OS X Mavericks :: How To Reformat External Drive
Aug 31, 2014
I have a 1 TB Lacie external drive. it was originally formatted as Mac OS Extended (Journaled, Encrypted). It also might have been formatted as a bootable drive, but I am not certain. Today I mounted the drive, entered the decrypt key and want to re-format the drive as Mac OS Extended (Journaled). I am using Disk Utility to do this. When I click on Erase within Disk Utility, I get this error: I am using Mac OS X Mavericks. how to fix this so that I can re-format the drive?
Info:
iMac (27-inch, Late 2012), OS X Mavericks (10.9)
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Jun 13, 2010
I recently bought a macbook pro and am making the transition from a pc to mac. It's all gone well so far, but I'm not sure what to do with my music. I currently have about 200 gb of music on my external hard drive (connected to my pc.) The internal hard drive on my pc does not have space to accomodate the files on my external.
I do not have the "Copy files to iTunes music folder" currently enabled because my internal doesn't have space. (And I like having the original music files in a separate location as I have over 30,000 songs). I don't know how to transfer my external and music to my macbook, since I will have to reformat the drive (which would erase everything on it, therefore I somehow have to make a backup either on my mac or on my pc. but what to do about the iTunes .xml file and iTunes folder on the internal pc drive??).
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Jan 18, 2010
On my vista / xp machines, I have several external hard drives, Seagate, WD, HP, and 1 enclosure kit which contains some old internal hard drive.I don't really need all these drives on my VISTA/XP machines, as I'm trying to migrate to MAC.
I mostly use my mac for photos & creating home movies. So backing up the priceless pictures of my kids is critical.Do I really need to buy a MAC based external hard drive? or can i simply reformat one of my old drives to use on my mac. I know macs have their own file system (as pc's have fat32&ntfs).
Will apple time machine work with a generic re-formatted external hard drive.I also notice their are fewer choices for MAC ready external hard drives ...less specials than PC based externals.
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Sep 28, 2010
I have 2 WD External Hard Drive Im trying to copy files from one to the other it wont let me because its read only..
If i Reformat the one with the files so i can copy it using my imac would i lose my files in there?
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Jul 16, 2008
I've never done anything but plug a HD in and get right to work. Now that I've got an Apple, I'm a total nervous Nellie.I just got a WD external hard drive that is FAT32. I understand that the Mac can read/write this format. Would you recommend that I change it to HFS+ or should I leave well enough alone?
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Apr 28, 2010
I have a SimpleTech external HD that I want to reformat from PC to Mac. I went to disk utilities and selected "erase", but it will not erase the HD so that I can reformat it.
I have since attached it to my PC, but do not know how to erase/reformat on a PC (I'm a Mac user that only uses my PC for running specific programs). How can I erase this hard drive and reformat it?
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May 13, 2012
I have been using my Seagate external hard drive for movies on my Windows PC and now I have a MacBook. I want to add more movies from my Macbook to the hard drive but it's read only. I want to drag these movies to the harddrive without loosing what's already on there. Can I reformat without loosing everything?
Info:MacBookPro
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Jun 29, 2012
I purchased an external hard drive ( a Seagate 2 TB Expansion Desktop Drive) and was told by the MAC rep in the store to perform the following simple task to reformat the disk so I could drag and drop files from my iMAC and store them on the external hard drive:
1. Go to Disk Utility
2. Choose the External Hard Drive
3. Select Erase
4. Select MAC OS Extended (Journaled)
5. Click on Erase button
Unfortunately when I do this, I get the following error: Disk erase Failed with Error: File system formatter failed? I have Mac OS X (10.5.8)...
Info:
iMac, Mac OS X (10.5.8)
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Jul 22, 2009
I try erasing it again and making sure it is formatted for MSDOS and still no luck. So I try partitioning and that is also no luck. 1 part for mac, other free space because no windows option was present
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Mar 29, 2009
I have a Western Digital 500gig external hard drive (model wd5000c032) which I'd like to completely reformat to use with my macbook pro and Time Machine (running os 10).As it is now, my mac can only use 147 gigs, and often gives an error message saying it needs additional space to backup. It was previously used on a pc to hold pictures, but I doubt it used anything near 357 gigs for that.
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Jul 7, 2010
Yesterday I reformatted my Macintosh hard drive, partitioned it, installed Snow Leopard on one partition and Windows 7 on the other. I installed all the drivers for Windows 7 from the Snow Leopard disc.
When I plug in my 1TB Seagate external hardrive it's not showing up in Snow Leopard or Windows 7. Not even in Disk Utility. I tried plugging the external drive into my Windows laptop and a pop-up comes up saying "USB Device Not Recognised. One of the USB devices attached to this computer has malfunctioned, and Windows does not recognise it." I think that this may just be because it's formatted to Mac OSX?
The hardrive had all of my photos, videos and music on so I hope it's salvageable. I find it hard to believe that the hard drive malfunctioned at the same time I reinstalled the software onto the iMac.
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Feb 5, 2012
I purchased a Toshiba Canvio 3.0 external hard drive and I need to reformat it to work with my Mac.
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Feb 18, 2012
I have an external hard drive upon which I put movie files that I view through a Sony box (like the Roku box). I brought my MacBook in for a repair and connected the same external HD and used Time Machine to make a back up. It did reformat it in order to do so, but since the Sony box isn't a pc or mac I didn't think it would make a difference, but now the Sony box won't recognize HD. Is there a way to reformat it on my MacBook so that I can use it on the Sony box again, or do I need to reformat it with a Windows computer? I had no issues when transferring files only and using the Sony box.
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Jun 24, 2014
I recently purchased a 3TB Seagate® Expansion® external hard drive for PC. My plan is too reformat it so that I can use it, but it has been acting wierd on me. It says on Disk Utility that it is 4 gbs but I have a 3TB one. Im on OSX mavericks by the way.
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Apr 15, 2012
How do I reformat my external hard drive with Mac OS extended using desk utility?
Info:Mac Pro, Mac OS X (10.5.8)
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Sep 8, 2014
I have recently bought a MacBook Pro (10.9.4) with a 128 Gb solid state drive. My intended backup strategy is to have all my documents on an external 1 Tb USB3 drive (i.e, not in the MacBook Pro) and to back up that drive AND my Macbook (system, applications, mail etc) to another, powered 2Tb drive. I’m assuming I’ll have to partition the 2Tb drive first, by the way.
Info:
MacBook Pro, OS X Mavericks (10.9.4), 2.9 Ghz Intel Core i7
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Jun 24, 2014
How do I reformat the (startup) HDD of my iMac.
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Jun 24, 2014
Can a coy of Maverick be downloaded to a flash drive or external hard drive?
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Jun 20, 2014
I have a Macbook pro 17" (2011) running Mavericks with a Crucial 960Gb SSD and a 750Gb WDC in the optical bay. My ssd is divided into 710 Gb to OS X and 182 Gb to Windows 7 Bootcamp. All was well until the other day when the OS X partition failed to boot. I got the grey screen and the very slow progress bar which after 15 minutes powered the machine off. The Bootcamp partion continues to work without issues. I booted from an install disk and ran disk utility. The OS X partition appears greyed out on the left panel. I attempt a repair disk and after a 15 minute delay it says it is unable to repair the last action being "updating boot support partitions for the volume as required". Its all backed up regularly on time machine but when I boot an install usb and attempt to restore from time machine, the OSX disk does not appear as an option. I go back into disk utility and attemp to erase/repartition the disk to start a new install but it refuses to unmount. I appear to be running out of options,
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Feb 8, 2009
So I have an external firewire drive I use for all my Time Machine backups in OS X. It's formatted in the typical Mac journaled format or whatever it is. I have 2 partitions, one with my Time Machine backup. I booted in Windows 7, and intended to reformat the other partition to work with Windows, but it didn't want to let me change that partition, though it did recognize it as an OS X format.
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Aug 22, 2014
Is it possible to reformat a single partition of a disk w/o reformatting the entire disk?Or must one reformat the entire disk? In DU, If I click on the volume/partition in question, I do NOT get the tab “Partition.” If I click on the disk, not just the volume/partition in question , then I do get the tab “Partition.” Also, does using DU to secure erase a volume by overwriting with 0s, cause a format issue? Some details on my other post:Create a bootable clone using Disk Utility
Info:
iMac, OS X Mavericks (10.9.4), 4 GB RAM, Win XP Pro-Boot Camp
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Feb 26, 2008
I have a Dual 2.7 GHz PowerPC G5, 1.5 GB ram OSX 10.4.11, And My Main goal is to Create a recordable Drive for my pro tools to save sessions on.I asked Digi Design how to do This, and they told me to Reformat my Fat32 to MAC-OS extended. It is Read/write capable currently... But everytime I try and Change the Format using Disk utility it says, Could not unmount disk. How else can i reformat my External hardrive?
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May 11, 2012
How do I reformat a USB external drive with two partitions one of which is corrupted.
Disk Utility will not work because the faulty partition prevents unmounting of the disk.
Info:
MacBook Air, Mac OS X (10.7.4), Macbook Air bought August 2011
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Sep 6, 2014
I have 3 macs, Macbook Pro, iMac 27" and iMac 20". The drive shows up on the Macbook Pro and the 27" but when I plug it into any of the USB ports on the 20" I get nothing. Nothing in the disk utility, nothing on the desktop and nothing in finder. I have already tried PRAM and SMC resets with no change in status.
iMac 20" - 10.9.4
iMac 27" - 10.9.4
MacBook Pro - 10.6.8
Info:
iMac (27-inch Mid 2011), OS X Mavericks (10.9.4)
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Aug 22, 2014
I would like to install os x Yosemite public Beta 2, since I have only one external hard drive and that one is my time machine, I made two partitions of it, one is backup and second for Yosemite.
Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.4)
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Mar 24, 2012
How do I reformat an external hard disc, before used as time machine?
Info:
MacBook Air, Mac OS X (10.6.8), Freecom hard disc
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Feb 3, 2009
I recently tried to install a back-up copy of Leopard onto a USB hard drive, as a precautionary measure if my drive ever did die. I had partitioned my drive into 3. One for the Leopard Boot (Mac OS Extended Journaled), one for Apps (Mac OS Extended Journaled) and one for files (FAT 32).
The installation pooped out on me, probably due to the amount of free space available.
Earlier this week, I decided to reformat the drive into 1 partition. Unfortunately I ran into a spot of bother....
Click for full size - Uploaded with plasq's Skitch
And when running First Aid - I get this:
Click for full size - Uploaded with plasq's Skitch
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May 11, 2010
I plan on buying a new MBP this week and I am going to sell my old macbook to a friend of a friend. I seemed to have misplaced my Snow Leopard discs somewhere and was wondering if I could use the new disks with my new computer to reformat my drive? If not, are there any other options short of paying $30 to re-buy SL for this machine?
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Jun 1, 2014
I have used a Samsung HX 1Tb external hard drive under OSX Snow Leopard with absolutely no problem. Since I upgraded to the free (improved?!?) OSX Mavericks my Macbook Pro cannot "see" my hard drive. All I get when I plug it in is the following message -
my MacBook thinks that the hard drive is formatted for windows - but why should it work OK under Snow Leopard but not with Mavericks? I don't want to simply reformat the external drive because I'll lose all the files stored on it.Is there suitable software/Apps that I can use to let my Mac access this external hard drive.Incidentally my partners new Macbook Air can still read this hard drive.
Info:
MacBook Pro (15-inch Mid 2010), OS X Mavericks (10.9.3)
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Jun 28, 2014
How do I format an external hard drive?
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