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Imac 21 on MAC OS 10.8.3 very slow startup

Posted on 2013-05-10
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Last Modified: 2013-06-21
Hi There,

We are having issues with a 5 months old Imac 21 running OS 10.8.3. It was fine until I did restore a file that got weirdly lost.

The restore itself went fine and was quick.

So I did restore from a time machine backup, and then Time Machine told me to do a fresh backup, so I did. It took about 9 hours to complete.

Since then, from the moment I switch on the computer until it comes to login, it takes about 10 minutes.

Any idea why this keeps happening ?

Thanks for your help,
Adam.
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Question by:adam1h
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Expert Comment

by:strung
ID: 39156560
Boot while holding down command-R to boot from the restore partition, but instead of choosing Restore, choose Disk Utility and then Repair Disk. Let us know the results.
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Author Comment

by:adam1h
ID: 39156983
Hi Strung,
Thanks for your help... I tried but it doesn't work...
Something else?
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Expert Comment

by:strung
ID: 39157046
What do you mean by doesn't work? Won't boot into recovery mode? Repair Disk doesn't repair? Or you repaired but still have a problem. Please be more specific.
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Author Comment

by:adam1h
ID: 39159686
I repaired but still have the same problem...
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Expert Comment

by:strung
ID: 39159950
When you ran the repair did it say the disk was repaired or did it report any remaining issues?
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LVL 53

Expert Comment

by:strung
ID: 39159956
Go to the Users preference panel and create a new administrative user. Then restart and log n as the new user. Is this now faster? If so, then the problem is a user setting or startup item.
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Author Comment

by:adam1h
ID: 39161580
When I repaired it says disk was repaired...
Create a new administrative user doesn't solve my problem...
When I switch on my computer it takes about 10 minutes before I have to choose between users......
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Expert Comment

by:strung
ID: 39161611
How much room do you have left on your hard drive. If you are running out of room that could cause the problem
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Author Comment

by:adam1h
ID: 39161614
Note that I have a iMac with Fusion Drive (flash storage)... Maybe it changes something...
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Expert Comment

by:strung
ID: 39161686
If it is a fusion drive, I believe it shows up in Disk Utility as two separate drives. Did you run Repair Disk on both?

There have been reports of problems with the fusion drives, and I would be tempted to take the computer to a Mac Genius Bar as it is still under warranty.
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LVL 53

Expert Comment

by:strung
ID: 39164573
Before you do anything else, go into the Startup Disk Prefs panel and make sure your hard drive is set as the default startup disk.
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Author Comment

by:adam1h
ID: 39164966
I repaired both...
The hard drive is already set as the default one...
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Accepted Solution

by:
strung earned 500 total points
ID: 39165028
Actually on reading further about fusion drives, I think it should have shown up as only one drive in Disk Utility, not two. I wonder if somehow you have decoupled the fusion drive?

I am really out of ideas at this point, and as the computer is still under warranty, I would recommend taking it to a Genius Bar.

http://reviews.cnet.com/8301-13727_7-57584237-263/disk-utility-may-combine-custom-drive-setups-on-some-macs/
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Author Comment

by:adam1h
ID: 39167581
Always the same problem...
The computer isn't under warranty and we don't have Genius Bar here in Belgium... :-(
But thanks for your help...
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Expert Comment

by:strung
ID: 39176548
You said the computer is 5 months old. I thought all Apples had a one year warranty.
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