MacBook Pro :: Format Only One Partition On External Hard Disk?
Sep 12, 2014
I have partitioned my external Hard drive into three different partitions, each of different formats. Two partitions for backing up my macbooks and one to copy to and from my windows PC. I would just like to know if in any way is it possible for me to be able to re-partition one of the partitions, without affecting my Time machine partitions, in case the need be in future.
Info:
MacBook Pro, OS X Mavericks (10.9.4)
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Apr 18, 2010
The hard drive is a 1TB Western Digital my book I bought it in January I think. I tried to format it to Mac OS Extended (Journaled) when I got it but for some reason every time I try to erase the part thats named disk3s2 or partition the main one it stops a little before half way through. I don't think its the hard drives fault so I called apple about it one day and they helped a little but it didn't work. Thanks in advance if you can help me. Also a few times I waited about seven hours for it while I was at school and when I came home it didn't move.
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Nov 5, 2009
I'm running Snow Leopard on my new Macbook Pro. I've got a 1.5TB External hard drive that I'm trying to figure out how to format in HFS+ with Apple Partition Map. I can figure out how to format in HFS using Disk Utility, however it still does it in GUID format and I do not know how to do it in Apple Partition Map.
Googleing this for hours has lead with all kinds of information on how to go to GUID FROM Apple Partition Map but not the other way around. I know GUID is the new hottness.. but this drive will be used exclusively to connect to my XBOX 360 and it supposedly only reads HFS+ when its formatted with Apple Partition Map. (I have tried it with Mac OS Extended (Journaled) with GUID, and the XBOX does NOT recognize it) I do not want to use Fat 32, (I know that that is the other major option) beacuse it limits file size.
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Apr 28, 2012
I have format an External Hard disk for Mac. Can you advise how to format back to FAT32 format for Window
Info:
MacBook
Pro, Mac OS X (10.7.3)
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Aug 28, 2014
How do i format an external hard disk for my Mac Book Pro
Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.4)
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Nov 2, 2010
i'd like to format my lacie external hard drive with two partitions:
1. HFS+ partition as a bootable clone of my internal drive
2. FAT32 partition readable by any windows (and mac) machine
i'm creating my partitions with disk utility, but i hit a snag when choosing a partition scheme...apparently i cannot choose a different scheme for each partition.
so when i format the drive with GUID, the FAT32 partition is not even recognized by windows XP. but when i format the drive with master boot record (MBR), the HFS+ partition is not bootable...
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Apr 24, 2012
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.
Info:
iMac, Mac OS X (10.7.3)
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Feb 15, 2011
I have an external multimedia disk currently formated in NTFS microsoft format. I'd like to be able to copy content to it from my Mac and a PC so I thought to format it in FAT 32. can anyone tell me if there is a size limit to FAT32. what are the major limitations of FAT 32 vs NTFS
Information:
MACBOOK
Mac OS X (10.5.4)
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Mar 18, 2012
How can i modify(delete,paste) the contents on the external hard disk that has an NTFS partition?
Info:
MacBook
Pro, Mac OS X (10.7.3)
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Sep 28, 2009
My intention is to partition an external HD in half allowing it to serve as a backup for a pc running windows xp, and the other half as a backup for a mac(10.5. I am using a Seagate external HD(new) that was initially partitioned on a windows xp computer.
The 1st half of the 1TB HD was formatted in NTFS format, and the second half was erased and (I thought) reformatted in HFS plus but when I attempt to use CCC(Carbon Copy) to copy the mac 1/2 of the hard drive, I get this message:
"You may have difficulty booting from this target volume, the underlying disk is not formatted with a partitioning scheme that Apple recommends for Intel Macs."
I have read the recommendations that the external HD need to be partitioned with APM or GPT, but I cannot seem to get to that option now for the mac side of the external HD.
In the Disk Utility, the external HD shows both sections of the partitioned drive(the xp section and the leopard). I do not want to reformat the entire drive(both sections) if at all possible.
I just want the Mac side of the ext drive to be properly prepared for CCC, and the windows side to remain as is.
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Mar 24, 2009
I received an Acomdata 2Tb external hard drive today from Amazon and plugged it in. Time Machine popped up and I declined to link the hard drive to it. I went into Disk Utility and chose the new hard drive on the left column and went to erase. I chose Mac OS Extended. I named it and hit erase. It started going, and going..... and going... and a half an hour later I knew something was wrong.
Disk Utility was not responding and I eventually had to Force Quit. Now I cannot format the hard drive. I starts and then it stops with a disk error. I tried to run the First Aid verify and repair and both stopped after a few seconds with an error. What do I do?
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Sep 2, 2014
I've been running a Toshiba 1TB external drive on my Mac Pro tower and it's been working fine. But yesterday it wouldn't mount. I could see the drive in Disc Utility, but the partition wouldn't mount. I brought it into work where I'm running an iMac and it mounted just fine. Why would it stop working on one computer (where it was previously fine) yet work okay on another? And how do I get it working on the tower?
Info:
Mac Pro, iOS 7.1.2
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Jan 7, 2011
I have an external 750GB hard drive that I previously formatted as FAT 32 because I wanted to be able to plug it into Windows computers as well. I was not very thoughtful at the beginning and I just created one big 750GB partition. I currently have 450GB used and about 300GB free.
I would like to create a new partition in the free space without losing the data I have in the disk, and format the new partition as Mac OS Extended to use it for Time Machine backups. Presumably Disk Utility can do it, but when I go to the "Partition" tab it says "This partition cannot be modified" and the "+" sign below it is grayed.
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Oct 9, 2010
I had windows vista installed but suddenly the audio decided to become faulty, after spending a day trying to fix it i realized I have a windows 7 install disc so i might as well just replace vista with windows 7. I didnt take care of vista or ever register it so it became quite a task to upgrade so i just deleted the partition and went to create a new one and just do a full install of windows 7.
I made the partition but the wrong format, so i removed it through boot camp assistant and created another, except now it keeps giving me the "back up the disk and use disk utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using boot camp assistant again" Now, I'd love to do this, except I have no idea what I'm doing and WHY this error has occured. After becoming frustrated I switched from my imac to my macbook pro and received the same error when trying to create a partition. So any help on exactly what I need to do would be a HUGE help. I only use windows for music production (I know, seems backwards, but I use Sony Acid and FL Studio so I'm stuck with Windows)
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Jan 29, 2010
I have a 1/3 full external drive that is currently formatted for MAC OS External.
I want to partition the drive in half and use the 2nd partition for Windows FAT32.
However, when I try to do this with Disk Utility it does not give me the FAT32 option.
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Sep 27, 2010
I am trying to figure out how to partition my HD so that it can speak easily between a Windows formatted HD and Mac HD's without the Error Code -0 (meaning it won't transfer files larger than 4gb's from HD to HD. I use a Mac running Snow Leopard and I am formatting using Disk Utility. I have always done the MS-DOS (FAT) format but like I said I am getting the Error Code -0 and it's become more of a nuisance than anything.
My options are Mac OS Extended (Journaled), Mac OS Extended, Mac OS Extended (Case-Sensitive, Journaled), Mac OS Extended (Case-Sensitive), MS-DOS (FAT) and Free Space. Is it possible to get the best option explained to me in a way that's more understandable than from the research I have discovered. Also I know Finder has issues thus the reasoning for the 4gb limit. I have downloaded a 3rd party app Path Finder to allow me to bypass that limit except whenever I copy from one HD to another it disappears once the transfer is complete.
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Feb 5, 2009
I noticed in disc utility that under the erase tab it has the option to format a drive to fat32. If I create a windows partition using bootcamp and then go into disk utility and erase to fat32 will this allow a boot into the xp drive? My xp disc keeps restarting before it gives me the opportunity to format the drive to either a ntfs or a fat so I need a way around this?
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Dec 25, 2008
I am using this guide to get a new HD into my PS3: [URL:...] It says that the HD I back my PS3 up to needs to be formatted to FAT32. I have an external HD that I use with my mac, its partitioned into 4 parts. I have one partition which I don't use which I want to back my PS3 onto. In Disk Utility I select that partition and I only get 4 option under the Erase tab, 4 different Mac OS Extended options.
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Jul 19, 2009
I just ordered a 1 terabyte WD external drive, and I'm planning on creating one partition for music/movie storage, and a second smaller partition for a superduper clone. So my first question is, what format should each partition be in? I'd like the movies/music partition to be Windows compatible...will choosing FAT32 make any difference in my use of this partition when used with my OSX machine, and what benefits would I see by using Extended Journaled instead? Then, what format do I want the Superduper backup partition to be? Finally, when I initially format and partition the external drive, is there anything I should do to prepare it first, or just go right ahead, divide it in two (approx. 650gigs for music/movies, the rest for superduper) and then format each partition on its own into the formats they need to be in? Also, do I use GUID partition format?
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Oct 24, 2008
I'm using an external drive through FireWire 400 on my MacBook Pro with 10.5.5. It's a 320GB with 22GB in "free space" and the rest formatted with HFS+ (used as a Time Machine backup drive). I want to setup that 22GB as a FAT32 partition to be writable in both Windows and Mac. Normally, it sounds like I'm supposed to use Disk Utility on Mac and just choose MS-DOS(FAT). Unfortunately, that choice is not presented. I can choose four different Mac-based file systems, but not FAT. Why doesn't that show up as a choice? I've tried leaving it as free space and using a PC to format it. I've tried formatting it as a Mac-based drive and using the PC to format. I've even tried installing MacDrive on the PC and using that to format it as FAT32.
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May 2, 2012
Verbatim Store 'n' Go USB 2.0 Portable Hard Drive 500Gb
this is a external hard drive i am looking to buy,but it has Nero back it up and burn software already on it,so in order for me to use it on my macbook,would i need to format it?
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Sep 8, 2014
How do I format a new (replacement) hard drive without a disk for a 2012 13" Mac Book Pro? I was running 10.7.5 Lion.
Info:
MacBook Pro (13-inch Late 2011), iOS 7, Just replaced a failed hard drive.
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Sep 7, 2009
Anyone knows why my external HD (USB disk connected to Airport extreme) does not show up in disk utility? (It sits on my desktop just fine and is fully functional) I' want to erase a partition but now i don't know how.
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Apr 1, 2012
Which is the best way to format external hard drive to be compatible with both Lion and windows, and at the same time support high data transfer?
Info:
MacBook Pro, Mac OS X (10.7.1)
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Apr 8, 2010
got a real basic question to ask and you're gonna think im an idiot for asking...I just bought a 320gb western digital elements hard drive and want to reformat it so that its compatible for both mac and pc's. i intend to format it as NTFS-3G as it would allow me to use it on the 2 platforms without having the 4GB file size restriction that fat32 has, anyway.....
when I go to reformat my external hard drive in disk utility, I see my external hard drive to the left, and there's a "sub" hard drive as a child of the external hd listed uppermost. just wandering which one of the two do i select before going to Erase>Windows NT filesystem (NTFS-3G)>erase? Do I select the uppermost drive and erase that or the lower one? or both
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Feb 15, 2011
I've download a Seagate Diagnostics programme to check whether my external Seagate FreeAgent Desk is working properly or not. However, when I run the programme, it indicates that cannot find the disk.
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Jun 27, 2014
I have a Seagate 1 TB Backup Plus Drive which was working perfectly fine until I plugged it into a USB hub. It detected it while in the hub and I was able to get files off of it, but when I ejected it from the hub and put it back into the USB slot on the computer it was not detected by finder. It shows up in the disk utility and I clicked verify and repair and it says:
Verify and Repair volume “Seagate Backup Plus Drive”
Checking file system
Volume repair complete.
Updating boot support partitions for the volume as required.
Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
Is there any way to get this to work properly again? Or if not is there a way for me to recover my files on the external hard drive?
I have a Macbook PRO late 2011 running OS X Mavericks.
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Jul 27, 2010
I just got my new Seagate 640gb external hard drive and am in the process of formatting it on my MBP. However, I am not sure which format to do? My main use for the hard drive is for transferring media files back and forth between my MBP and PC using just one partition on the drive. I already know I'm not supposed to pick 'Mac OS Extended (Journaled)' because I believe that is to use it as a boot drive. So should I pick 'Mac OS Extended' or maybe 'Free Space'?
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Jul 23, 2008
i have a 320gb external hard drive and was wondering if i could partition it so i could use it just as an external hard drive on one partition, but have time machine on the other partition. i just recently got my frist mac, which is a macbook, and i love it.
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Mar 25, 2006
i've installed a new Hard disk on My G5 that was before installed in a pc (NTFS), now i'm trying to format it in FAT32 in the Mac!! no way!! i don't know how!
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