TIme Machine will not back up to External Hard Drive

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. I right click on my "Backup" drive and change the permissions to Read + Write but it just sets it back to "Custom". I'm guessing that the reinstallation changed my account information but I'm not sure how to fix this. My External HD shows in Disk Utility that it is still almost full of Time Machine backups but I have no way to access them or to continue to use Time Machine for future backups. Any help would be much appreciated. Thanks!

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.

Similar Messages

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.
Just enter the MyBookLive IP address as the URL.

Time machine will not backup to empty external hard drive after replacing Mac's internal hard drive and restoring

First - I live in a tiny fishing village in Belize, so getting support here is virtually non-existent. There is no one else in my village who even uses a Mac. Recently, my hard drive in my 2012 Macbook Pro 13" went bad (said it suffered a "shock"?) and I was traveling to Cozumel, Mexico, so had it replaced there. We used an external hard drive backup to restore the data to it's last time machine backup (October of 2014). Everything was working fine, until I returned home, added some pictures, and wanted to do a fresh backup. Now, time machine will start the backup, but gets about 113,000 of 181,000 done, and it locks up. I can do nothing - everything freezes, and I have to eventually power down the computer. I even tried deleting the old backup from the external hard drive, erasing it completely, and reformatting the external hard drive using disk utility. Still locking up. It is a 5 GB external hard drive, so space shouldn't be an issue, and it was backed up to the same external hard drive previously with no issues. I'm still running Mavericks, and don't want to try to upgrade to Yosemite until I can be sure I have a backup of my old data and pictures. I am a writer, and use that to make my meager living LOL
I'm stumped. I've looked through the files endlessly but can't find anything similar to my issue. Any suggestions? I know just enough to be dangerous, and don't want to lose everything we worked so hard to retrieve when my hard drive crashed last month.
Thanks!

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.
I'm sure it's my error somewhere, - I just don't know how or where

Time Machine will not backup to my external Hard Drive even though it works on another Mac

I have a WD My Book Studio Edition II that backs up perfectly fine on my iMac 2008 ,but when it comes to my Mac Pro 2001 it just comes up with a "Calculating size..." Message that goes on forever.

If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console 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 Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Enter the word "Starting" (without the quotes) in the String Matching text field. You should now see log messages with the words "Starting * backup," where * represents any of the words "automatic," "manual," or "standard." Note the timestamp of the last such message. Clear the text field and scroll back in the log to that time. Select the messages timestamped from then until the end of the backup, or the end of the log if that's not clear. Copy them (command-C) to the Clipboard. Paste (command-V) into a reply to this message.
If there are runs of repeated messages, post only one example of each. Don't post many repetitions of the same message.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Some personal information, such as the names of your files, may be included — anonymize before posting.

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.
Can you please share the steps? Plug in a HDD to McAir and run Time Machine? Is that it?
Thanks.

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 will not back up to time capsule

Time machine will not back up to my Time Capsule on my MacPro running SnowLeopard. Error message says it cannot access the backup file. I have reset the TC, and erased the drive and I get the same error on initial backup. I can see the volume and drag files to it, so the disk appears OK. What's going on here?

Depending on exactly what message you get, you might need #C17 in Time Machine - Troubleshooting
If not, please post the message (a screenshot would be fine).

My time machine will not back up and i get this message: /Volumes/Data/Kathy P's MacBook.sparsebundle" is already in use

my time machine will not back up and i get this message: /Volumes/Data/Kathy P’s MacBook.sparsebundle” is already in use....i have tried multiple fixes but still unable to back up

If you have tried the fixes in Pondini's Time Machine Troublshooting, specifically #C12 and nothing helps, then it is time to let one of the genius types at an Apple Store take a look.
http://pondini.org/TM/Troubleshooting.html
If you cannot take the Time Capsule to an Apple Store, contact Apple Support directly.
http://www.apple.com/support/contact/

My time machine will not back up. It says backup failed each time i try to back up. I tried switching it off but still nothing. It says "already in use" Please help!

My time machine will not back up. It says backup failed each time i try to back up. I tried switching it off but still nothing. It says "already in use" Please help!

The late James Pond left us these wonderful illustrated guides, including this one:
Time Machine - Troubleshooting
C12. "The Backup disk image ... sparsebundle ... is already in use."

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.

HT201250 I run time machine on my iMac using an external hard drive. I just bought a MacBook Pro and want to know if i can run time machine on it using my wireless network on to the iMac external hard drive

I run time machine on my iMac using an external hard drive. I just bought a MacBook Pro and want to know if i can run time machine on it using my wireless network on to the iMac external hard drive

How do I set up Time Machine to a shared drive on another Mac?

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

Time Machine will not backup Lacie 1TB Rugged (Biometric) drive

I have a Lacie 1TB Rugged Drive running Lacie Safe Manager (Biometric Login). I use this for my iPhoto libraries and Final Cut Pro media and would like this to be backed up by Time Machine.
Problem is that even when the Lacie drive is unlocked and available, and removed from the Time Machine (exclude these discs) option, it still will not back up this external drive?
It seems like the only way to back stuff up is to have it on the main OS X volume? Is this correct?
Also....the Lacie drive which has been formatted Mac Journaled does not display with a firewire icon (despite the transfer speeds being nice n fast)?
Just shows up as a white disc icon?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, or by a peripheral device.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Time machine won't let me include external hard drive in backup

My memory was full on our computer so I got an external hard drive to move over our iphoto library to (I have a large iphoto library ~22,000 pictures that continues to grow). For discussion purposes I'll call this - IPhoto HD.
I also have another external hard drive that we've had for quite some time that I use as our time machine backups. (Time Machine HD).
I copied over my iphoto library to the new external HD (IPhoto HD).
I then went into my time machine under settings and wanted to make sure that the IPhoto HD was being backed up on the Time Machine HD. (after I got verification of this I was going to delete the iphoto library from our computer to free up some space).
When I go into time machine under options - the Iphoto HD is greyed out - and it won't allow me to delete it from the "do not back up" list. (however the Time Machine HD is not greyed out - I could delete it if I wanted to).
I tried searching for the answer in the forums and couldn't figure it out. I did verify that the format of the IPhoto HD is Mac OS Extended (Journaled).
I should note that both external Hard drives are WD My Book for Mac 2TB. Not sure if that makes a difference.
Thanks in advance for your assistance.

Sorry, but Time Machine does not back up reliably, if at all, to most network drives, except Time Capsules or a shared drive on another Mac running Leopard or Snow Leopard on the same local network.
Here's the criteria they must meet: Disks that can be used with Time Machine. And be careful here: just because some 3rd-party hardware claims to support Time Machine doesn't necessarily mean that Apple supports it, or that it will work in all circumstances.
The messages indicate that Time Machine found the volume, but couldn't write to it. That may be some sort of sharing or permissions error, or it may be that the device doesn't support all the things Time Machine requires, per the link above.
Are you sure that it's compatible with Snow Leopard? Some NAS devices that worked with Leopard didn't seem to work with Snow Leopard, at least when it first came out.
You may need to check with LaCie or the place you got it.

Time machine with 10.5 Server (+thrashing external hard drive)

I run MacOS server to provide support for a small group of collaborators -- mainly via SVN and Wikis, as well as a static website that is publicly accessible, all running off a Mac Mini.
I want to use Time Machine to keep a backup, so I can quickly get up and running if anything goes wrong.
However, when Time Machine is switched on, it seems to spend an inordinate amount of time thrashing the external hard drive (a 1GB in a separate enclosure, connected via Firewire). Looking at top shows du using ~70% of one of the cores on the Mini, and the thrashing lasts for 20 or 30 minutes at a time, even though very little has changed on the server (the wikis get updated at most once a day, and the website gets visit a 10s of times in 24 hours).
Turning off time machine silences du (and the somewhat noisy hard drive)
Any suggestions (or tips for using Time Machine to back up a server in general -- once I get this sorted I plan to test that I can actually recover the server from the backup and install on a new machine)

Turns out that the thrashing was due to Sharepoint; but it was only an issue when time machine was running (so far as I can see). Am still checking that the problem does not come back, but will mark this as solved.

TIme Machine will not back up to External Hard Drive

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