Time Machine won't backup my external hard drive.

I am trying to get Time Machine to backup my external hard drive. I have the external drive formated as Mac OS Extended (journaled) and I have also removed the drive from the Excluded list. I put some 'test' files on the external drive and told TM to do a backup and when it is finished the only way I can see my external hard drive in TM is if it is connected to the computer. It doesn't seem to be backed up anywhere in TM that I can see. Please Help
Thanks.

Chihuahua Rancher wrote:
My thinking is that if my external hard drive craps out it would be ok because it would be backed up on the TM (what I'm trying to get it to do) How would I open the external drive if it was damaged and then invoke time machine?
#E3 in Time Machine - Troubleshooting shows how to do that.

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Time Machine won't backup second external hard drive

I am trying to store my iTunes music library on an external hard drive because I have run out of space on my hard drive. I have moved my folder to the external drive, but before I delete the folder from my computer I want to make sure my Time Machine is backing up the drive containing my music as well. However when I go into Time Machine preferences and tell it to include the other hard drive in its backups it says "The backup was not preformed because an error occured while copying files to the backup disk. The problem may be temporary. Try again later to back up. If the problem persists, use Disk Utility to repair your backup disk."
So I have tried again later, and still the same message. I went into Disk Utility and verified my backup disk and it said it was healthy. Ideas as to what I am doing wrong?

Howdy Kgkgkg12,
It sounds like this drive you are wanting to use with Time Machine is not in the same format that Time Machine needs to operate. According to this article:
Mac Basics: Time Machine backs up your Mac
Your Time Machine drive needs to be formatted as Mac OS X Extended (Journaled). If you select an NTFS or FAT-formatted drive, Time Machine prompts you to reformat the drive. Important: Reformatting erases any files on the destination drive. If you're not sure if you want to erase the drive you connected, choose a different drive.
You can check the format of the drive with these steps:
OS X Yosemite: View file, folder, and disk information
Get individual item info: Select the item(s), then choose File > Get Info, or press Command (⌘)-I.
Thank you for using Apple Support Communities.
Cheers,
Sterling

Time Machine won't backup to ext hard drive?

I keep receiving the error message that Time Machine won't backup to my ext hard drive since it can't create the backup file. Why? Same ext hard drive for over 2 yrs. Using iMac (early 2008) with Mountain Lion.

Is it at least twice the capacity of the original?
Is it formatted with a GUID partition?

Time machine won't back up external hard drive

Hello,
Due to my internal memory becoming full, I have connected an external hard drive to store my iPhoto Library.
There is no problem with this however, I cannot seem to get Time Machine to back up the external drive.
It is on the "excluded" list, but I am unable to select it to remove from this list.
Thank you in advance

Are you using that same drive as the backup destination? If so, you can't back it up. Otherwise see below.
In the Finder, press the key combination shift-command-C, or select
Go ▹ Computer
from the menu bar. A window will open showing all mounted volumes. Select the one in question and open the Info window. What is shown as the Format in the General section?

Time Machine won't recognize new external hard drive

I recently had a problem with My Passport and had to buy a new one. I have plugged it in and reformatted it and now Time Machine won't recognize it even though it shows on my desktop and the disk utility doesn't see any problem. Any ideas?

Disable Time Machine from System Preferences.
Choose Select disk button, remove the old TM backup disk and add the new one.

Time Machine: Can I backup an external hard drive?

Hi,
I've been using time machine to back up my internal drive to an external with no probs. its really a boon to use. I make music mainly using logic. I have recently started using an external drive to record all my audio to and to save all my logic projects. My question is:
Can I get Time Machine to recognise and back up my (other, new) external drive that holds all my audio files as well? I thought it might do it automatically when i connected the new drive and also connected my Time Machine dedicated back up drive, but it only backed up my main system drive as before. I can continue to back up manually but I'm keen to use the Time Machine feature to manage backing up my other, new audio dedicated drive - it'll save me time and worry!
I hope this makes sense!

open system preferencs->time machine->options and remove your new drive from the exclusion list. TM will back it up from now on along with your main drive.

Time Machine not backing up other external hard drive

Hi,
I recently upgraded to Leopard and am trying to use Time Machine. I have one external hard drive that is used specifically for the Time Machine Backup, it's called "Backup Drive". The other hard drive is called "Captured Memories" and is used to store my graphic design files. Time Machine seems to backup my iMac because there is a folder called iMac and it contains the files, but the folder for Captured Memories is blank. I was getting errors saying that the backup failed but when I clicked the "Back Up Now" option on Time Machine, it doesn't list the error - but the Captured Memories folder is still blank so it didn't back up that external drive. I also changed the Spotlight preferences so that it does not search the Backup Drive.
Both the Backup Drive and the Captured Memories drives are the same, they're both Seagate Free Agent Pro drives, 1TB each.
The Free Agent Pro drives both have a sleep timer that I cannot adjust, does that have anything to do with why Time Machine won't backup the Captured Memories drive? If that is the case, what other software can I use to backup the Captured Memories external drive? I want it to sync to the Backup Drive because I am constantly saving and moving files around on the Captured Memories drive.
I was using a Memeo backup software that came with the Free Agent Pro drives but the problem I was having is it would make copies of files rather than move them. For example, I have a folder on the Captured Memories drive that is called, In Progress and one that is called In Proofing. So once a project is complete, I move the file to the In Proofing folder. The Memeo software would copy the file to the In Proofing folder rather than move it. So I'd end up with 2 copies of the file, one in the In Progress folder and one in the In Proofing folder.
Does anyone know how I can simply have the drive backed up like that?
What do I do?
Please help! I really need to make sure that the Captured Memories external drive is being backed up!

I am having a similar problem. I initially set it up 3 days ago and had it back up just the iMac to Time Capsule (about 120 GB) which it did no problem (I initially had my LaCie drive excluded). I then un-excluded my other drive, where all my photos and music reside (about 130 GB). Since then, it keeps trying to back up about 102 GB each time. Looking at the list of backups it does not appear that it has ever successfully backed up the LaCie. I am not aware of any error messages, but I have not been home much. I normally shut down the computer at night but I have been leaving it on trying to let Time Machine do its thing. All I can say is that every time I am at the computer TM is running and it always looks like it is in the middle of backing up 102 GB (usually seems to be near the beginning, never seem to see it more than halfway done). Looking at the TM panel it says the latest backup was 2 days ago. I'd appreciate any advice!

Time Machine says both of my external hard drives require reformatting to case insensitive. What do I do?

I have been successfuly using Time Machine to back my iMac to an external hard drive (via usb) and everything has been fine for the last year. I have been using TM to back up to a HD called Terra LaCie via usb.
A week ago, my iMac hard drive was full--so I spulrged and bought a 6 TB external hard drive (Western Digital My Book-Thunderbolt). I set up the new Thunderbold HD to use RAID 1 (mirror) and copied most of my iMac hard drive over to the Thunderbolt HD.
I kept my working photographs (most recent) on my iMac and felt good to know my older photographs are on my new Thunderbolt hard drive.
For a few days, Time Machine seemed to work fine (backing up my iMac to Terra LaCie HD. I haven't been concerned with backing up the Thunderbolt drive (as I feel that mirroring is same as backing up).
Yesterday, Time Machine indicated the lastest back-up failed (for the HD called Terra LaCie). Now, when I go into Time Machine, the dialog box indicates the following message:
"Are you sure you want to erase the backup disk “Terra Lacie”? Erasing will destroy all information on the disk and can’t be undone.
The disk must be erased before it can be used for Time Machine backups because a disk you are backing up is case sensitive, but the backup disk is not."
When I open Time Machine to look at my external hard drives (I also have a third usb portable drive); two of the three drives indicate the following:
"reformat required; case insensitive disk".
The small, portable hard drive (that I'm also using) doesn't say it needs to be reformated (but my new Thunderbolt and my old usb HD both indicate the same message (above).
What should I do? I just spent days transferring my photographs from my iMac to my new Thunderbolt. Should I just not use Time Machine any longer and work from my Thunderbolt drive?
Am I to understand that my iMac suddenly become case sensitive? Sorry if this was too much information about my hard-ware set-up.
Any help someone can provide me would be greatly appreciated. I suppose I need to understand Time Machine and perhaps my Thunderbolt better.

Hi BDAqua,
Bravo, you helped me solve my problem.
The Case Sensitive Disk was the small portable hard drive that I was using termporarily.
I just disconnected it and I started TM machine and everything seems to be working just fine.
Thank you very much!!!!

HT201250 I have thousands of pictures on my Mac. If something happens to my Mac I don't want them lost. I do time machine back ups to an external hard drive once a week. Is this good enough for making sure my pictures don't ever get lost?

I have thousands of photos on my Mac. If something happens to my Mac obviously, I don't want to lose the photos. I do Time Machine back ups to an external hard drive once a week. Is this good enough to make sure my pictures don't get lost?

tgs6164 wrote:
I have thousands of photos on my Mac. If something happens to my Mac obviously, I don't want to lose the photos. I do Time Machine back ups to an external hard drive once a week. Is this good enough to make sure my pictures don't get lost?
Purchase a couple of these when they go on sale.
Start burning all the photos onto DVDs.
At least you'll have all your photos if your computer, time machine or any other backup you use goes bonkers.

How can I get Time Machine to back up an external hard drive (iPhotos) that is attached to airport extreme base station. Note: Time machine is usb to macbook pro and external drive with iphotos is usb to airport extreme base station. Help please. Thanks!

How can I get Time Machine to back up an external hard drive (iPhotos) that is attached to airport extreme base station. Note: Time machine is usb to macbook pro and external drive with iphotos is usb to airport extreme base station. Help please. Thanks!

Once you have the drive connected to your Mac, click System Preferences (gear icon) on the dock
Click Time Machine
Click Options
Be default, the hard drive will be Excluded from backups. Click the drive to highlight it, then click the "-" (minus) button at the bottom of the list to remove the drive from Excluded items.
The drive will be backed up on the next Time Machine pass
Everything above assumes that the hard drive has been formatted in Mac OS Extended (Journaled) as Time Machine will only backup drives in that format.

HT201250 Time machine back up using a external hard drive connected to the Airport extreme

How can I setup a time machine back up using a external hard drive connected to the Airport extreme? Even better for time managment purposes I want to use the Eithernet Thunderbolt connection for the first back up and then through the wifi there after for daily routine Time Machine back ups.

You can attach a hard drive, but Time Machine backups to a drive at the USB port at the AirPort Extreme are not supported by Apple, so it's not possible to say what your actual results might be.
If you decide to try this, it would be wise to have a secondary backup plan in place as well.
http://docs.info.apple.com/article.html?path=Mac/10.6/en/15139.html

Can Time Machine back up a second external hard drive that is attached via usb to a Time Capsule?

Can Time Machine back up a second external hard drive that is attached via usb to a Time Capsule?
I have a iMac with 10.7.4

I want to back up the data on the external Hard Drive that is attached to the Time Capsule to the Tim Capsule using Time Machine.
Thanks for the clarification. Unfortunately, that will not work. You will need to connect the drive directly to your Mac if you want Time Machine to backup the drive to the Time Capsule.

I am having trouble installing. downloaded Mavericks but it will not let me install to hard drive, says that is reserved for Time Machine. I have an external hard drive, but disconnected that before download.

I downloaded Mavericks but can't get past the install; it thinks my hard drive is reserved for Time Machine. I have an external hard drive but dis-connected that before download.
I have Time Machine turned off.

Check to see if you have a file name Backups.backupdb on the disk drive.
If the installer sees such a file it assumes that the disk drive is being used by Time Machine.
Allan

If i have Time Machine backed up on an external hard drive, do i just plug the drive into another macbook pro and all my stuff is in the new computer? also, does it matter if the new computer is running Lion when the backed up info came from Snow Leopard

If i have Time Machine backed up on an external hard drive, do i just plug the drive into another macbook pro and all my stuff is in the new computer? Also, does it matter if the new computer is running Lion when the backed up info came from Snow Leopard 10.6.8?

No and Yes
Don't use TM for this purpose, clone your drive to an external, plug the external into another MBP and reboot from it. Please note that booting a machine that came with Lion may not be possible from a drive with Snow Leopard.

Time Machine does not start after external hard drive is connected

Time Machine does not start after external hard drive is connected

These are the iCloud storage options: http://www.apple.com/icloud/includes/lightbox-storage.html
Also bear in mind that:
1. restoring data over icloud takes time
2. iCloud is not designed as a replacement to Time Machine.

Time Machine won't backup my external hard drive.

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