Yosemite ejects second (internal) HDD hard drive

Before Yosemite, my machine (2010 MBP 15") worked great with:
Main drive: 128 SSD
Second (internal) drive: 750 HDD
Ever since Yosemite, my computer will randomly eject the second internal drive.
I thought it was the drive, so I put the original 320 HDD in the optical bay and I got the same message:
Anyone else have the same issue?
Anyone get it resolved?
Thanks!

Thanks for your answer.
No place in my L500-19e.
I have installed a HDD bay for the CD ROM Slot.
In the original HDD slot works a SSD 840 Pro 128 GB with Win7 Home 64 Bit
In the HDD bay works my WD (1 TB)
My L500-19e have an new Name: Vettel (Formel 1)!!!!! :-)
Windows start before: 00:01:55
Windows start news: 00:00:40
Installed an migrated (Samsun tool) in 45 minutes.
I'am happy!!!
Chris

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Second internal HDD ejecting

Hey,
I could really do with some help here.
I have a 13inch early 2011 MacBook Pro that's having issues with a second internal HDD I fitted.
I replaced the 320gb HDD with a 240gb SSD and then fitted a 1TB drive in the optical bay as I needed a performance boost and some more storage.
The issue is that anytime I transfer any files that are fairly substantial it results in the 1TB drive being ejected and I get the typical message about a drive being ejected etc.
Now, this happens once in a blue moon as I mostly use the MacBook Pro for photography, more often than not the files aren't enough to trouble it.
I do however, have two video projects that I need to export and the drive keeps ejecting on me every time I tell Premiere Pro to export.
To save the hassle of moving the media files over and creating the project again does anyone have any tips or hints to get this running properly?
Macbook specs:
Processor 2.3 GHz Intel Core i5
Memory 8 GB 1333 MHz DDR3
Graphics Intel HD Graphics 3000 512 MB
Software OS X 10.9.4 (13E28)
Really appreciate any help on this
Rod

I have nt used the device that you mention but I have heard from a few people that it works quite well. From what I understand, there is one caveat for you to think about... Apparently iDVD only works with an internal DVD drive, so with one of these you will need to use some other application for watching DVD movies on your MBP.
I have been told that using one of these in combination with an SSD drive for booting your OS (in the internal bay/slot) that you get the best of both worlds. You get fast boot times, and you get the larger storage drive for installing applications. Once again, no personal experience here though.

Want to swap internal 120GB hard drive with 500GB but retain Aperture Lib

I am still on Aperture 2 but want to upgrade to Aperture 3. Current Aperture lib has grown to over 40GB. My laptop is starting to get generally slower and I feel that I have a lot of HDD fragmentation that I have not resolved yet. My internal HDD is 120GB with only 19GB now available. I do a monthly backup to an external 500GB drive using Time Machine. No other backups performed nor do I do any Aperture backup including vaulting. My laptop is roughly 3 years old.
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1.) Purchase another 500GB portable external drive.
2.) Divide new drive in 2 partitions; bootable 300GB and 165GB (remainder is used in formatting).
3.) Copy my entire internal 120GB hard drive to bootable 300GB partition as a full system backup.
4.) Start Aperture.
5.) Vault my entire Aperture 2 library to non-bootable 165GB partition.
6.) Stop Aperture.
7.) Have Apple technician swap out internal 120GB drive and replace it with a new 500GB drive.
(Data will not be copied from old drive to new drive by Apple tech.).
8.) Boot the reconfigured laptop from the 300GB external drive.
Q1.) Is it possible to boot from an external drive with no data on the internal drive?
9.) If yes, copy the 300GB drive to the new internal 500GB drive. (Maybe format 500GB first?)
Q2.) Will the copy put in place all previous software e.g. Aperture, etc. on new drive.
Q3.) Will I be able to start Aperture and retrieve images without accessing 165GB partition?
Q4.) If I can not access my Aperture library images after the copy, can I restore the library
from the vault operation in step 5?
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Hi metoymi;
Personally I don't like your plan. Even with two partition on a single drive all of your eggs are in a single basket. The most like disk problem is disk failure which will wipe out both partition on the single drive.
I know it is more to carry but I would suggest that you at least consider putting the old drive in a portable shell and using that for your vault instead. At least that way a disk failure is only wipe out half of your data.
Allan

Help! Won't start without internal Audio hard drive

So here's the issue.
I've been having some problems with my internal Audio hard drive where it will randomly un-mount and I think it might be causing crashes. Anyway, I decided I'd just take it out and use an external drive. When I did that and tried to restart, the computer just loses power. It tries to start and then just shuts off, I never even get anything on my screen.
If I reinstall the drive, the computer starts up.
Also, when I take the drive out, it refuses to start from an external drive or a dvd.
I've tried resetting the PRAM, the NVRAM and the Open Firmware with no results.
Any help would be greatly appreciated.
Thanks,
Stephen

Yeah, there is. It seems to work fine when the second drive is hooked up and I've made sure it's set up as the boot drive in system preferences. The drive I'm using as the Audio drive is actually the original hard drive that came with the system and the boot drive is a newer SATA drive.
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Mid-2009 MacBook Pro sees internal SATA hard drive, but will not boot from or format

I inherited a Mid-2009 MacBook Pro (15-inch, 2.53 GHz model) with a very strange issue.
It first presented itself as not being able to boot from the internal SATA hard drive that came with the computer. Nothing I tried could get it to boot, so I assumed the file system was corrupted beyond repair and booted from a CD to try to format the drive. Disk Utility on the CD would not format the drive, giving me strange error messages like "Unable to write to the last block of the device".
At this point I figured the drive itself must be toast, so I pulled it out and put another known-good SATA hard drive in, booted from CD, and attempted to format. Again, same error messages and an unsuccesful format.
So I had the bright idea of formatting one of the drives in an external enclosure and then putting it in the MBP to see if OS X would even install. No dice. Get a cryptic error message before installation even begins.
So I installed OS X on the drive in the external enclosure and put it in the MBP, and it attempts to boot, but never goes anywhere.
So to sum up, the symptoms I'm seeing:
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MacBook Pro WILL boot from any CD or external device and seems to work properly otherwise.
At this point I'm thinking it's one of two things: the hard drive ribbon cable or the SATA controller on the logic board.
Since the MacBook Pro seems to work completely fine other than this one issue, and will boot properly from both external devices and the CD (also a SATA device), I'm thinking and hoping that it's just the hard drive ribbon cable. From my searches online, I've heard that this batch of MacBook Pros is known to have issues with the hard drive ribbon cable, but it seems in most cases this manifests itself by the Mac not being able to see a drive at all.
I've done quite a bit of troubleshooting to get to this point, but right now I'm just looking for any feedback at all. Specifically I'd love to know a way I can easily test to see whether it's the logic board or the cable.

UPDATE: An interesting development!
I just tried a third known-good SATA hard drive, one which I believe supports SATA I only (but I'm not sure), and unlike the other drives that the Mac sees but cannot properly interact with, the Mac can't even see this one when I put it inside.
Frustrating as this may be, I believe I'm actually getting closer to a solution since my symptoms now appear to be closely aligned with people having SATA ribbon cable issues.
Onward!

How to test RAM and HDD (Hard Drive).

Introduction
HP machines have built-in Bios testers for RAM and HDD's.
To use them you need to enter Bios by pressing F10 on startup. They are placed under ' Diagnostics menu '.
Why I wrote this guide and complicate whole situation?
There are three reasons:
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Not always you will be able to enter Bios. Sometimes corrupted hardware is blocking possibility to run it.
Advanced diagnostic softwares for hard drives allow to fix some problems.
Table of Contents:
A How to test RAM with Memtest86+.
B How to test HDD (Hard Drive).
** Say thanks by clicking the "Thumb up" icon which is on the left. **
** Make it easier for other people to find solutions, by marking my answer with "Accept as Solution" if it solves your issue. **

Ad. A
There are few possibilities to run this program. In this guide I will present how to run it from:
CD
       and
USB Flash Drive.
First we need to burn Memtest86+ on a CD or prepare properly USB Flash drive with a special tool.
Here you will find Memtest86+ home page from which you will be able to download correct version of this software.
Solution 1. CD:
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Solution 2. USB Flash Drive:
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Leave USB Flash drive in USB port or CD in CD/DVD drive. Restart your system and on startup press F9 key repetitively:
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** Make it easier for other people to find solutions, by marking my answer with "Accept as Solution" if it solves your issue. **

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This procedure is a diagnostic test. It makes no changes to your data.
Please triple-click anywhere in the line below on this page to select it:
ls -@ORaen /S*/L*/E*/AppleUSBEthernetHost.kext | pbcopy
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing the key combination command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.
Wait for a new line ending in a dollar sign ($) to appear below what you entered.
The output of the command will be automatically copied to the Clipboard. If the command produced no output, the Clipboard will be empty. Paste into a reply to this message.
The Terminal window doesn't show the output. Please don't copy anything from there.
If any personal information appears in the output, anonymize before posting, but don’t remove the context.

I ejected second internal drive accidentally - how do I find it?

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Hi
http://www.prosofteng.com/products/data_rescue.php
Download this trail Software , and install it.
open the Software and See if you are able to detect it from the Disk rescue
_*2nd option*_
http://www.alsoft.com/diskwarrior/
have a look on this web site
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When display turns off system improperly ejects Western Digital external hard drive. Yosemite 10.10.2

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About a year ago I replaced my internal 500gb HDD in my MacBookPro8,2 with a SSD drive and moved the original HDD to replace the DVD drive.
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I just found this at http://www.macfixit.com.au/owc-data-doubler-optical-bay-hard-drive-ssd-mounting- solution-for-macbook-and-macbook-pro-unibody-models.html
Special compatibility notes related to use of this product with 6Gb/s SSDs in the following machines:
2011 MacBook Pro 15" (Model ID MacBookPro8,2)
2011 MacBook Pro 17" (Model ID MacBookPro8,3)
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Hello from the snowy mountains of Savoy !
My computer is a Qosmio X770-13E.
I am disappointed because it runs very slowly (I have the "windows 7 explorer green bar problem" ...)
I have extended the RAM to 8 Go : no real speed change.
In this computer there is only one hard drive (750 Go, 5400 turns/minute).
The windows hard disk access evaluation is only 5.9 !
There is an empty place near the hard drive, so I wonder if it is possible or not to add a second internal hard drive or even a SSD.
I have searched for this in the user's manual : no answer !
And on the web, I have also found no answer.
Perhaps on this forum ?
Thanks, and excuse me for my "amateur english" (I am french !)
Jerome.

Generally speaking it is not easy to discuss about notebook performance. Every of us uses notebook with specific configuration and preinstalled applications that may run in the background and slow down notebooks reaction.
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IMac freezes for a few seconds after external hard drive wakes up

24-inch iMac, early 2008. 4GB RAM.
I hear my external hard drive spin up as if it's been not spinning (totally possible; I only use it for Time Machine backups and iMovie archive storage)
During this spin-up process, my iMac (Mountain Lion, latest version) freezes momentarily--keyboard, mouse, screen--but audio remains faithful and music keeps playing.
After about 5 seconds of this delay, the thing catches up with itself and everything I was doing during the freeze gets processed and displayed. (e.g., I may have been typing a sentence and didn't hear the disk spin up at first; once the disk "comes back to life" everything I typed appears on screen as if everything was being typed really quickly--as if my keystrokes were just delayed while the disk spun up.)
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go to apple logo > system preferences > spotlight
then
there are two tabs
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drag the external into the spolight privacy section
OR
hit the "+" at the bottom left > navagate to the external > and choose it
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also
if it is a Time Machine backup it is pointless as Time Machine mirror images your internal drive to the external
meaning
spotlight has two of the extact same files and folders it has to organize
aka
pointless
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ITunes refuses to read music on second internal HDD

Hello!
I realize this topic has been asked to death, we need some form of sticky topic! After a bit of searching, I haven't turned up anything I haven't tried.
Here goes:
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Method 1: Read this topic: http://discussions.apple.com/message.jspa?messageID=607487
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Any tips?
One more thing: How can you tell who is listening to your shared iTunes library? There used to be a widget for that - but I can't find it anymore.
Thanks,
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Right, I know. But the procedure of choosing a new location for the library, checking the box, and having iTunes copy the files is the same for both platforms. I suppose I was too lazy to type it out, hm?
Anyway, It's actually copied from my Powerbook - the Powerbook library is the master copy, although I like to have a fairly current library over on the G4 as it's very useful when the Powerbook is packed up for school, or when I'm taxing the Powerbook to the limit (eg, Final Cut render, gaming, etc). It's a fairly simple matter to copy the files, although long. And for what it's worth, they were all still in the trash - I had yet to delete them! So, everything was still there.
What I eventually did was just to copy them back to the original boot drive, then follow the select-new-location>let iTunes copy method, then just delete the MUSIC files, not the iTunes-required files. Essentially, your second Apple help doc link. It works like a charm now.
Sigh... that's one of those "DO'H" moments.
Thanks,
-Dan

MacBook fan running high most of the time after HDD/Hard-drive Upgrade

Hi guys,
I've just recently upgraded my MacBook white's (MacBook5,2, 2GHZ duo core, 4GB ram) stock harddrive to a WD 2.5" black 750GB. After which, I noticed my macbook fan running at high speeds majority of the time... Even when just doing light weight stuff on it, such as surfing the net using Safari or even just leaving my computer idle after startup.
I did a clean install twice, the second was too see if it was really just a badly installed OS, but the problem still persisted, well at least till I decided to come here to type the post =P (maybe my macbook's scared about being talked about). Do note, that I did a pc migration each time.
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As for the harddrive temperature, I noticed it runs between the 37 degree to 40 degree celsius range, so I'm guessing the hard-drive temperature sensor isn't busted, which was the problem for others from what I've read from other discussions here.
Also, when I boot my windows partition, the fan doesn't go as crazy, but it eventually will too.
Any idea what the problem could be? =s Or could it be that my MacBook can't handel 7200rpm hard drives =/ If so I'd probably downgrade to a 1TB WD blue =s
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Edwin

Hey Mende1,
Well I guess I'll try returning the drive at the end of this week then my fan seemed to have slowed down abit since the upgrade, it's sorta spinning around 3000rpm now. I'm not sure if it's gonna be the same thoughout, and I'm pretty sure it doesn't spin as much as it did when I had my old HDD on. So I'm giving it a few more day probably till the end of this week. And if the noise issue still surfaces I'll try a different hard drive! and update you on the results!
Thanks alot Mende1!
And hello there rauldoppler!
Well, firstly, I'm using a early 2009 MacBook white! The pre-unibody one. It's running on a 2GHz Intel Core 2 Duo processor with 4GB for ram.
As for the hard-drives, I'd actually reccommend you to upgrade to an Solid State Drive if you can afford it, but if you're like me who needs more memory space then boot speed etc, I guess a HDD will be fine =) As for which brand of hard-drives, I would actually recommend WD (their black drives especially, 5 year warranty, 7200rpm speed hehe), but right now I'm having the fan problems, so I'm not too sure anymore.
I did however, do quite abit of digging around on the net and concluded that WD was a better choices amoungst the rest... But yeah the fan issue is still something I didn't expect. All in all, I guess as for which drive is better, it really depends on your needs or wants, if it's for casual internet surfing and stuff, a WD blue HDD would be fine, or a black if you want a slightly faster boot speed etc at the expense of your battery life and all. If you however value blazing fast boot times and application start up times, go for an SSD. If you need the memory space more then anything then I'd say go for a HDD again too, as it's cheaper interms of gigabite to dollar ratio. (for example, the older 500GB version of my new WD black would cost USD $43, while a Samsung 500GB SSD Pro would cost $349) Also, You could do abit of reading up on SSDs if you're interested in it There's alot of plus points to it, like ALOT, and if the price tag wasn't so huge, I would have used it for my macbook already!
Lastly, I used a WD Black 750GB for my macbook upgrade. However, I'm gonna downgrade to a WD blue 1TB this weekend if the fan doesn't settle down over time Cause well, the fan noise is really an issue for me.
Peace out guys!
Edwin

Yosemite ejects second (internal) HDD hard drive

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