Formatting of External Hard Drive to be usable by both Windows and MBP?

Hello, I would appreciate some advice regarding the formatting of hard drive here as I'm pretty new to the whole Apple/Macbook Pro scene!
I am currently using a MBP (Retina) for about 2 months now.
I was previously using a Windows PC and had a external hard drive to back up information from it. However, the EHD can only be read by my MacBook Pro and I can't seem to transfer any information into the hard drive. I've been reading up online and it seems that I would have to reformat the external hard drive so that it can be both used by Windows and Macbook.
I have 2 questions here:
If I were to reformat it to FAT32 or exFAT, will I have to first backup all the data on the hard drive first on another drive? Or will my data be safe amidst the formatting?
Will this formatting of the hard drive allow it to be read by both Windows and PC?
I would really appreciate some advice on this from anyone who has some clue about this! Thank you!!

Timemachine
http://support.apple.com/kb/ht1427?viewlocale=en
Ok if you think about backing up over timemachine, your harddrive should have at least 3 times that size you want to back up. Because of incremental Backups over timeperiods.
So my suggestion, for exchange between Windows Mac --> exFat and for timemachine buy a new Harddrive that fits the specifications

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Hello once again.. i have formatted my external Hard drive it using exFAT, now my windows cant detect my device, can u plzz help me the whole purpose is getting ruined, i use Windows 7 ultimate 64 bit

hello once again.. i have formatted my external Hard drive it using exFAT, now my windows cant detect my device, can u plzz help me the whole purpose is getting ruined, i use Windows 7 ultimate 64 bit

This is a problem with the Mac OS X implementation of exFAT. I've had the same problem.
Best is to use a Windows box to format the drive exFAT. Then it can be read by both Windows and Mac OS.
But aren't Macs supposed to "Just Work"? Not in this case.

Which format for external hard drive to use with time machine backup and connect to windows laptop?

Hi! I have an external hard drive on which I have transferred my iTunes library (just mine - not others). I have also a folder containing just films (some but not all of which are in iTunes too) Everything has been working just fine until yesterday I noticed that Time Machine was not including the external hard drive in back up as it wasn't formatted. So I have moved everything back to the Mac hard drive and and ready to format the external hard drive - but understand that if I do the contents cannot be opened from a windows laptop ... is that right? Is there are format I could choose that would allow Time Machine to back up and allow Windows to open as well (the idea being that I take the external hard drive with me on holidays etc!!) Many thanks for any advice.

ok - I understand. I have managed so far to format the drive (on windows) to exFAT file system - which apparently works with both Windows and Mac - but you're correct - it will not be included in time machine backup as I have checked the back up files and Samsung is not showing. Reckon I'm onto having to buy yet another portable hard drive just for windows - or of course buy myself a new mac book!! Can I ask you please - does the drive have to be clear of everything before I change the format - or can I change it with the files still in there? Also, got any quick ways duplicating the files onto another External Hard drive (for use on the windows laptop) At the moment the files are taking 2/3 hours + to copy over! Thank you!

All my external Hard Drives stopped showing up in both Finder and Disk Utility

Hello there.
i have this strange issue that occured just out of nowhere without me (knowingly) having contributed anything to it.
yesterday i launched my iMac and my external firewire drive wasn't showing up in neither the finder nor on the desktop. i instantly thought about a hard drive crash, but soon tried other things to evaluate (or not) my guess.
for instance, i unplugged the drive waited a few minutes before i plugged it in again. since this iomega drive is also equipped with a regular usb port i also switched cables and tried connecting it via the iMac usb sockets as well as via an usb hub without any luck. the drive still won't show up. so i launched the Disk Utility, to see if the drive needs some checking/repairing, but to my surprise it wasn't showing in Disk Utility either.
thus far i only considered this to be an issue with only this particular external drive, but when i eventually switched on a 2nd external drive (this time an usb drive i use for Time Machine) that drive also refused to show up in either the Finder or the Disk Utility app.
curious as i was, i then fired up a 3rd and 4th external drive and now had all 4 drives running at the same time. none of which were showing up, just as if they weren't even connected with the iMac.
this strikes me as more than odd. i've heard about hard drive failures and crashes. they just occur over time. maybe and under some very strange coincidences it is possible that two external hard drives quit their jobs at the very same time, but seriously .... 4 of them?? i hardly think so.
well, maybe it's the iMac's usb/firewire controller that's causing the trouble, i thought. but then again, my other connected devices (iPhone, iPad, Printer, Scanner, eyeTV) are functioning and get detected just fine as far as i can tell.
i have no idea what's going on. i dismiss the idea of 4 external drives having crashed all at the same time just as much as i don't think that the iMac's usb/firewire controller has got any issues. re-formatting any of the 4 drives is out of the question and even if i'd consider such desperate measures, the Disk Utility wouldn't let me re-format anything anyhow, because the drives aren't listed there. i wish i could just use my Time Machine to resolve the issue but, as i mentioned earlier, i can't access the Time Machine because it also won't show up.
please, i need an expert's help here. please, somebody bring back my 4 external drives so i can access them in finder again.
any help will be much appreciated.
thank you in advance..
..Otis

Launch the Terminal 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.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Terminal in the page that opens.
Drag or copy — do not type — the following line into the Terminal window, then press return:
diskutil list
Post any lines of output that appear below what you entered — the text, please, not a screenshot.
If any personal information appears in the output, edit before posting, but don’t remove the context.

External hard drive filesystem to use for both pc and mac

hi everyone,
i've got a 120 gig portable WD passport harddrive that i'm planning on using to move files between my pc and macbook.
it is recognized fine on both and I am able to copy files to my macbook but cannot write files to it, i'm assuming it has to do with the file system it's using (not sure what it is off hand bought it used and preformated)
any suggestions on how to get it working on both platforms?

Important Note: Reformatting a HD will overwrite all existing files.
Before attempting Reformat,Be sure to Back-up important files to another HD,iPod,CD or DVD.
Jim
PowerBook G3 500 Mhz "Pismo"/ 2.0Ghz BlackBook 2GB OWC RAM Mac OS X (10.4.9)

How do i format an external hard drive for use on both windows and mac book air?

how do i format an external hard drive for use on both windows pc and mac book air?

Use exFAT on the PC.
(71374)

How to format an external hard drive for vista and snow leopard?

I want to format an external hard drive to attach to Airport Extreme base station to us with Snow Leopard and a PC with Vista. What format should I use for read/write access for both?

I use NTFS for my external drives being used on both Macs and Windows. To get the Mac to write to NTFS, you need a separate program. I use Paragon for Mac software. It works behind the scenes. There are also some free things that do the same thing but I found them cranky and unreliable. YMMV.
Windows can not read any of the Mac disk formats without additional software.. FAT32 is fine but is extremely limited.
For the last year, I have had absolutely no problems on any computer, Mac or Windows.

Is it possible to format an external hard drive on my mac?

I purchased a portable external hard drive to back up my former pc in the hopes of using it on my mac. Obviously, I did not research this seeing now that I can integrate my files and photos from my pc to my mac. It appears possible to format the external hard drive to my mac os, which should be done prior to downloading files from my pc to the hard drive. Has anyone dealt with this or am I the only idiot that purchased the external hard drive thinking that was the thing to do before my pc dies completely?

A HD formatted in EXFAT will transfer data between both PC and Mac.
However dont make the titanic error most do in having merely a single external HD backup of your data, thats a tragedy waiting to happen.
HD are cheap as dirt.
Ideal situation is 3 HD , 1 for Mac backups, 1 for data archives stored away safely and updated as needed / often.
and a 3rd HD in Exfat for data transfers (or a thumb drive for the same thing to save $$)

How can i format my external hard drive to write files from Mac without loosing the files that i alredy have on my external hard when i used it with windows?

How can i format my external hard drive to write files from Mac without loosing the files that i alredy have on my external hard when i used it with windows?
I have been using Windows to write files to my 1TB WD external hard drive and I do not want to format to loose the files capacity of around 500GB
Someone, Please help

Hi Allen,
Is there any way to store the back up to Mac and restore after formating?

How can a format an external hard drive to Fat 32 format

how can i format an external hard drive to a Fat 32

Drive Preparation
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 MBR then click on the OK button. Set the format type to MSDOS (FAT) Click on the Partition button and wait until the process has completed.

If I have to format an external hard drive to make it Mac compatible, will it delete all the content in the external hard drive?

If I have to format an external hard drive to make it Mac compatible, will it delete all the content in the external hard drive?

As others have said, the answer to your question is a big YES. Formatting a drive will delete everything!
To keep your data, yet reformat the drive for optimal Mac compatibility, you will need to:
1) copy your files to a different hard drive (I would recommend two different locations if you value your data)
2) repartition/format the external drive
3) then copy the files back to the external.
You haven't given details but if you need the external to ONLY be compatible with the Mac (and no longer care if if can be read by Windows), then you will want to partition the drive using the GUID partition scheme, and format as the (HFS+) "Mac OS Extended (Journaled)" filesystem. You can do so using the built-in "Disk Utility" application on your Mac (in the Applications/Utilities directory). Here are instructions:
http://support.apple.com/kb/ph5845
If you need the drive to be compatible with both Mac and Windows computers then please post that so someone can recommend a solution for your specific needs.

I can't format my external hard drive, some one please help me.

i can't format my external hard drive, when i am trying using disk utility its some times not showing the erase option. when its shows erase option its saying earase failed can not unmount the disk.

Repair the Hard Drive and Permissions - Mavericks, Lion/Mountain Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.

I get the following error when formatting a external hard drive. Partition failed with the error: POSIX reports: The operation couldn't be completed. Cannot allocate memory

I get the following error when formatting a external hard drive.
Partition failed with the error:
POSIX reports: The operation couldn’t be completed. Cannot allocate memory
I have a Macbook pro 13" A1278. I purchased it around december 2010. I have a HHD 3.5" drive desktop select II 1.5TB. I purchased it around Febuary/March 2011 to use with my Macbook pro. I formatted it and moved all my files to there, I got it so my macbook's hard drive wouldn't brake and I lose everything on my macbook.
Is there any fixes?

First, try a system reset. It cures many ills and it's quick, easy and harmless...
Hold down the on/off switch and the Home button simultaneously until the screen blacks out or you see the Apple logo. Ignore the "Slide to power off" text if it appears. You will not lose any apps, data, music, movies, settings, etc.
If the Reset doesn't work, try a Restore. Note that it's nowhere near as quick as a Reset. From iTunes, select the iPad/iPod and then select the Summary tab. Follow directions for Restore and be sure to say "yes" to the backup. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod. Again, say "yes."

How can I find out which mac format my external hard drive has

I have a PD LaCie drive. I had formatted it about a month ago, but now reading several posts, it appears that the best format is mac OS extended (journaled). I am not sure if that is the one that I had originally chosen. How do I find out which format my external hard drive has?
Thanks.

Select it on the desktop or in the Finder's sidebar and choose Get Info from the File menu. If it doesn't show up in either location, check the settings in the General and Sidebar tabs of the Finder's preferences.
(63966)

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

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.

Formatting of External Hard Drive to be usable by both Windows and MBP?

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