Time machine doesn't recognize external hard drive
Recently I went to the apple store to get help to switch from Mavericks to Mountain Lion (I had some problems with Mavericks). They used time machine to bring back my applications (from my external hard drive, LaCie) on the Mountain Liion software. They said my time machine/external hard drive should work the same when I got home. Now, when I go to back up my computer, time machine doesn't recognize that I've backed up my files before. In the past, when time machine was working, every time I plugged in my hard drive the icon for it would turn blue, time machine recognized it, and it would back up my files. Now, the icon for the hard drive shows up, but time machine doesn't recognize it.
Some other things:
- when I open my external hard drive on finder, it shows all of my previous back ups
- I used disk utility to check my hard drive and macintosh HD - both are OK
How can I use time machine to continue backing up files? Or am I going to have to partition or erase the hard drive and start a new back up?
Thank you in advance
nevermind! time machine suddenly recognized the disk after half an hour. sorry, I don't know how to delete this post!
Similar Messages
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HT203177 Time machine doesn't recognize my hard drive archive
I have time machine archive on a hard drive (not time capsule). It recently stopped backing up. On checking, time machine recognizes the hard drive (in preferences it is listed as the back up drive.) The files appear to be present on looking into the drive, but Time Machine doesn't recognize that there are backup files there, it wants to complete another full backup. Meaning - it says for latest backup: "none".
I am afraid if I do another full backup, I will lose the ability to access the older backups.
When I try to access older files through time machine, it predictably cannot find them.
How do I tell Time Machine that the files on that hard drive are the backup files?Update:
1) Right click on TM icon - Menu choice "Browse other TM disks" allows me to see the data - i.e. it is a valid TM archive, not corrupted.
2) Looking at TM preferences immediately after showed the proper disk was targeted, but still Latest backup: None.
3) Shut down, anomalous shut down -required power button hit. (AHH - the problem??)
4) restart using command - R works - i.e recognizes the disk and emergency recovery system software
5) Restart - Still shows latest backup: None
6) trying to access data through standard TM startup shows data now.
7) go back to preferences - still no backup shown.
Aside - I can't recall what the purple vs white dates on right side of the screen signify, and can't find it in the documentation right now. Anybody know? -
Time machine doesn't see external hard drive on network
I have a pair of external hard drives connected to my iMac, which is connected to my 2WIRE modem/router via Ethernet. I'm using one of them as a Time Machine drive. For the past couple years, I've been backing up the laptops in the house to that Time Machine drive without fail.
Now none of the laptops (a MacBook and an iBook) won't see either external drive connected to the iMac, even though the iMac has file sharing turned on (as it always has) and both laptops are connected to the iMac via the Finder. Both laptops can see the iMac and the external drives connected to it via the Finder, but in Time Machine, when I try to select my Time Machine drive, nothing appears in the window.
I was having a problem with the Time Machine drive and had to wipe and reformat it, but I don't understand why Time Machine won't see the other external drive either, even if there is a problem with the TM drive. I recall Time Machine picking up all available hard drives as possible backup destinations, as long as they're also seen in the Finder.
The iMac has been having some OS X issues. The Finder will crash sometimes, and I have no choice but to hold down the power button to shut it down and then start it up. When it starts, it takes longer than it normally does, I assume because it's checking and/or fixing some things. However, those issues have been going on for a long time (I think I need to reinstall OS X in it, since Disk Utility finds nothing wrong; also, the hard drive in the iMac crashed about 2 months ago and I put a new one in; I then restored the TM backup to it, and the OS X issues have persisted, which tells me it's software-related, not the drive).
Also, the iMac backs up to the Time Machine drive just fine. Of course, the TM drive is connected to it locally, whereas the laptops have to get to that drive via wireless file sharing.
I did try plugging one of the external hard drives on the iMac into my MacBook, and Time Machine saw it immediately, so my guess is the issue must lie with my router and/or the iMac, but I don't know what to check next. I've restarted the iMac, I've restarted the laptops, I've turned TM on and off on the laptops, and I've turned file sharing on and off on the iMac; none of those things reestablished the connection.
I suppose I could just go with external hard drives for the laptops, but my wife moves her iBook all over the house, so I know hers won't get backed up regularly. That was the nice thing about the system I had in place, which I realize wasn't as elegant as a Time Capsule.
Any advice is appreciated. Thanks.That should say "Now none of the laptops (a MacBook and an iBook) will see either external drive..." I hate typos.
Anyway, after rereading my post, I'm starting to think I just need to reinstall OS X on the iMac, given the other issues it's experiencing. Any advice for doing that would be appreciated, if that's indeed the solution. Thanks. -
Time Machine Won't Recognize External Hard Drive
Hi there,
My father has a 2009 iMac running Mac OS X 10.8.3. Recently, Time Machine stopped recognizing his external Maxtor OneTouch backup hard drive.
I've tried the whole litany of ideas and tips listed in this forum and other websites:
Rebooting both the desktop and the external hard drive
Changing USB ports
Checking Disk Utility (won't even display)
Can you offer any solutions? He hasn't had an issue before, so it seems to be an isolated incident. This desktop is for his business, so it's very important for the files to be backed up.
Thanks.
Update: After submitting this, I received a dialogue box that said the computer cannot read the external hard drive.If the drive has more than one interface (USB, FireWire, Thunderbolt, eSATA), try one of the other interfaces.
Check that the data cable is securely inserted at both ends.
Try a different cable.
If you're connecting the drive through a hub, connect it directly to a built-in port on the Mac.
If you're connecting it directly, try a different port.
Disconnect all other devices on the bus, or as many as possible.
Test the drive with another Mac. Test another drive with this Mac.
If the drive is bus-powered, but has an AC adapter, connect the adapter.
Boot into Recovery and launch Disk Utility. Is the drive recognized?
Start up in Safe Mode and test.
Reset the System Management Controller
If the drive doesn't work under any of the above conditions, and if another drive does work with the same Mac, then the drive has failed. You may be able to salvage the mechanism by removing it from the enclosure and installing it in another one, or in a drive dock. -
Time machine doesn't recognize my hard drive
I have a MBP (early 2011) 2.3 GHz Intel Core i7 with 8 GB 1333 MHz DDR3.
I have been running Lion and backing up using time machine to an external HD. Took machine to Apple to check on a problem which I presumed to be a RAM issue. They ran diagnostics and determined that one of my RAM chips needed to be replace. Also suggested that I upgrade to Mavericks. I agreed to let them do the install, making sure to do a time machine backup just before leaving the machine. They wiped the HD and did a clean install of Mavericks v 10.9.4.
The migration from TM did not work. On phone for hours with Apple while they walked me through manually reinstalling everything from TM to reformatted HD. (what a pain!). Now, I want to back up the HD using the same external HD (plenty of space still available). Plugged in external HD via USB, as always. Went to system preferences - turned on TM. My internal HD is not there. Only finds the external drive.
How do I resolve this problem?John Galt wrote:
... Are you unable to select the external HD as a backup device?
pres92 wrote:
that's the problem -- my hard drive ("startup disk) is not listed, so I can't select it.
The reason is that the startup volume is not a valid selection for its own Time Machine backup.
The only drive listed is the Time Machine external drive. Obviously, I don't want to back up the time machine drive.
By default, a Time Machine backup volume is excluded from being backed up.
The appearance you describe is correct, otherwise I'm completely misunderstanding your problem. -
i got a macbook pro 2008 and can not back up using time machine. it eject my external hard drive everytime. does anybody has a fix???
Does your external hard drive have it's own power supply? It should.
Is your external hard drive formatted with the NTFS file system? It won't work.
It needs to be formatted either with Mac OS Extended or FAT32.
(There are drivers available to add NTFS support to OS X but their quality is unknown, especially the "free" ones.) -
QUESTION.
Hallo , my question is ;whenever I delete a photo and restore it through Time machine and Western digital external hard drive , I am able to restore the photo but not the titles and descriptions . Western Digital inform me that it isn't their external hard drive problem and suggest that it is an Apple software problem ?
I am using a Macbook 4.1 , with Mac OSX 10.5.8 . I photo 7.1.5 , last modifie4d 01/05/2010 -universal . Should I be upgrading Iphoto ?
I hope that someone is able to help in this matter , as i have to restore 12000 photos !
Thanking you in anticipation.
Alan from WigtonHallo Kieth ,
I am not quite ready to restore the full iphoto library , as I have days of work re - imputting titles,descriptions and enhancement . I hope that your suggestion works , as I use my Macbook basically to work with digital photography. Through time , I will need to delete my library to recover more disc space and I would hate to have to spend more time re - imputting titles and descriptions all over again .
Thanks for your interest and advice.
regards - Alan -
HT201250 How can I migrate a Time Machine backup from an external hard drive to a new TimeCapsuls?
I just got a 2TB Time Capsule. I want to migrate my time machine backups on an external hard drive to the new Time Capsule. I have about 430Gb of files to back up; I don't want to wait 7-8 days for the backup, unless I have to. I am using OS 10.7.5 (forget which cat that is). I have mounted the TC drive as 10.0.1.1; I tried to drag and drop from old to "data" on TC, but I get the error "The volume is the wrong format for a backup." Any ideas how I can move my old files to the new, and bypass creating a brand new backup file?
Thanks.Rather than do that, which means starting over from scratch, losing all your edits, organisation and so on, why not simply use iPhoto Library Manager to revert the Library to the older version? Easier, less destructive.
The instructions on that are here
If you really want to start over: you can access the Originals folder simply by going to your Pictures Folder and finding the iPhoto Library there. Right (or Control-) Click on the icon and select 'Show Package Contents'. A finder window will open with the Library exposed. -
Re Time Machine
I have an external hard drive with files I backed up manually over the past 2 years 1TB of memory.
I am finally taking the leap to use Time machine to back everything.
will I have to reformat that drive, thus wiping my previous back ups?
can I split it the drive in two partitions?
Also
as I have two separate Macbook Pro's- one older than the other.
OSX 10.68
the other is
OSX 10.75
can I back them up separately?
or even synch and merge files and folders etc? between the two?You CAN use a drive with files already on it to store Time Machine backups. But long term, that is not recommended. You do not need to reformat or re-partition the drive to do this. Once Time Machine Backups are established, you could remove the old files.
But do not delete Time Machines files with the Finder -- that can cause it to lose its place and lose everything.
With the cost of backup drives under US$100, it might be a better idea in the long run to get another drive. Best results from Time Machine is a drive about 3 times larger than the drive(s) you are backing up. -
I am running my first backup on Time Machine using a Seagate external hard drive with a thunderbolt adapter and cable. I have a MacBook Pro 2011. It is backing up 11GB, and is telling me it will take approx two days. Is this normal?
Download the supplemental fix to 10.7.5
http://support.apple.com/kb/DL1599 -
I had to reformat my OSX 10.5.8 and I can't restore my emails from my time machine backup from an external hard drive - only the latest (post backup) time machine back ups are available to restore. Please can any help? I can find the mail folder in my libraries, but the Restore Button is grayed out
OSX treats the reformatted drive as a different one; it's the same as replacing it, and the old one is no longer connected.
See #E3 in Time Machine - Troubleshooting to see and restore from the "old" drive.
And, you may not want to restore via the Finder; see the blue box in #15 of Time Machine - Frequently Asked Questions. -
Is there any way to create a time machine backup to an external hard drive with content already on it? I have a hard drive that i have used for pictures but when i try to run a backup it says i need to start from a blank drive. Can i get around it?
It would be much better if you had separate drives for the pictures and Time Machine backups.....but, if you want to use the same drive for both purposes, temporarily move the folder with the pictures to another location for safe storage.
Run the Time Machine backup on the hard drive and verify that everything is working correctly. Time Machine will format the disk for you in Mac OS Extended (Journaled) as part of the backup process.
Then move the folder with the pictures back to the hard drive with the Time Machine backups.
When you have tested to make sure that everything is working again, then and only then should you delete the folder with pictures from the temporary storage area.
Again....it would be much better to keep Time Machine backups on a drive just for that purpose, and other data on another drive for that purpose. This is clearly one of those times when the fact that you can do something does not mean to imply that you should do it. -
Time Machine and backing up external hard drives
Time machine will not back external hard drives I have connected to my Mac Pro. It works fine with the 3 hard drives mounted in the computer. Is this the way Time Machine is intended to work or am I doing something wrong? Thanks in advance for your assistance.
According to Disk Utility, GUID and AFP are both ok for a non-bootable drive with either CPU. The difference is when you want to make a volume bootable.
Since TM volumes are not bootable, it shouldn't matter UNLESS you have some other bootable system installed on the drive.
Right now, the drive on my Intel iMac is partitioned AFP and the one on the PPC powerbook is GUID. They both appear to be behaving themselves. The iMac has had one instance (since the last partition job) of a massive backup which occurred right after I changed the exclude list and the PPC has had no massive backups (other than the initial one). On that one, I built the exclude list BEFORE the initial backup.
- gws -
I threw out 24 time machine backups from an external hard drive into my IMac desktop trash and now I can't empty my trash.
Since you didn't mention what type of error message you were seeing, I'm going to guess on what is happening.
I'm guessing that since you threw away Time Machine backups, that Time Machine is probably active on your Mac. There is a chance then that the files you tossed are marked as in use. You can't delete files that are in use.
Try turning Time Machine off, then restart your Mac. Then try deleting them again.
Once done, turn Time Machine back on.
Tom -
Will Time Machine Back up an External Hard Drive Attached to my Mac Pro?
Apple TV is GREAT, but it quickly filled up my hard drive. My thought is to take my folder that contains all of my personal files and put it on an 1TB external hard drive. I'd then "point" iTunes to where this new folder is. First, is that the right approach? Will that mess anything else up? Second, can I have Time Machine then back this external hard drive up? So, I'd like to have Time Machine back up my Mac HD and the external HD. If Time Machine won't do this, is there a good back up program for Macs that is very turnkey?
Thanks in advance!!!GregT wrote:
Apple TV is GREAT, but it quickly filled up my hard drive. My thought is to take my folder that contains all of my personal files and put it on an 1TB external hard drive. I'd then "point" iTunes to where this new folder is. First, is that the right approach? Will that mess anything else up? Second, can I have Time Machine then back this external hard drive up?
If the drive is formatted +Mac OS Extended,+ yes. While it's connected, go to TM Preferences > Options. If it's listed in the exclusion box, just select it and click the minus sign at the bottom.
If it's listed in gray, however, it's either formatted wrong or corrupted, and you can't remove the exclusion.
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