Unable to format/write SSD in optical bay

The information on the drive says it is both readable and writeable, and it is correctly formatted. I don't see anything pointing to a problem with the drive. You must have had write permission in order to format the drive.

What is displayed in Disk Utility when you select this SSD from the sidebar and click on the Partition tab? Maybe you can take a screenshot of it and post for me to look at.

Did you prep the drive as follows:

Drive Partition and Format

1. Open Disk Utility in your Utilities folder.

2. After ** loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in **'s status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the ** main window.

3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Apply button and wait until the process has completed.

4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the ** main window.

5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.

6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

I don't know what this means. If you are trying to post a pic, then you must first click on the camera icon in the message composition's toolbar. You can't drag them in.

OK, I got the picture both literally and figuratively. 🙂

Here's what you can try:

1. Shut down the computer for 30 seconds.

2. Reboot to your Recovery HD:

Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the arrow button below the icon.

3. Then do the following:

a. Select Disk Utility from the main menu and click on the Continue button.

b. After ** loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in **'s status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the ** main window.

c. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Apply button and wait until the process has completed.

I think this should avoid the unable to unmount error.

You may have an OCZ model that just won't work in a Mac. You might consider trying an OCZ-Vertex3 model or purchase an SSD from OWC.