How to stop Time Machine backing up on a specific external hard drive?

I work on a iMac 2.66 Ghz Intel Core 2 Duo, with Mac OS X 10.6.8. I use two external hard drives that are the exact same model, 2 TB WD My Book 1110 Media: one is intended for back-up, the other for storing video editing files. They're both connected through USB 2.0.
I set the "back-up" hard drive as back-up disk for Time Machine, through the Time Machine preferences. Now, everytime I connect the "video" hard drive, Time Machine recognizes it as a back-up disk, and starts backing up on it. I could delete the "Backups.backupdb" file that Time Machine had created by connecting the "video" hard drive to another Mac and moving it to the Trash, but as soon as I reconnect the "video" hard drive to my iMac, Time Machine backs up on it again.
Is there a way to "de-select" a hard drive from Time Machine's list of back-up disks?
Note: I should mention another thing that might indicate a conflict. When both hard drives "back-up" and "video" are connected to my iMac, if I open Final Cut Pro X, I can only see my "back-up" hard drive. To access the files I am working on, I need to eject the "back-up" hard drive, and suddenly the "video" drive appears.
If you have any idea of how to solve this conflict... I am a bit lost.
Thank you!

Welcome to Apple Support Communities.
Give them unique volume names using Disk Utility.
Then set Time Machine back up to that unique volume name.
For example, I regularly use 4 external drives (though they're not all the same model).
The descriptions quickly tell me which drives I have connected to my MacBook when open Finder:
My Time Machine backup volume is named 'Time Machine 1TB'.
My iPhoto backup volume is named 'iPhoto Backup 320GB'
My iTunes backup volume is named 'iTunes Backup 120GB'
and the last is 'Windows 7 Backup 250Gb' but since it's a Windows volume, it is formatted NTFS.
This likely means that you will have to erase and repartition one of your drives to name it.
You MIGHT be able to rename it using Finder, right-clicking on the volume, and selecting Rename (current volume name).
WARNING: I can't be certain of what just renaming it that way could screw up in the way of permissions and file links.
Within Disk Utility, it seems it is absolutely not possible to change a volume name without clicking the Partition tab, and that involves erasing.
Given the choice, I'd probably choose to rename (erase and repartition) the Time Machine drive. A current backup or two on Time Machine, and I'm good. I don't really need to go 'way back' to recover files, because I really don't ever erase anything. I just keep buying bigger drives!
And I still burn the 'absolutely critical, priceless, can't ever be without this stuff' files to DVD or CD at least monthly or quarterly, in case one of my TM or backup drives fails at the same time as my primary hard drive. Call me paranoid, but I worked in Information Technology for many years: Murphy was an optimist!
Message was edited by: kostby

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Time Machine back up made from an external hard drive

Hi...to all
Last week i bought a Macbook. I pluged in my external hard drive Maxtor OneTOuch 4 Plus and it did a time machine backup on the Maxtor OneTOuch 4 Plus. The folder that was generated by the time machine on my external hard drive has the name backups.backupdb.
Then, i decided to return the Macbook and bought a Macbook Pro.
When I pluged the same external hard drive, Maxtor OneTOuch 4 Plus, although I am able to access and open individual files and folders, I am not able to copy neither any nor all the folders from my external hard drive to my new Macbook Pro. Moreover, I am able to access/open the files located in my external hard drive but when try to copy specific files from this drive to my Macbook Pro I get the following error message: Sorry the operation could not be completed because an unexpected error ocurred (Error code -50). Now, here is where it gets interesting: after 2 failed attempts to copy files from my external hard drive to my Macbook Pro desktop and receiving the above error message I am then able to copy the specific file (singular). This would mean that to copy the files and folders in the external hard drive i would need to do it on a one by one basis? If so, it would take forever...
Can someone please kindly help out.
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Hi Sunny Beach 1024;
Since your question deals primary with Time Machine, you might get more results if you post over in the Time Machine Forum.
Allan

I upgraded to Maverick and now Time Machine will not connect to the external hard drive to back up files. The external hard drive is a Western Digital "My Book Live" 2 TB. How do I solve problem?

I upgraded to Maverick and now Time Machine will not connect to the external hard drive to back up files. The external hard drive is a Western Digital "My Book Live" 2 TB. How do I solve problem?

I also had problem accessing my WD MyBookLive after upgrading to Maverick.
To resolve the problem, I used Connect To Server (Cmd K) to specify the IP address.
Then I enter a user id and password I created in the MyBookLive.
You can also verify that you have admin access to the MyBookLive using Safari or Chrome.
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I just backed up my mac to an external hard drive using Time Machine. What would happen if I turn Time Machine off and then plug the external hard drive back into my computer?

I just backed up my mac to an external hard drive using Time Machine. What would happen if I turn Time Machine off and then plug the external hard drive back into my computer?
What I am ultimately wanting to do is make more room on my computer by backing up all of my files onto the external hard drive and then deleting them off of my computer. However, neededing to be able to retrieve them from the external hard drive later down the road.
From what I have read and am trying to understand, is that I probably shouldn't have used time machine. I need to use the external hard drive like a basic flash drive where I can put things on and get things off without having it automatically update through time machine everytime I connect it to my computer.
Not tech savvy at all and barely understand basics. I need very simple and easy to understand explanations.

sydababy wrote:
and then deleting them off of my computer.
BIG BIG MISTAKE ..... youre making a linchpin deathtrap for your data trying to shove everything on a single fragile HD.
Dont suffer the tragedy other people make, buy another or 2 more HD, theyre cheap as dust.
The number of people who have experienced terror by having a single external HD backup is enormous. One failure that WILL HAPPEN, and kaput,......all gone!
Dont do it, its all about redundancy, redundancy, redundancy.
follow here:
Methodology to protect your data. Backups vs. Archives. Long-term data protection
Deleting them off your computer is fine....having only ONE copy is extremely BAD.
The Tragedy that will be, the tragedy that never should be
Always presume correctly that your data is priceless and takes a very long time to create and often is irreplaceable. Always presume accurately that hard drives are extremely cheap, and you have no excuse not to have multiple redundant copies of your data copied on hard drives and squirreled away several places, lockboxes, safes, fireboxes, offsite and otherwise.
Hard drives aren't prone to failure…hard drives are guaranteed to fail (the very same is true of SSD). Hard drives dont die when aged, hard drives die at any age, and peak in death when young and slowly increase in risk as they age.
Never practice at any time for any reason the false premise and unreal sense of security in thinking your data is safe on any single external hard drive. This is never the case and has proven to be the single most common horrible tragedy of data loss that exists.
Many 100s of millions of hours of lost work and data are lost each year due to this single common false security. This is an unnatural disaster that can avoid by making all data redundant and then redundant again. If you let a $60 additional redundant hard drive and 3 hours of copying stand between you and years of work, then you've made a fundamental mistake countless 1000s of people each year have come to regret.

HT3275 When I press "select backup location" in the Time Machine section of System Preferences, my external hard drive doesn't appear as an option. How do I change this?

When I press "select backup location" in the Time Machine section of System Preferences, my external hard drive doesn't appear as an option. How do I change this? My external hard drive is a FreeAgent GoFlex Drive.

Hi, what Format is the external Drive?
They usually come PC Formatted for Fat32/MSdos, or NTFS... is there anything on it now?
How to format your disks...
http://www.kenstone.net/fcp_homepage/partitioning_tiger.html
(To Install OSX on an IntelMac the Drive it needs the GUID Partitioning scheme mentioned at the bottom.)
Thanks to Pondini, Formatting, Partitioning, Verifying, and Repairing Disks...
http://Pondini.org/OSX/DU.html

If I deleted a file on my Mac would Time Machine delete its copy on my external hard drive when backing up?

I just finished backing everything up onto my new 2T WD My Book Essential because my Macbook Pro is absolutely full of Photoshop files. I want to delete them from my Mac (since they're backed up) but I'm too scared Time Machine will delete them from my external hard drive.
Thanks in advance.

Move the images over to an external drive that is connected to your Mac by USB or FireWire.
Then....Time Machine will backup both your Mac..and..the hard drive automatically.
Can you elaborate on this?
I have a 128GB McAir (mid 2011 model) with a 2GB TC for backup. I need another external hard drive to save pictures and home HD videos. I wanted to partition the TC but learned that is not recommended. So now I’m looking to get two external hard drives to store priceless files and back it up.
Your comment makes me think I only need one external hard drive and use the 2GB TC as backup. A good option since 2GB is an overkill for a 128GB notebook.
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SMH5206 - I tried letting it sit and crank overnight twice. First time I thought it was my error causing it to lock up. Now I know better. I haven't changed any of my time machine settings - and actually never used time machine regularly. Only reason I had a fresh backup from last Oct was because I did one before I upgraded to mavericks. Everything worked fine then - and we used that to restore when the hard drive crashed and was replaced. I have actually deleted hundreds of pictures off my hard drive and one entire user, so it should actually be a much smaller backup - so if it did it before on the same external hard disk, I don't understand why it won't now. I'm really confused.
Kahjot - the external hard drive is the same one I backed up to previously - and I have completely erased it and reformatted, and the information I'm backing up now is less, so there should be no reason why it doesn't have enough room now, when there is actually less information on my current hard drive (see my reply to SMH5206). When I plug it in, it says it is a 500.07 GB WD "My Passport"
I've even tried to have time machine only backup certain files, and not the whole thing. Still locking up.
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Deep breath in...... reeee laaaaaaaxxxx

HT3275 where did my time machine back up go to on new hard drive?

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You may have already done these resets in the "tried all I can think of " portion of your post.....if not then here they are.....
PRAM
support.apple.com/kb/HT1379
SMC
support.apple.com/kb/HT3964
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You might get some responses, but we don't see many Linksys users on an Apple forum so it may be awhile before you see an answer.
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It might have created a new user and loaded under that.. new user being the old user. But if you have issues do it again, only this time pick where the backup will go.
http://pondini.org/TM/16.html
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Thanks!

This is a frustrating issue compounded by Apple’s penchant toward hopelessly poor documentation.
My problem concerns an old G4 (AGP) with an OEM Adaptec SCSI board and internal SCSI drives. That probably doesn’t matter but one of the drives (one of three) recently died. I had a back up with Time Machine to a firewire drive. But, when I put in a new SCSI drive and tried to restore - the fun began! At first I tried to select the old drive in the TM - from the “my computer” folder and copy it to the new differently named drive. That resulted in a “Preparing Copy” hang. 18 hr later I gave up! I then tried to open the TM drive directly and move the old disc (as a full folder) to the new drive - same result happened. Finally, I found this discussion. It worked for me!!! I renamed the new drive the same as the old one and starting from that newly named folder went into the Time Machine, found the latest copy and after a “select all” of all the files and folders there, accomplished a successful restore! Now, what I suspect really happened is the “select all” step. Using this this technique you have to actually go to the backed-up folder within TM and select all the files in it, then restore. Perhaps if I had done that with one of the other attempts it would have worked - who knows - I didn’t do the experiment? Thanks to Scott (a lot!) on this one.

How to stop Time Machine backing up on a specific external hard drive?

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