HELP I partitioned an external hard drive by mistake - how to undo???

HELP HELP HELP
I just bought a new WD 1TB hard drive (so now I have two) and wanted to partition in (1 partition) but by my stupid mistake I had chosen the wrong hard drive - so now about 1TB worth of music and films and photos (my entire iTunes and iPhoto library is gone - and do not have a back up). I did the partition with Disk Utility.
Is there anyway to get it back???
Kenneth
PS. Will order a time machine after submitting this question
PPS. Running the latest Apple software etc

Kenneth the Dane wrote:
HELP HELP HELP
OUCH OUCH OUCH
+*Stop using the drive immediately+* to stop further loss due to files being overwritten.
You need specialized +Data Recovery+ software, or a service that performs the function. It's not cheap, and there are no guarantees.
The app mentioned here most often is +Data Rescue 3,+ but I haven't used it myself, so can't recommend it over any of the others.
Some of these have a free "trial mode," that will tell you if there's anything to be recovered, and perhaps recover a single file. For more, you have to pay the $$.
You'll also need another drive to receive anything it can recover.
PS. Will order a time machine after submitting this question
You already have +Time Machine.+ It's part of OSX Leopard and Snow Leopard. It can back up to an external drive, or a Time Capsule (Apple hardware - combination of wireless router and hard drive), or a shared drive on another Mac.
When you get to it, you might want to review these:
Time Machine Tutorial
Time Machine 101
How to back up and restore your files
Time Machine Features
Apple - Support - Mac OSX v10.5 Leopard Time Machine
and perhaps browse the Time Machine - Frequently Asked Questions *User Tip* at the top of this forum.
Look for apps or services under +Data Recovery+ via Google, VersionTracker.com, or MacUpdate.com.

Similar Messages

Hello, I need help to retrieve deleted information to partition an external hard drive. What should I do?

Hello, I need help to retrieve deleted information to partition an external hard drive. What should I do?

I'm not about the question, and giving you the right answer requires me to ask a few more questions.
Do you want to retrieve deleted information for future usage, or to completely delete a partition? The latter is straightforward: simply erase the partition. The former is more complicated: it's very difficult, even using available commercial software, to recover deleted information. If the data is important, you may want to contact a professional like DriveSavers. It won't be cheap.

HT201250 What does it mean to "partition" an external hard drive? Is it something that I want to do?

What does it mean to "partition" the external hard drive? Is it something I want to do? How do I save files from another hard drive to the new one? I have to reformat the old one as it was not set up correctly. The drive I have is Seagate but not specifically for MAC, so I have to format it.. never have done this before. Don't know the jargon. I read that Time Machine will back up automatically but I want to take files from the old drive to the new one. Do I have to take them to the computer first and then to the new drive? I need more memory on my computer. It's way too cluttered and congested. HELP!

Whoa! Slow donw. TRhere's a lot here. I would suggest you buy a good book on computers in general or macs in particular, one is "OSX the missing manual".
What does it mean to "partition" the external hard drive?
It means you take one large drive and make it into more than one volume. This means that it might show up as 2,3 or 4 inde[pendenmt drives. Each one could have, for example, a different operating system on it. Its a good thing to do if you want to use a drive for several purposes
Is it something I want to do?
beats me, you didnt way what you're trying to accomplish. Sorta like sking "should i turn left?" Depends on where you want to go.
How do I save files from another hard drive to the new one?
See advice n book above. Copy them in finder. Copy them in unix. Use a backup or sync utility. No different from Windows in that respect.
I have to reformat the old one as it was not set up correctly. The drive I have is Seagate but not specifically for MAC, so I have to format it.. never have done this before. Don't know the jargon.
Hook it up. Run disk utility. Partition 1 or more partions. GUID map. Format each partition Mac OS extended, Journaled. for more, read book, above. Seriously - we could give you more tips, but you really should learn enough to be comnfident.
I read that Time Machine will back up automatically but I want to take files from the old drive to the new one. Do I have to take them to the computer first and then to the new drive?
I have no idea what you are asking.
I need more memory on my computer. It's way too cluttered and congested. HELP!
What kind of memory and why? RTAM? Hard drive space? Explain. By the time you are done explaining, i suspect you will have ansered your own question.
Good luck,
Have you read the PDF manual for your cmputer?
Have you used a search engine to look for info, for example, in two seconds i got this from google and wikipedia:
http://en.wikipedia.org/wiki/Disk_partitioning
Grant

Disk utility can't repair disk (1 partition) on external hard drive

I've search here some to try to find the answer to my scenario, but I really don't understand how Disk Utility got involved in my external hard drive to begin with, so here's my question.
I have a 2TB Western Digital My Book Studio FW800 external that has 5 partitions, connected to my 2011 iMac. I had help doing the partitions and don't really remember the reasoning, but one is just for my SuperDuper! backup, one is Miscellaneous, one for movie clips off my camcorder, one for misc scanned photo's and one for my genealogy research.
I back up using Time Machine to a Time Capsule and also to this WD hard drive with SuperDuper!
Recently I'm getting a pop up message that "Mac OS X can't repair the disk "Genealogy"'. And it needs to be reformatted. It's become a read only disk. When I look in Disk Utility it shows all the partitions as "Mac OS Extended (Journaled)" EXCEPT for the one in question. I also noticed that there are a lot of files with "date created" being the same date in 1969! These files may be letters I've written or photo's I added to that partition within the last few years.
I think I have to completely reformat the entire external hard drive to repair this, but I want to make sure. Because it's going to be a major hassle backing it all up to another external (having to get one first) and then figuring out how to make the files that have turned "read only" in that one partition, back to their original state!
Does this sound right, that I have to reformat the entire external hard drive? And how do I get the read-only files back to their original state.
Thanks, Sandy

I don't back them up. There isn't much on them, besides the one I save video files too, but those are 2-3 min snippets of school events, that are just uploaded to youtube without any editing (like titles, fade ins, etc.) through iMovie. All those vid's are on original tapes I have.
The partition that is giving me problems, I do have most of that on my iMac's hard drive, just not as organized. I guess it's just seeming overwhelming to re-created those files into the same file structure on my iMac, but I think it could be done.
I'm still not sure why my brother had me do the partitions like this. In the past I had just two partitions, one for the back up and the other for random stuff that I didn't want to take up space on my iMac.

HT201250 Do I need to partition my external hard drive if I'm using Time Machine and other storage?

I never used Time Machine before. I was storing select files on my external hard drive as well as using my libraries (IPhoto, ITune, IMovies) directly off of the external hard drive. That hard drive is giving me problems, so I bought a new one. I want to set up Time Machine on this one, but I also want to keep my active libraries on it. Do I need to partition the external hard drive?

You can partition the new drive, just don't make one of the partitons a TimeMachine drive, save a TM for a entire drive with more space than the boot drive as it saves "states" thus requires more room than most people expect.
I highly advise one drive to one drive for backups, and not placing too many backup eggs in one vulnerable hardware basket basically.
Drives are cheap, data is not. Hardware can fail just as often as software, so you need a multiple backup and storage stragedy to protect even against theft and fire.
Most commonly used backup methods

I have an IMAC and I'm running OSX 10.9.2. I'd like to store my Aperture /IMovie Libraries to an external hard drive. In addition, I'd like to partition the external hard drive so that Time Machine can use it to both back up my IMac and the externa

I have an IMAC and I'm running OSX 10.9.2. I'd like to store my Aperture /IMovie Libraries on an external hard drive. In addition, I'd like to partition the external hard drive so that Time Machine can use it to both back up my IMac and the external library drives. Is this possible? Can I set up a RAID 5 format for redundancy?

I'd like to store my Aperture /IMovie Libraries on an external hard drive.
That is fine and recommended.. use the fastest disk you can afford.. ie Thunderbolt>USB3>FW800>USB2.
In addition, I'd like to partition the external hard drive so that Time Machine can use it to both back up my IMac and the external library drives.
Let me be clear.. you want to partition the one disk.. use it for TM and move your files to the external disk.. and then backup to the same disk.. You can do it.. but that is not a backup.. that is an experiment in how long you can get away with running files and backups on the same disk before you lose everything.. like Russian Roulette.. pull the trigger enough times and laws of probability will do you in.
You must have backups on a different disk .. otherwise it is pointless.
Can I set up a RAID 5 format for redundancy?
No.. you can buy special USB and Thunderbolt external drives that support RAID..
BUT that is still not a backup.. let me show why.. you make a silly move and corrupt your file in aperture.. it is not that rare.
Raid will corrupt all copies of the files.. it is replicated across all disks.
Delete a photo it is deleted across all disks.. you have no recovery.
Alway, always consider RAID system one disk.. backup onto another disk.. and if the photos or movies are at all important to you.. ie your family .. make another copy and store in a relatives house.. There is no such thing as too much redundancy.

Partitioning an external hard drive for Mac and PC

I want to partition an external hard drive (3TB) into 3 even partitions. I want to use one for PC storage, one for Mac storage and the last for Mac backup. Is this possible and how do I do it?

Drive Partition and Format
1. 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. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Apply 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 Security 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.
7. Re-partition the drive to create the three partitions. The one you wish to use on a PC you should format MSDOS (FAT).
When you connect the drive to your PC it should have no problem reading the partition set up for a PC. Now while on the PC you may wish to consider reformatting that partition using ExFAT (if supported on your PC.) This format is more compatible with both OS X and NTSF supporting long file names and other FAT filesystem irregularities.

How can I partition an external hard drive with data in it? When I select the drive, the partition option is grayed out.

I am having a problem partitioning an external hard drive with data in it.
When I select the partition, everything is grayed out. I can't add a a partition for some reason. When I asked this question to other people, they told me to select my partition "io" to do it from there.
As you can see, I can't seem to partition it form there either. I ran the Verify Disk utility but the volume came out okay.
Any ideas as to what the problem would be?
Thanks!
Luis

Select the main hard drive entry (topmost one.) Click on the Partition tab. Shrink the existing partition by grabbing the sizing gadget in the bottom right corner and pushing up until you free up enough space for your second partition. Be sure you do not shrink to less than the space currently occupied by your files. Click on the Add[+] button to create a new partition in the free space. Click on the Apply button and wait until the partitioning is completed.

How can I partition my external hard drive supporting mac OS in one partition and windows OS in another?

Hello everyone, how can I partition my external hard drive supporting mac OS in one partition and windows OS in another?

OK. Start with:
1. 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 two (2). Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. Click on the Erase tab in DU's main window. Select one of the two partitions, preferably the first one, change the Format type: to MSDOS then click on the Erase button.

How do I partition my external hard drive without losing data?

How do I partition my external hard drive without losing the data already on it? I've been using it with Time Machine on my old computer, but want to use it as a regular drag-and-drop type back up on my new computer. Is there any way to basically split the hard drive so I can still access the Time Machine backups on my old computer, but also be able to use it with my new mac? Thanks!

If you reformat the drive all data is lost.
The only way to save the data is to copy it somewhere else during the reformat.
Drag & drop will not backup things correctly.
I suggest you set up partition for each Mac and then point Time Machine to each of the partition for each of the Macs.

Partition of External Hard Drive

I am trying to partition an external hard drive into three partitions - one for the time machine backups, one for miscellaneous storage and one for storage of files that I can share with a PC. I was able to partition the drive successfully but all three partitions are in the Mac OS Extended (journaled) format. I understand that I need to change the format of the part I want to share with the PC into FAT but when I click on that drive, I don't have the option. I tried looking under the "erase" tab but the only options are: Mac OS Extended (journaled); Mac OS Extended; Mac OS Extended (case sensitive journaled) and Mac OS Extended (case sensitive). Now, if I look at the entire hard drive (not clicking on one of the partitions), the option is there. I could erase the entire thing using the MS DOS (FAT) option, but I don't want to do that. How can I format only one of the partitions in the MS DOS (FAT) format?

I think it's because of the drive's Partition Map Scheme. In Disk Utility, select the drive in the left side bar. Look at the bottom of the window, and find Partition Map Scheme. If it is Apple Partition Map, you will not be able to format it as MS-DOS (FAT).
The way to fix this is to go to the Partition tab. For Volume Scheme, select 3 Partitions (even if it already is 3 partitions). Click on the Options... button. In the window that opens, select either GUID Partition Table or Master Boot Record. GUID Partition Table would be best for use on the Mac, as long as the PC is OK with it (I'm not sure). Now, when you return to the Partition tab, you should be able to select MS-DOS (FAT) for one partition while keeping the others formatted for Mac.

Hello! Help please! Best external hard drive preferably 1TB for macbook pro 2011. thank you!!!

Hello! Help please! Best external hard drive preferably 1TB for macbook pro 2011. thank you!!!

You can pickup any 1TB USB powered drive for about $100 at just about any local office supply store.
It comes formatted FAT32 (MSDOS) for reading by OS X and Windows PC's.
However if your files sizes are going to be larger than 4GB in size (like video tends to be) then your going to need to select the drive in OS X's Disk utility (in the Applicaitons > Utilities folder) and format the drive exFAT instead.
exFAT is a drive format that 10.6.5 and later Mac's, Windows Vista and 7 machines can read just fine. XP machines need a free exFAT drive install from Microsoft.
Do backup the 1TB to another 1TB drive using Carbon Copy Cloner or another backkup utility because 1TB is a lot of data to lose on a $100 drive.
I don't advise the "port powered" USB drive as these tend to have power issues and with 1TB of data on it, very risky. Use a powered drive if you can all help it.

I'm trying to back up 10.6.8 (snow leopard) and all my files before upgrade to Mavericks. I have an old but sturdy external hard drive...how many GB available will I probably need to back up the whole thing? thanks!

I'm trying to back up 10.6.8 (snow leopard) and all my files before upgrade to Mavericks. I have an old but sturdy external hard drive...how many GB available will I probably need to back up the whole thing? thanks!

You will need a separate partition unless you plan to use the entire drive. You will need an amount of space somewhat larger than the total space now used on your startup drive. If you select the startup drive's Desktop icon, then press COMMAND-I to open the Get Info window. Used space will be shown in the topmost panel. Add a GB or two to that number to determine how much space you'll need for the backup.
Do not backup on a drive that has any files you want to keep. You can make a bootable backup as follows:
Clone using Restore Option of Disk Utility
1. Open Disk Utility in the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4. Select the destination volume from the left side list and drag
it to the Destination entry field.
5. Select the source volume from the left side list and drag it to
the Source entry field.
6. Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.

External hard drive has crashed how do i recover my purchases previous library ?

external hard drive has crashed how do i recover my purchases previous library ?

http://www.youtube.com/watch?v=Nc4S2l9neKM

How do I restore all of my itunes content onto my newly installed computer drive? All my purchase are no longer in my account but I did back up the files onto an external hard drive. Now how do I get them back? Please

how do I restore all of my itunes content onto my newly installed computer drive? All my purchase are no longer in my account but I did back up the files onto an external hard drive. Now how do I get them back? Please

Ummals wrote:
...I did back up the files onto an external hard drive. ...
Did you follow all the steps as detailed here...
http://support.apple.com/kb/HT1751

HELP I partitioned an external hard drive by mistake - how to undo???

Similar Messages

Maybe you are looking for