Wrong DVD drive opens on 2009 Mac Pro

Hello,
I have a 2009 Mac Pro with two DVD drives. Since upgrading to Mavericks, I've noticed some unusual behavior:
1. Ocassionally, the incorrect DVD drive ejects/opens. For example, when I attempt to open the top drive, the bottom one opens, and vice-versa.
2. Ocassionally, when I simultaneously burn 2 DVDs of the same items, I find that one of the DVD drives burns all of the items without problems, while the other one only burns a small number of the items.
3. After inserting a blank DVD, and selecting the "Burn (item name) to disc" from the right-click menu, a long time passes before the "Are you sure you want to burn..." dialogue box appears.
Has anyone else experienced this constellation of symptoms? Are they connected? And what sorts of remedies have worked?
Thanks in advance for your help!
Berwynman

Hi-
A PRAM reset should clear that up.
Did it for me in the past.

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True but I catch all the Mail, Cache, /SyncServices and /Application Support - and for some reason the /Preferences folder is getting hit a lot.
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Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
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If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 6
Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 6.
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Step 7
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
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Boot Camp, Vista Ultimate x64 SP1, 2009 Mac Pro Quad 2.93, ATI 4870 HD

Hello All,
I’ve run into a problem installing Boot Camp with Vista Ultimate x64 SP1 on my early 2009 Mac Pro Quad 2.93 with Apple’s ATI Radeon 4870 HD (the one with one DVI and one mini-display). I followed the instructions from the Boot Camp Installation and Setup Guide, and everything was going great until I hit page 12 of the Guide (Step 3). The Boot Camp drivers installed without error, and prompted me to reboot. Upon rebooting onto the newly installed Vista x64 partition, the screen went black after the chkdsk screen appeared. I can boot into Vista safe mode, but booting into Vista normally results in the black screen. On a hunch, while in safe mode, I uninstalled the ATI video drivers installed by Boot Camp. I was then able to boot Vista normally, but only with the standard VGA adapter. Then I tried installing the latest 9.4 ATI drivers from the chipset vendor, AMD, http://game.amd.com/us-en/drivers_catalyst.aspx. Booting normally after the ATI chipset drivers were installed left me with a mostly black screen, and a few swizzles of horizontal color, but not enough to make out any sort of image. Once again, I was able to boot normally by first booting into safe mode and then uninstalling the ATI driver, leaving me with the standard VGA driver.
The displays I have tried so far are 1) Apple Cinema HD 23”, and 2) Apple Cinema 20”. Also, I have tried all 6 permutations with the ports on the Apple version of the ATI Radeon 4870 HD with both displays (using the mini-display to DVI adapter), 2 permutations with both displays, and 4 permutations with single displays. All permutations result in the same black screen after installing Boot Camp drivers.
Am I missing something? It seems to me that there is a display driver that needs to come from Apple that will work with the Apple version of the ATI Radeon 4870 HD in Vista Ultimate x64 SP1 attached to an Apple display. I’ve installed Vista Ultimate x64 SP1 and many other operating systems in the past 27 years of working with computers, and typically with video cards I’ve had to get the drivers from the vendor that shipped the card, not the chipset vendor. Sure, occasionally the opposite is true, and I don’t mind spending a few days to figure out what works best for me as long as I believe I am making progress.
Has anyone else run into this problem with his or her early 2009 Mac Pro Quad 2.93 with Apple’s ATI Radeon 4870 HD? I’m posting this in the Boot Camp forum as I think this problem is rooted in the Boot Camp drivers, specifically for the Apple ATI Radeon 4870 HD. Please let me know if I should post elsewhere.

You are the second person I think I've seen with trouble using Mac Pro and ATI drivers (other was on Mac Pro forum).
When updating graphics, there are extra steps that insure you get the best working drivers.
I've always found Apple to be behind the curve on Windows support. Drivers that come with a card from the vendor ususally means ATI or Nvidia, and even then, you go to the web and download and install the latest tested / beta / qualified drivers. Some people try a variety of driver versions to find the one that works best.
Apple has not been updating Boot Camp drivers for Late 2008 and on Macs. Boot Camp 2.1 is now over a year old. What is on your OEM Leopard DVD is the only drivers I would use - if at all! try without is what some do, and then see if you can selectively install. Under Windows 7, I don't need or install, and now with the RC/7077 version of 7, Microsoft 'blocks' installing Apple Boot Camp drivers as known to cause problems.
If it ain't broke, don't fix it. Unistall the various Apple services, drivers, startup items that you can live without or until you narrow it down. iTunes 8.1+ in Windows can break and prevent ability to even use optical drives and devices for instance.
Some tips for upgrading drivers, one from eVGA forum but should translate.
http://www.evga.com/forums/tm.asp?m=396474
http://game.amd.com/us-en/drivers_catalyst.aspx
http://downloads.guru3d.com/download.php?det=1655

Wrong DVD drive opens on 2009 Mac Pro

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