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?

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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 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.

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 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!!!!

How Can I Migrate My Time Machine Backups To A New External Hard Drive?

I have a external hard drive that has 500 GBs left, but I want to buy a larger drive.

ivan wrote:
How Can I Migrate My Time Machine Backups To A New External Hard Drive?
I have a external hard drive that has 500 GBs left, but I want to buy a larger drive.
Hi iVain
Fire up *Disk Utility*, click the Restore tab, then drag your old and new TM drives into the Source and Destination fields. Click Restore, and a complete copy of your old TM files will be made on the new drive. Go to TM preferences and select the new drive, and it will continue backing up just as it left off.
Hope this answers your question. See:
http://discussions.apple.com/thread.jspa?threadID=2595485&tstart=0

How do I use time machine to backup to an external hard drive plugged into my airport extreme

How do I use time machine to backup to an external hard drive plugged into my airport extreme? I used to be able to but now time machine will not recognize my hard drive to select as a backup when plugged into my airport extreme. I'm not sure what happened or changed. Any help is greatly appreciated. Thanks

First thing to do is go to the Pondini tips page, then follow the link to his full TM site for all the details.

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

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 will not back up external photo drive

Time Machine will not back up external photo drive, slightly different format, one case sensitive the other not. How do I resolve. Bought new external drive same format as TM in the hope that I could copy the files from photo drive but that will not copy all files as it is saying file already there. Again the case sensitive issue...
Paranoid about losing 1Tb of photos all cataloged in LR5
Possible solutions I have looked at but not yet tried.
Use the new 2Tb drive to make a new TM backup then reformat the old 4Tb drive the same as Photo drive.
Then do a complete backup of all files and photodrive to TM.
A lot of work, USB 2, so if any one has a simpler answer I would love to hear.
Roger

crash888 wrote:
I reinstalled Snow Leopard on my Mac Mini after having some issues. After reinstallation, Time Machine would no longer backup to my External HD because it will not allow me to change permissions.
What message did you get? You should never change permissions (or anything else) on a Time Machine drive -- TM does that for you.
Start with #C2 in the Time Machine - Troubleshooting *User Tip* at the top of this forum.
It will show you how to locate the message(s) that describe the problem, then help you fix it.
If that doesn't help, post back with details, including all the messages, your setup (especially the destination for the backups), what you've done, and the results.

Time Machine won't back up external drive to Time Capsule

I recently got a Time Capsule, and successfully set it up to back up my iMac's primary drive, but for some reason Time Machine won't back up my external drive to the Time Capsule.
I removed the external drive from the exclusion list in System Preferences > Time Machine > Options, and from what I've read this should be sufficient to make Time Machine back up the drive.
The external drive is connected to my iMac via Thunderbolt > Thunderbolt-to-Firewire adaptor > Firewire 800 input, and the Time Capsule is connected via Ethernet to my LAN.
Since I'm using Ethernet, I've disabled Wi-Fi on the Time Capusule by going to AirPort Utility > My Time Capsule > Edit > Wireless > Network Mode > Off.
The reason I believe the external drive is not being backed up is because when I click the Time Machine icon in the upper-right status bar and choose "Enter Time Machine", none of the folders on external drive show any older versions.
Furthermore, when I click Finder > Time Machine Backups > Backups.backupdb, I can see only one sub-folder which has the name of my iMac's primary drive. I can't see any equivalent folder for my external drive.
Any idea what I'm doing wrong?

I don't see anything you have done wrong.. perhaps it does backup in a different way.
Load the widget.. A1 here... http://pondini.org/TM/Troubleshooting.html
That will allow you to track the log of TM to see what it is doing.
I would also try rebooting the computer.. exclude the drive again.. reboot.. and remove the exclusion.
You should be able to check the actual settings of TM in plist file.
And you can do a full reset of TM as well.. See A4. Check what is in the file. Pondini lists the location for you.
Nothing surprises me with Mountain Lion ...!!

Time Machine not moving data to external hard drive.

Time Machine is excluding my external hard drive from backups. All formatting and connections seem to be correct. When I try Time Machine Preferences, my external hard drive icon appears on the "exclude" list in the options box.I can't highlight it to remove from list. So, Time Machine is not moving any data to the external drive except for a copy of the internal hard drive.
Thanks in advance,
Lenny

My guess is that your external drive uses formatting that Time Machine will not back up. Click on the drive in the finder and type Command "i" or File > Get Info to see how your drive is formatted. If it's not some flavor of MacOS Extended, Time Machine won't back up your external. If the drive is formatted correctly use the first Aid tab in Disk Utility to repair your external. Repeat the repair process until Disk Utility reports no errors.
If your drive uses FAT formatting and you need to use it to share files with a PC use some sort of PC software to back up the drive.

Time Machine backup? pictures and external hard drive

I know this question has been asked before but I just wanted to make sure of something. Does a basic Time Machine backup backup all photos? And also a real basic question-- Is a Apple Time Capsule the same as a external hard drive?

You can save the pictures in Time Machine backup.. that is not a problem and what the TC is designed for.
You cannot off load the pictures from the internal disk of the computer and use the Time Capsule as the drive for a running library.. that is when it will get corrupted.. if you need more space for a library use External drive that plugs in by USB or FW or Thunderbolt. And it must be formatted standard Mac OS extend journaled.. then Time Machine can backup the drive to the Time Capsule.
I should also use the language more carefully.. the TC is fine for files even of pictures.. but it is unsuitable for an iphoto library or aperture library. I am always assuming on a Mac when people talk about pictures then they mean a library.. but if you save raw pictures from the camera onto a TC directly that is fine. The only issue that then arises is no automated backups.. TC is not a NAS in the normal sense of the word.. Every NAS has a built automated backup.. TC does not. You also cannot backup files on the TC using TM.. it was designed as a Target for Time Machine backups Not as a source. There are other backup products that will work.. but then you will need to figure out where to back up file to.. and the worst possible place is the USB on the TC.

HT201514 Trying to back up Time Machine to My Passport Air external hard drive, which is supposed to be compatible with my iMac and Mountain Lion, but get the message: Unable to complete backup. An error occurred while creating the backup folder. Help!

Hello, I've just bought a Mac compatible Passport Air external hard drive, which is supposed to be compatible with the OS I am using (Mountain Lion) but I keep getting an error message saying Unable to complete backup. An error occurred while creting the backup folder. I've tried all the help suggestions, but nothing with this actual message comes up - it appears to be partititioned correctly etc, so don't know what I'm doing wrong - any help would be greatly appreciated thank you.

Were you not plugged in via USB to begin with?
I would recommend performing some resets just to be on the safe side. Unplug the external HD, and try these steps:
http://support.apple.com/kb/HT3964
http://support.apple.com/kb/HT1379

Time Machine incomplete backup on new External Hard Drive

I have a LaCie 2TB firewire external hard drive I bought 2 years ago. I made 3 partitions, one called "Time Machine" for TM backups of my iMac HD, one called "Video" for video files, and one called "HD2" that I used to install new programs and store edited photos and img files. I ran TM onto this HD for the last 2 yrs with no problems. I recently decided that I needed to have a backup of my iMac HD --- AND the 2 partitions (Video and HD2) on my LaCie. So I bought a Seagate 2TB external USB HD that I planned to use ONLY for Time Machine.
So I hooked it up and formatted it (no partitions), then went to TM options and selected the new Seagate Hard Drive to backup to, and in the options I excluded the Seagate (by default) and the Time Machine partition on my LaCie. Nothing else was excluded. In other words, I wanted to backup my entire iMac HD, and my Lacie Video and HD2 partitions.
My internal iMac HD has 116 GB used, my Lacie Video partition has 355 GB used, and my Lacie HD2 partition has 175 GB used. So I was expecting the Seagate to backup 646 GB.
When my Time Machine backup started at 1 AM, I was happy to see that the status box showed "Backing up 1 GB of 646 GB." When I woke up at 8 AM, I was happy to see that the status box showed
"Backing up 536 GB of 646 GB."
But it stayed stuck on 536 GB until 12 Noon, then started slowly working again. By 7 PM, the status showed "Backing up 623 GB of 646 GB." Then at 8 PM, the status box disappeared and it seemed like everything was backed up. But my Seagate HD shows only 629 GB of used space. So I decided to check the backup in Finder to see what went wrong.
In the Seagate backups folder, I have three folders - one named "Macintosh HD" which shows 112 GB on disk, one named "Video" with 341 GB on disk, and one named "HD2" with 175 GB on disk.
So it appears that my iMac HD was only backed up 112 GB out of 116GB, my Video partition was only backed up 341 GB out of 355 GB, but my HD2 partition backed up the entire 175 GB out of 175 GB.
So my question is - is this normal, or is my backup really missing 4 GB of files from my iMac hard drive and 14 GB of files from my video partition? I started to look at them file by file to see if they matched, but there are so many files, so I thought I would ask in case any of you might have heard of this before. If your answer is that my backups are corrupt or incomplete, should I reformat the Seagate and start over?
Also, is it safe for me to manually delete all the files in my time Machine partition on my LaCie hard drive, since I won't be using that anymore for Time Machine backups? Or is there a process I must follow to delete those older backups?
Thanks for reading this far and for any advice you can shoot my way.

Thank you for your well thought out response. It was really helpful by showing me where to look at things more closely.
Time Machine automatically excludes some things that aren't necessary for a restore, such as system work files, most caches and logs, and trash.
This is good to know. Although I didn't have anything in the trash, I have no idea how much is in the various caches and logs. I'd be surprised if they totaled 4GB, though. I'm still worried about this backup, as explained below after doing a Console log check.
If any files were open, they may not have been backed-up (a partial file wouldn't be of much use). I don't know of any special exclusions for video files or apps, but there may be some. You might want to try the Terminal command in the yellow box of #11.
I didn't have anything else running except TM, so no files were open. I checked the exclusions in the yellow box #11, the Terminal Command, and /System/Library/CoreServices/backupd.bundle/Contents/Resources/StdExclusions.pl ist, but nothing seemed to point to the video files I have saved. So I'm still at a loss with this part of the backup.
You might want to look at the log of that backup
I looked at the log - thank you for the link on how to see it - but the entries show that the size of the backup was even less than I thought - It seems I am actually missing 0.2 GB from the HD2 partition, 6 GB from the iMac HD, and 14.4 GB from the Video partition. And since it shows the exclusion amounts, I'm really at a loss for the iMac HD now. Here's what the Console listed for this backup:
Aug 29 00:55:54 paul-imac-5 /System/Library/CoreServices/backupd[567]: Backup content size: 174.7 GB excluded items size: 0 bytes for volume HD2
Aug 29 00:55:54 paul-imac-5 /System/Library/CoreServices/backupd[567]: Backup content size: 355.7 GB excluded items size: 0 bytes for volume Video
Aug 29 00:55:54 paul-imac-5 /System/Library/CoreServices/backupd[567]: Backup content size: 116.3 GB excluded items size: 30.5 MB for volume Macintosh HD
Aug 29 00:55:54 paul-imac-5 /System/Library/CoreServices/backupd[567]: No pre-backup thinning needed: 776.02 GB requested (including padding), 1.82 TB available
Aug 29 00:55:54 paul-imac-5 /System/Library/CoreServices/backupd[567]: Waiting for index to be ready (909 > 0)
Aug 29 02:37:30 paul-imac-5 /System/Library/CoreServices/backupd[567]: Copied 3275 files (174.5 GB) from volume HD2.
Aug 29 05:49:40 paul-imac-5 /System/Library/CoreServices/backupd[567]: Copied 5412 files (515.9 GB) from volume Video.
Aug 29 19:18:46 paul-imac-5 /System/Library/CoreServices/backupd[567]: Copied 146976 files (626.2 GB) from volume Macintosh HD.
Is it possible to see how many files are in each drive that I was backing up? If I could match the file count, it might give me a better idea. I used Finder, but it only gives me the GB Capacity, Used and Free. For example, if I could see if the LaCie Video partition has exactly 5412 files (or 2137, if the file count above is a running total), I will believe that all the files backed up but may have been truncated. If the partition shows more than 5412 files, then I'll know that not all files were backed up. So at least I can start looking manually.
It will be much faster and easier to erase the partition with Disk Utility.
Thank you for this advice. This should save lots of time. I won't erase my other partitions when I do this, right? Also, will it leave a blank partition there so I regain my space?
I'm really bummed out by this backup. I haven't used my iMac for anything except Safari since this happened, because I do not want to start working again until I know that I have a safe backup, and I don't want to make any new files until I can resolve this. I thought of just reformatting the Seagate and starting over, but I have a feeling it may do the same thing. So at this point, I don't know if the Seagate is faulty, if the TM is not working properly, if I am making a dumb user error, or if this is perfectly normal. The worst thing that could happen is that my iMac HD or Lacie HD fails and I try to restore from my Seagate TM backup, only to find out that my TM backup is incomplete or corrupt.
So I really do appreciate your help and any additional insight you or anyone else might have. Thanks.

Time machine won't back up external hard drive

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