Mount an external drive that use to be the os x main drive

I had this problem for a while and when clean my room i found the drive again.here is the issue. I was upgrading my mac pro with a new 1Tb drive and replace the 250g drive that it came with.I first tried to use the migrate tool to transfer my things over but i noticed that it did do it all. I tried to mount the drive as an external so i can see what is on it so then i can finally reformat it. When i plugged it the drive didnt mount. I went to disk utities and it was in there so i hit open the hard drive but i only saw a few folders and when i tried to see folders like pictures it took me back to this harddrives picture folder.

Thanks for your reply LexSchellings, There is no disc in the drive and I went through the suggestions you put forward on the phone with Apple support without any luck. I can put a disc in but it pops straight back out again without registering on finder.
The idea of using an external drive was to enable me to avoid the cost and loss of productivity whilst machine in repair... if I have to take it in to get the old drive removed than I might as well have a new internal drive put in, although I do worry about the reliability of these apple drives given my experience with this one coupled with my limited online research ... on line forums seem to be full of people with the same problem (although perhaps searching such forums is bound to make it seem a common problem as users with perfectly working machines are less likely to post (?)) Your reply suggests that no external drive will work whilst the existing drive is in place.
As a postscript: I do realise that this is a user forum ...my secondary question was asking if anyone knows how to put forward a case/complaint to Apple... I can't find a link on the support page that would enable me to do so and I was wondering if anyone on this user forum had any ideas/experience..

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ok, I did find the log in Diskutil of what happened, I just can't figure out why it happened and how to start over:
2014-04-20 13:42:08 -0400: Disk Utility started.
2014-04-20 13:44:30 -0400: Preparing to erase : “Terra 8”
2014-04-20 13:44:30 -0400:           Partition Scheme: GUID Partition Table
2014-04-20 13:44:30 -0400:           1 volume will be created
2014-04-20 13:44:30 -0400:                     Name                    : “Terra 8”
2014-04-20 13:44:30 -0400:                     Size                    : 2 TB
2014-04-20 13:44:30 -0400:                     File system          : Mac OS Extended (Journaled)
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My computer it won't mount my external drive

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"Todd Gould" <[email protected]> wrote:
>
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My 5 yr old 2 GHz Intel Core Duo 20" iMac, right after I disconnected an external HD that had been on the desktop (i.e. I forgot to eject it properly), started displaying video anomalies (lines); testing (TechTool Deluxe 3.1.3) indicates the video is f

My 5 yr old 2 GHz Intel Core Duo 20" iMac, right after I disconnected
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My soldering skills are, sadly, poor.
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Apple Training Series "Desktop and Portable Systems, Second Edition"
but it only goes up to the G5 20" iMac. There doesn't appear to be a
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this:
Did not exist at the point of delivery to the consumer.
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How to mount an external drive?

My external drive, used for Time Machine, is not mounting. I've tried Disk Utilities which sees the hardware but not the partition so I can't Verify or Repair. I've run Disk Warrior but it does not see the drive either. (Also tried zapping SMC and the safe-mode reboot.) Since the drive is showing but not mounting, is it reasonable to assume the hardware is okay, but it is something is messed up with the status/data?
I replaced the previous Time Machine disk about 2 months ago because its 2TB had filled up over 5 years. This one seemed to be working fine then today, poof, it's gone.
Thanks for any advice on next things to try. Failing that, suggestions on a good data-recovery service.
bash-3.2$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *256.1 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Computer                    255.2 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
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Might try a mount from Terminal with
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How do I re-mount an external drive in Lightroom 2 running on Windows 7?

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Lightroom does not have a disk utility.
a) Make sure the drive is visible and accessible via <My Computer>. If it is visible in <My Computer>, Lr should also see it as connected.
b) If it is not check if the power for the drive is <ON> and remove and re-connect the USB / Firewire / eSata cable.
c) If this doesn't help: Check in <My Computer> if the drive has the same drive letter as before. Sometimes Win 7 changes the drive letter, and then Lr cannot find the drive.
In this case you have to change the drive letter to what it was before.
d) If the drive letter has not changed and Lr still cannot see the drive, try this:
Put one dummy photo on the external drive - via Win Explorer. It can be a copy of another photo but - in Win Explorer - change the name of the dummy photo to something descriptive.
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Mac OS 10.4.10 / Unable to mount my external drive

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I've done some searching around the support forums and found that this was a problem for a few people upgrading to 10.3.9, but I haven't seen anything yet about this behavior with the 10.3.10 upgrade.
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I took my MacBook Pro into the Apple Store today and the Genius wasn't able to figure out the problem. He claimed it was the drive being finicky. We eventually rolled back to OS 10.4.8, which I then upgrade to 10.4.9 and it works just as it used to before I upgraded to 10.4.10.
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Auto mount/eject external drive for time machine backup/restore

I have an Iomega ultramax drive connected via firewire 800 for my Time machine backups.
This drive will automatically spin down after a period of non-use. I like this as it means lower power usage and lower risk of data loss (head crashes etc..).
My problem is, when the drive spins down like this, some file open operations pause until the drive spins up again. I cannot remember exactly which applications I have had the problem with, but I assumed that this was part of the OS. This delay can be up to 5 seconds or so and is really annoying.
Assuming this is not just a specific third party application thing. My suggestion to Apple is to do one or both of the following:
1) Multi thread the file open dialog (process?) so that is comes up instantly, and then adds the drive when it has spun up.
2) Modify time machine so that it can automatically mount/eject the external drive just when doing backups and restores.
Currently I have a bit of a messy work around to this problem where I have a loadd scheduled shell script that runs every hour that mounts the drive, runs time machine to backup and the ejects the drive. It works, but is not perhaps as nice a solution as it could be.
Does anybody else suffer from this problem?

Yes that is correct, the drive spins down and remains mounted.
To be perhaps clearer. The problem is not essentially a time machine problem, it is to do with whatever implements the file open capability that other apps use. In the above sitation, there is always a delay for the drive to spin up when I go to open a file (perhaps five seconds) in other applications. I assume this delay is caused by the file open process waiting until some data is retrieved from the external drive before giving me the option of choosing a file. This delay is annoying, as I do not ever want to open a file from my external drive (this is dedicated to time machine backups) when I am using pages, or any other application other than a time machine restore.
This particular issue is similar (but I suspect nowhere near as bad) as one of my pet hates about windows XP. In windows it appears that the explorer will wait for a response on all its connected drives (hard disks, mounted cds, network drives), so any sort of network connectivity or hardware delay will cause explorer to freeze. As explorer seems to be embedded in most things you do with the OS, this can cause anything or everything to freeze (web browsing, you name it).
In my setup, as I have the external drive totally dedicated to time machine backups, another thing that would fix the problem for me is the suggestion number 2 I suggested where time machine auto mounts for the backup and then ejects after the backup. With the feature, then the external drrive will only ever be mounted for short periods of time (the above problem does not ocurr if the external drive is not mounted), and when it is mounted it will be spinning, so I will never have my file open delay. I would however have a short delay when doing a time machine restore for the mount of the drive, but this is a much rarer event the using file open in all my other apps.
Thanks for the info on the feedback link, I will post this to that.

Can't mount my external drive

I have a MacBook Pro 15", 2.8 GH, Snow Leopard 10.3; I bought it on september, 2009. I also have an external Western Digital hard drive: 2TB, MacBook Studio II. I use it for back up only, through Time Machine; the disk itself was bought in december 2009.
A week or so I connected my MBP through the firewire port and it the disk didn't mount automatically as it usually does. Time Machine simply says that it can't back up because the hard drive isn't available. I restarted the computer with the drive connected, but nothing happened.
The first time this happened I just droped it. A few hours later I connected the disk again and, voila, it was there, as usual.
This week I have the same problem again. Only this time, after a few hours, I can't still see the disk. I've checked on the Western Digital website and they have no drivers at all.
What can I do? What can possibly be wrong?

Can you see the drive in Disk Utility? If so, can you get it to mount with the mount button? Can you use Disk Utility to repair it?
Also, do you have any other FW devices you can try to check out the port itself?
I don't really know what the problem is. I had something similar happen to me with my iBook, where the external FW drive didn't mount at all and couldn't be seen by Disk Utility either. I then tried a USB cable and the drive mounted. After doing the backup, Super Duper wouldn't force quit and the iBook froze--even the beach ball froze. I had to shut down using the power button.
Next I tried the drive on my MBP FW port, and it mounted. I decided to repair the backup and it had errors that would not repair. I then erased and reformatted it. I then tried the iBook FW port and the drive mounted. I then did another Super Duper backup, and ever since, the drive has mounted and worked without issue.
Don't know if any of this sheds any light, but I eventually surmised that the FW port on the iBook must have not been working properly, but that the shutdown and restart seems to have reset it.
I'm thinking it might not hurt to go through the procedure to shut down your computer to reset the ports:
http://support.apple.com/kb/HT1317?viewlocale=en_US
It also wouldn't hurt to boot from your install disc and navigate to Disk Utility and repair your boot drive. Also use Disk Utility to repair your external drives. I took all of these steps, and have had no issues since.
Good luck!

Mount an external drive that use to be the os x main drive

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