 months ago.
It's still downloading another 15 mins
Expert:  Richard replied 9 months ago.

thanks

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