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How to improve performance using PCI drive

How do I put 12GB PCI drive back to work for speeding running programs?

After my 3TB SATA hard drive had problem and OS X was installed on 120GB PCI drive, when PCI drive was erased and OS X was installed back to 3TB hard drive, the computer runs much slower now. Utility shows 120GB PCI drive with OS X installed.

PCI drive never showed up before when the computer was purchased and ran very well. Is it a flash drive to speed up program running speed?]

SOMEONE PLEASE HELP!!!

iMac, OS X Yosemite (10.10.4)

Posted on Feb 8, 2016 8:37 AM

23 replies

Feb 9, 2016 5:59 PM in response to Linc Davis

Dear Mr. Davis,

last time it took internal recovery 16 hours to get my 3TB hard drive back. Maybe it will take as long to get Fusion Drive back?

Before I got to internal recovery disk utility to Fix, I was able to boot to 3TB hard drive OS X El Capitan and do FCP video editing, browse online, copy your instructions and paste to Pages no problem but slower than before fusion drive split to two drives. It was working.

Linc Davis

Level 10

209,547 points

Feb 9, 2016 6:28 PM in response to sharonfromredondo beach

It doesn't take 16 hours to create a Core Storage logical volume group. It takes about a minute, maybe less. I'm sorry that things are not working out, but there's nothing else I can tell you. The machine needs to be serviced. Anything else you do will be a waste of time, at best.

Feb 9, 2016 6:43 PM in response to Linc Davis

Maybe that was because I selected the wrong drive?

There were 3TB SATA and 120GB PCI drives. I selected 3TB.

If I do it again, which drive should I select?

Feb 9, 2016 7:25 PM in response to sharonfromredondo beach

HI, Mr. Davis,

I just forced to shutdown and restarted to internal recovery, I saw internal drive now is one 3.12 TB and no more red letter two drives. It seems that Fusion drive is back. Name:Internal Drive Type: Logical Volume Group Disk Status:Online Capacity: 3.12 TB Available: 3.12 TB Used: 14.53GB.

However, when Partition, it says This partition contain a locked disk and can not be resized until it is unlocked. All choices are gray color.

HOW DO I UNLOCK IT.

PLEASE HELP!

Linc Davis

Level 10

209,547 points

Feb 9, 2016 7:55 PM in response to sharonfromredondo beach

Did you encrypt the volume with a password?

Feb 9, 2016 8:04 PM in response to Linc Davis

I do not uderstand what you mean. I did not do it. Right now the drive status is ONLINE and not available for me to restore or install OS X.

Verify and repair disk both showed OK. Diagnose showed No Issue Found.

What can I do now?

PLEASE HELP!

Thank you very much!

Linc Davis

Level 10

209,547 points

Feb 10, 2016 5:13 AM in response to sharonfromredondo beach

This is my last comment on the subject. If a drive is read-only, that's because it's failing. Good luck.

Feb 10, 2016 5:59 AM in response to Linc Davis

HI, Mr. Davis,

Just thought you might be interested, I got my Fusion drive back and it is installing OS X Mountain Lion which came with the machine right now.

I went to Terminal, typed diskutil cs list and it showed logical volume. I copy the volume and on the next command line typed diskutil cs. ceateVolume and pasted volume then jhfs+ Macintosh\ HD 100% and hit enter, I got my Fusion Drive back! Disk status is now OWNER ENABLED.

I love my Mac and Apple support people are great!

How to improve performance using PCI drive