I connected my external hard drive that was previously on my pc and everything read fine. I later went on it asked to format and won't read at all on either computer

Drive Preparation
1. If you are preparing an external or a non-startup drive, then open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

Similar Messages

HT1151 I have my iTunes library on an external hard drive that was connected to a PC, now I want to connect to my new iMac and load the iTunes library onto that computer, can I do that?

I have my iTunes library on an external hard drive that was connected to a PC, now I would like to connect that hard drive my new iMac and load the iTunes library onto that computer, can I do that? Looking for a solution that keeps me from re-ripping my CD collection.

Here are the official Apple Support instructions:
http://support.apple.com/kb/HT4527
Ciao.

I have an external hard drive that was formatted by a PC and has files and directories etc. I want to format it and use it on my IMAC for backup but I can't seem to write to it nor can I delete current content. How do I initialize it for use with the MAC?

I have an external hard drive that was formatted by a PC and has files and directories copied to it etc. I want to use it on my IMAC for backup. I see it on my my IMAC . I can open files etc. But I can't seem to write to it nor can I delete current content. I don't care if I lose current content. How do I initialize it for use with the MAC?

You can't write to it because it's formatted as NTFS which OS X will read but not write to. If you want to continue using the drive with both a PC and OS X you will need to download and install NTFS-3G so you can then write to it from your Mac. You can get NTFS-3G at:
http://www.macupdate.com/app/mac/24481/ntfs-3g
If you want to use the drive exclusively with your Mac then move the data off it and reformat it in Disk Utility (Applications - Utilities - Disk Utilities) as Mac OS Extended (Journaled.)

How do i recover data from an external hard drive that was accidentally deleted? After I verified the drive, a message appeared that said my drive needed to be repaired. When I tried to access the drive again, the 700 Gigs of music is gone!

How do i recover data from an external hard drive that was accidentally deleted? After I verified the drive, a message appeared that said my drive needed to be repaired. When I tried to access the drive again, the 700 Gigs of music is gone!

Stop using the drive immediately, un plug it.
Buy a copy of ProSoft DataRescue 4 and use it to search for deleted files.

HT201250 Is there a possibility to recover erased files from an external hard drive that was reformatted by the Time Machine?

Is there a possibility to recover erased files from an external hard drive that was reformatted by the Time Machine?

Basics of File Recovery
Files in Trash
If you simply put files in the Trash you can restore them by opening the Trash (left-click on the Trash icon) and drag the files from the Trash to your Desktop or other desired location. OS X also provides a short-cut to undo the last item moved to the Trash -press COMMAND-Z.
If you empty the Trash the files are gone. If a program does an immediate delete rather than moving files to the Trash, then the files are gone. Recovery is possible but you must not allow any additional writes to the hard drive - shut it down. When files are deleted only the directory entries, not the files themselves, is modified. The space occupied by the files has been returned to the system as available for storage, but the files are still on the drive. Writing to the drive will then eventually overwrite the space once occupied by the deleted files in which case the files are lost permanently. Also if you save a file over an existing file of the same name, then the old file is overwritten and cannot be recovered.
General File Recovery
If you stop using the drive it's possible to recover deleted files that have not been overwritten by using recovery software such as Data Rescue II, File Salvage or TechTool Pro. Each of the preceding come on bootable CDs to enable usage without risk of writing more data to the hard drive. Two free alternatives are Disk Drill and TestDisk. Look for them and demos at MacUpdate or CNET Downloads.
The longer the hard drive remains in use and data are written to it, the greater the risk your deleted files will be overwritten.
Also visit The XLab FAQs and read the FAQ on Data Recovery.

Recover data from external hard drive that was Windows format and connected on a Macbook Pro. Did I lose everything? What happened?

Hi there this is my first question here!
I connected my external hard drive originally formatted on PC on my new Macbook. The first time I connected it I could see all my files but today I connected it and after I couldn't see any file nor even on my pc appears as NO NAME with a different name and nothing on it. I think was reformatted, any help to recover all my data?
It's really important stuff for me

If the Apple Store couldn't get files off of the drive, it is unlikely that you will be able to. If you have backups, those would be the best way to go. You could also try booting up the computer and holding down T to boot into Target Disk Mode. Plug the broken computer into another one with FireWire and see if it works to recover data from external hard drive. If you can see it, try booting up the broken computer while holding down Option. Choose Recovery HD from the menu, then choose to Reinstall OS X.
It is unlikely that this will work, because I'm pretty sure that the Apple Store would have tried this. You could try using expensive software to get files off the drive, but it would be risky and the results might not be any good.
https://discussions.apple.com/docs/DOC-4273

Unlocking external hard drive that was locked with time machine

I use a MBP Retina (Mid 2012) with OSX 10.9.4. I left the MBP at Apple for repair and they changed the mother card and reformatted my HD (SSD). Since I had a backup on a WD My Passport external drive I was not too worried to restore. I had clicked the option "password protected" on TM and therefore the external HD was password protected. I also copied pasted many files on the same external hard drive, in case TM would fail one day to operate I thought that I would still have my files ...
But I was very surprised that when I plugged in my external HD into my MBP it didn't recognize it at all. The external HD did not appear on the screen anymore. Nor in Finder. It appeared in Disk Utility but it could not be mounted. Basically it was impossible to access my data. After a while and talking with Apple Support on the phone we could reach a point where a window appeared asking me the password for the access to the HD. Unfortunately it didn't work. The . password was not recognized. Even though we had selected the right country with the icon upper right on the screen to make sure that we used the correct keyboard.
So finally I reinstalled completely the OSX (coming rom Lion all the way to the last OSX) on the MBP and finally I could restore it with my TM. I spent three days on this since it only worked with one OSX - don't remember honestly which one - and not the last one. Don't know why.
Anyway.
Today I have my MPB working but I miss all the files that are still on my external HD because I cannot access to it anymore. As I said the recovery happened all of a sudden with TM with a former OSX and not the 10.9.4. With this current OSX my HD does not appear on the desktop nor on finder. Nothing. It is locked by TM and I cannot even key in the password to unlock it. Useless to say that I have the password.
Any idea how to sort this out please ? Thanks

This might work. Courtesty of V.K.:
run the following terminal commands (copy and paste, please)
sudo chflags 0 /volumes/*
sudo chmod a+rx /volumes/*
you'll have to enter your admin password (which you won't see). that's normal. this should unlock your drives.

So, I have an external hard drive that was connected to my mac not able to access.

Under Disk Utility I was able to see it how ever I was unable to access it. So I made a partition thinking that might help. However I think it erased that the disk? Can I recover or undo? or remove the partition? what can I do to get the information from it?? Please help!

You have erased your drive, if this data is important stop using the drive immediately and contact a data rescue company, you may also try some of the data recovery software available, I have no recommendations for that stuff (I backup so don't have a need for recovery)

I have a 750 GB SS Hard Drive that was in my Macbook pro 15", i am trying to install it into my new Macbook 13" and when i power it, the apple sign comes on but stays on that screen. Can anyone tell me what Steps i missed.

I need help trying to get my Macbook Pro 13 to bootup.

The software that comes from the factory, pre-installed has always only contained the drivers for that specific model and no others.
If you want to install on a different model Mac, you need to have the original installation DVD or go back to Recovery_HD and download again.
Your 13" and 15" have somewhat different Hardware, and you need the correct version for that model or a purchased or downloaded version to proceed.

I have been storing my Aperture and IMovie Libraries on an external hard drive that recently died. Fortunately I've been using Time Machine to back up to a 2nd external drive. How do I restore my libraries to a new external hard drive?

I have been storing my Aperture and IMovie Libraries on an external hard drive that recently died. Fortunately I've been using Time Machine to back up to a 2nd external drive. How do I restore my libraries to a new external hard drive?

This is a tricky one.
Open up Time Machine and go back to a date using the timeline on the right side of the window when you know the drive was working and was backing up as part of Time Machine backups.
Click on the name of your Mac under the Devices heading on the left side of the window in Time Machine, and if things are working correctly you will see Macintosh HD (or whatever you have named it) and the name of the external hard drive that was backing up in the past.
Right-Click on the name of the external hard drive and then click on "Restore (name of drive) to....." You may be asked for your adminstrator password at this point.
It might be easier to restore the drive contents to your desktop if you have room on your Mac, and then copy things over to the new external drive where you want to store the Aperture and iMovie Libraries.
Once the libraries have been moved over the new external hard drive, you will likely need to "point" Aperture and iMovie to the location of the libraries on the new external hard drive.

I perviously transfered all my iTunes music to an external hard drive. But now when I connect the external hard drive and try to play a song, I get an error message saying that I need to "locate" my music. I don't how to find it on my external hard drive.

I perviously transfered all my iTunes music to an external hard drive. But now when I connect the external hard drive and try to play a song, I get an error message saying that I need to "locate" my music. I don't how to find it on my external hard drive. Please help for I am not that computer savy and don't want to mess anything up.
Thanks!

I called Apple Support and they walked me through it. They told me to basically copy and paste my music to the external hard drive. (I think.) Or maybe it was they had me transfer a folder to the EHD. I don't exactally remember it was a few years back. But I tried to plug in the EHD before starting and...nothing. Still says same thing, "locate file."

HT1391 I had all of my music on an external hard drive that failed. I have iTunes Match so all of my music was synced with the "cloud". How do I now download and save all of my music back down on a new external hard drive?

I had all of my music on an external hard drive that crashed. I have iTunes Match so all of my music was synced in the cloud. How do I now re-load my music back down onto a new external hard drive?

Hey Rbe58!
I believe this question can be answered by the information in the following article:
iTunes 11 for Windows: Access all your music anytime, anywhere with iTunes Match
http://support.apple.com/kb/ph12492
Play or download songs from iCloud
You can play songs directly from iCloud, or you can download songs so you can play them when you’re not connected to the Internet.
If a song is available in iCloud, it has a Download button next to it.
To play the song, double-click it.
To download the song, click the Download button.
After you download a song to a computer, it remains in the computer’s iTunes library, even if you turn off iTunes Match.
To only display downloaded songs in your iTunes library, choose View > Hide Music in the Cloud. This also hides any previous iTunes Store purchases you haven’t downloaded.
For information about downloading and playing songs on an iOS device, see the documentation for the device.
Thanks for using the Apple Support Communities!
Cheers,
Braden

Will Time Capsule back-up an external hard drive that is connected to it directly via USB?

I'm considering a macbook air, but I have ~200GB of music and photos that currently lives on another laptop (and is manually backed up to a 500GB ext. hard drive). Ideal set-up would be as follows:
1. MBA (128GB) with just the OS, applications and ~ 5GB of .doc, .xls, .pdf, etc.
2. The 500GB hard drive (loaded w/ music and jpegs' and permanently connected to Time Capsule so that I don't have to plug it into the MBA everytime I want to use music/jpegs)
3. Time capsule (constantly backing up the MBA and hard drive via time machine).
Does anybody know if this is possible (i.e. will the TC back up an external hard drive that is permanently attached to it, rather than attached to a Mac?)
Does anybody have other suggestions (without having to buy any more gear) for storage/back-up that don't require that I plug that external HD to a computer every time I want to access the data?

sixschlitzes wrote:
Does anybody know if this is possible (i.e. will the TC back up an external hard drive that is permanently attached to it,
No, sorry, Time Machine cannot back up from a network location.
Does anybody have other suggestions (without having to buy any more gear) for storage/back-up that don't require that I plug that external HD to a computer every time I want to access the data?
The 3rd-party apps CarbonCopyCloner and ChronoSync (and probably others) can back up from a network location.

I connected my external hard drive to my new imac to put all of the information from my macbook onto it. i have been working on the macbook now and want to reconnect the external hard drive so my imac is updated with the work. How is that done?

I connected my external hard drive to my new imac to put all of the information from my macbook onto it. I have been working on the macbook now and want to reconnect the external hard drive so my imac is updated with the work. How is that done? or is it possible?

As I said, I don't use Time Machine, so it'd be best to wait for an "expert" answer, but, with my very limited knowledge, I'd say: probably not - so, for now, I'd suggest you read up on Time Machine:
http://web.me.com/pondini/Time_Machine/Home.html
http://support.apple.com/kb/index?page=search&src=support_site.home.search&local e=en_US&q=time%20machine
And, you might be attracting more knowledgeable answers if you were to post this question in the Time Machine Forum (part of the Snow Leopard forums).

External hard drive that stored music has crashed. How can I safely get my songs from my I Pod back onto computer in a new external drive?

External hard drive that stored music has crashed. How can I safely get my songs from my I Pod back onto computer into a new external drive?

See this older post from another forum member Zevoneer discussing different ways to copy content from your iPod back to your PC.
https://discussions.apple.com/thread/2452022?start=0&tstart=0
B-rock

I connected my external hard drive that was previously on my pc and everything read fine. I later went on it asked to format and won't read at all on either computer

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