OS X :: Unable To Partition My Current Hard Disk

Feb 23, 2009

I am trying to partition my current HardDrive so I can run a Macintosh on half of it. The other half will of coarse be windows. I've tried programs like BasiliskII and SoftMac, neither work.

I grabbed some spare 10.4 disks I had, and my computer refused to read them. So I got my hands on a different set of 10.4 install disks and my computer still refused to read them.

I am trying to do this because it's a project for my Computer Hardware class. I've spent way too much time on this without any progress.

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OS X :: Unable To Partition External Hard Disk - How To Fix It

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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OS X V10.7 Lion :: Disk Utility Can't Repair Disk (1 Partition) On External Hard Drive

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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MacBook :: Unable To Locate My Hard Drive / Unable To Rename Or Create Partition

Jan 7, 2009

After my macbook hard drive kindly failed on me, I ordered a new Seagate Momentus 5400.5, 320gb hard drive. I popped that sucker in this afternoon and began to start up my macbook with the OS X disc 1. Everything was going smoothly, except that it can't find the hard drive. It is recognized under my disk utility, but when I click to partition it, select options, select GUID, click 'OK', I can neither Name it 'Macintosh HD' or do anything else.

I can't proceed with anything because when it asks me to select a HD, the HD does not show up. Again, everything works except that the hard drive is not found. I pulled the hard drive out. Made sure the screws were alright. Made sure everything was all snuggly, and yet it still won't work.

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OS X :: Unable To Create The Necessary Partition In Disk Utility

Nov 19, 2009

I have a Mac Mini and on the internal drive I have Snow Leopard installed on the first partition and I'd like to install Snow Leopard Server on the same drive on another partition (I'm new to Mac, this is my only machine and my only drive, and this is only for testing purposes, so don't bother with stupid questions about why etc).

The problem I have is that I can't seem to create the necessary partition in Disk Utility. I have shrinken the Snow Leopard partition to get some free space and I've created a second partition for Server but for some reason I can't choose the options button to select GUID. The button is grayed out, see attached image.

What am I doing wrong? Or is it not possible to have two OS partitions on the same internal drive?

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OS X :: Hard Disk Partition Strategy With Appropriate Size

Jun 11, 2009

I have a Mac mini with a 55 G internal hard drive with a 750 G One Touch Maxtor drive (actually just 698 G) attached via firewire. Later this month I'll be upgrading from Tiger to Leopard, and I'm assuming a clean install makes most sense. I'd like to partition the Maxtor drive to provide general storage as well as Time Machine backups. Although it's not vitally important, I could envision having a partition to handle Windows. Should I create three partitions: one for approx 55 G to handle the current contents of my internal drive for the upgrade; one for approx ?? G to handle potential Windows; and the remaining space to handle Time Machine.

- How large should a Windows partition be? There are some apps that would be useful to have, but highly unlikely it will be an important part of my routine. Should I be stingy? Can I get a Windows install in about 10 G? 20 G?
- Can I partition the Maxtor while it has data? Currently there is about 25 G of files. Many are expendable.
- Disk Utility seems to default to PPC settings, though the mini has an Intel processor. I'll want a GUID Partition Table for at least one partition, correct?
- Does it make sense to install Leopard on an external partition in case the internal drive ever fails? Or is that a waste of space for now? (One assumes I'd be able to rescue the machine via the install disks.)
- I suppose everyone's experience with Time Machine is different based on how they use their computers, but is there a rough guideline on how much space to devote to Time Machine?

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OS X :: Hard Drive Partition / Disk Image

Nov 17, 2009

I want to partition my hard drive so I can run BootCamp, and my PowerBook is giving me the following message: The Disk Cannot be Partitioned because Some Files Cannot be Moved. So I'm assuming I need to format the whole thing and then partition with BootCamp. Totally open to other ideas, but, assuming I move forward with that, is the best was to save user settings, current Applications, data stored on the drive, etc. to create a disk image on an external drive? I've done that, but I'm sort of unclear on what I do with the disk image after I've wiped the drive and partitioned it up.

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Mac Pro :: How To Delete A Partition / And Make New One On Hard Disk

Nov 30, 2014

On my Mac Pro  I don't know how to delete a partition and make a new one on a  hard disk.I used disc utility to initialize the partition, but it doesn't show any chance to delete or change the partition i created

Info:
Mac Pro, Mac OS X (10.6.8)

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OS X :: Unable;e To Boot From Internal Hard Drive / Use Disk Warrior To Repair Disk?

Apr 11, 2010

I am considering purchasing diskwarrior but want to make sure it can help my situation before I purchase it. My imac will not boot from the internal hard drive (Intel processor) When I use disk utility to try and repair the disk, I get error messages and it won't repair. I can see the HD but cannot repair it. When I connect using target mode with my mac book pro, the hard drive does not appear on my host (macbook pro) computer. I have reloaded OS X (Leopard) onto a firewire external drive and can boot my imac that way but I can not find my original internal Macintosh HD. Will disk warrior be able to help with this scenario. I would really like to access that internal Macintosh HD and retrieve my files.

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MacBook Pro :: Unable To Check External Hard Disk / Cannot Find The Disk

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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OS X :: Disk Utility Partition Erased Hard Drive?

Nov 12, 2009

I was making a partition on my USB external drive in order to put a disk image of Snow Leopard on it, so I could boot off of it.

I added a 10GB partition to the drive, and clicked Apply. The following dialogue box came up:

Partitioning this disk will change some of the volumes. No volumes will be erased.

This volume will be added:
"Snow Leopard"

This volume will be resized:
"XXX HDD"

I clicked Partition, and it finished very quickly. I checked Finder, and the entire drive, BOTH partitions are completely empty.

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OS X :: Resizing Hard Disk Partition Without Losing Data?

Feb 28, 2010

I would never opened a topic like this if I had not a similar experience with expanding 'dmg' in the past!
A truly bad experience! It is supposed that using 'disk utility' I can resize-expand-make bigger any dmg file. Every time I tried it, it was a totally fail process.The 'disk image' dmg did not resized at all.
I do not know why, it just happened to me many times.

Does anyone had similar experience? Any solution to this? So if I have a dmg that need to be bigger, I create a new one from scratch and I copy paste files from the old dmg.I need to do the same with hard disk partitions, using disk utility once again. I need to resize my hard disk partitions.Does this process works well as it should be, or it is a bad-implemented feature?

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IMac :: Partition Hard Disk / Any Side Effects?

Mar 31, 2010

I know it may sounds stupid to ask, I am thinking of partitioning my 500GB hard disk to 200GB and 300GB, with the 300GB holding the OS. Is it a good idea? Have anyone done it before? Any unwanted effects?

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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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Windows On Mac :: Unable To Mount Partition - Grayed Out In Disk Utility

Dec 26, 2010

I can boot into bootcamp with no problems. I have been wanting to be able to open the bootcamp in Parallels. Here is the issue:

1. The partition 'disk0s3' is greyed out in Disk Utility. It is not mounted. Mounting does nothing.

2. For reference, the Windows 7 is formatted as NTFS. It is a Windows 7 64-bit install

3. Verify disk does the following:
Verifying volume "disk0s3" ** /dev/disk0s3
Invalid BS_jmpBoot in boot block: efbbbf
Error: This disk needs to be repaired. Click Repair Disk.

4. repairing does the following:
Verify and Repair volume "disk0s3" ** /dev/disk0s3
Invalid BS_jmpBoot in boot block: efbbbf
Volume repair complete.Updating boot support partitions for the volume as required.Error: 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.

I have stuff on the Windows partition that I don't want deleted. I'm really stuck on this -obviously, I can just continue to boot into bootcamp, I just would rather open it from Parallels. I'm not sure what or if I made some mistake in setting up Bootcamp, I thought I followed the directions to that. I do know I formatted the partition as NTFS during the install - as I think Windows 7 requires it. I have tried installing NTFS-3G - it is installed, but didn't do any good when trying to mount the drive.

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OS X :: Unable To Partition Hard Drive

Jun 30, 2010

I just bought a new Western Digital 750GB laptop drive for my 13" macbook pro. I have a transcend external enclosure, to hook it up as an external via usb, and I had planned on using CCC to clone my existing 250gb to the new drive, and then swapping them.

However, at first plugging the drive in, my MBP didn't see it at all. The lights came on, and the drive sounded like it started... but it didn't appear in disk utility.

I unscrewed it from the enclosure, and then re-attached everything, and the 2nd time around, this time my MBP saw the drive. So it's possible (I guess) that something wasn't fully connected in the enclosure.

My first action was to open disk utility and try to partition the drive. But when I chose the "1 partition" route, I got an error when it attempted to unmount the drive, and wouldn't let me continue. So I then opted to "erase" the drive, and it did that no problem.

Then I did a "verify" on the disk, and it again reported no problem. So just for giggles, I then attempted to "partition" the drive again, and voila, same error.

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OS X V10.7 Lion :: How To Partition Mac Hard Drive If Startup Disk Is Full

May 16, 2012

how do i partition my mac hard drive if my startup disk is full and i have more space

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OS X Mavericks :: Hard Disk Partition / File System Cannot Be Read

Jun 20, 2014

When I try to partition my hard disk, Disk Utility tells me that the file system cannot be read.

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Mac Pro :: External Hard Drive Seen In Disk Utility But Partition Won't Mount?

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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OS X :: Unable To Remove Time Machine Partition / This Startup Disk Is Not Supported

Sep 22, 2010

I had my hard drive partitioned via bootcamp to run windows vista. I use software at work that isn't supported by Mac (it is now, but our version is old and it costs 10k to upgrade yada yada yada). One night I was playing around with the time machine feature (had the macbook for three years now never touched it, wish i hadn't) and accidentally told the time machine to use the partition made by bootcamp for windows to back up my mac. Well this messed everything up. Now that partition is gone (windows) and that volume is now called time machine backups. I have used some threads in here to try and remove that and nothing seems to work (most of the threads are from 2007 to 2008).

What I need help with is removing that time machine volume so that I can run bootcamp again to reinstall windows. When I attempt to run bootcamp right now it says "This startup disk is not supported." When I restart and hold option only the mac hd is available to choose. I also use(d) VMware Fusion to run Windows.

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Applications :: Can't Modify External Hard Drive Partition With Disk Utility

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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OS X :: Partition Disappeared After Transferring Data / System Not Detecting Hard Disk

Sep 1, 2009

Ok so here it goes.

The situation I'm in is pretty akward and it's quite a long story but I'll try my best to explain everything.This afternoon I went to a friend's house to transfer some data to my external hard drive (MyBook Studio).Since my HD is formatted as HFS+ and my mate owns a Windows PC, I'd asked him to install MacDrive.

When we plugged in my HD, Windows just didn't detect it. We tried all sorts of things, including rebooting.. but nothing seemed to help. No matter what we did. The damn thing just didn't detect my hard drive. Not even with MacDrive.

I desperately wanted to transfer some data to my HD since I'd drove quite a while to get there. So after a bit of Google research we decided to create a partition. My HD has a capacity of 1 TB and only about half of it was being used.So we went on and created a NTFS partition of 400 GB. Now Windows could detect the partition we'd just made.

Everything went fine, we could now transfer some data to my HD.Nevertheless.. when I got home and connected my HD to my Macbook Pro, Finder could only see the partition which we formatted as NTFS. The other 600 GB, which we hadn't touched.. is nowhere to be found.

There's quite a lot of important data on there so I would really appreciate it if anyone could help me.

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Applications :: Disk Utility Won't Format Or Partition External Hard Drive

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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Applications :: Disk Utility - FAT32 Partition With Existing MAC External Hard Drive

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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MacBook Pro :: Modify(delete,paste) The Contents On The External Hard Disk That Has An NTFS Partition?

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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IMac :: 1TB Hard Drive (Seagate ST31000528AQ)/Unable To Shrink/partition?

Jul 23, 2010

So I tried to partition my 1TB Seagate main hard drive that's in my iMac, and twice my iMac locked up at the "Shrinking volume" stage. I tried to shrink it down from 1TB to 600GB and it not only did not work, my system locked up (I gave it plenty of time) to the point where I had to forcibly shut it down and a subsequent verification of the disk revealed that it needed to be repaired using Disk Utility after restarting and booting from my OS X installation disk, which worked just fine.

I decided to try again, because the first time, I had not restarted the computer in a while, so I thought I'd "flush out" any temporary files, cache, inactive RAM, and whatever else might have been in the way the first time around. However, this time, the screen simply turned off after 15 or so minutes. Once again, it got stuck at the "Shrinking volume" point and there was also no way to revive it except for a forced shutdown, which, by the way, I did by holding down the power button on the back of the iMac. Same story, I had to restart and repair the disk using my OS X installation disk, which resolved the repair issue.

One more thing. I remember that when I first received my iMac, I was able to partition the drive in order to add a volume for Boot Camp, which I formatted in NTFS right before my Windows 7 installation. All of that worked great and I was actually impressed with how flawless that whole process executed. Eventually, I decided that I no longer needed Windows 7, so I erased the partition and re-consolidated it with the main OS X partition, again, without any problems.

With all of that said, I'm not sure what to try next, but I would really like to create 2 additional volumes. I thought I would try using Disk Utility again, but this time, booting from my OS X installation disk. Then again I didn't want to chance it again, as I have not made any backups yet. I'm in the process of making a backup right now.

So what do you guys think? Should I try to do just that, using Disk Utility after booting into the installation disk? What do you guys think is the reason as to why I can't just resize and partition using Disk Utility after a regular boot-up like I was able to before? What else could I try? Any third-party software titles like I used in Windows? Acronis and Partition Manager come to mind. I'd rather do it in OS X, though.

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OS X Mavericks :: Disk Utility Crashed Whilst Creating Partition And Now Missing Hard Drive Space

Jun 3, 2014

Disk Utility Crashed whilst creating a Partition, and I now have ~100GB missing, which was the amount I had allocated to the new partition.

The new partition didn't get created, and I now have 100GB missing from the Hard drive. I have a 1TB hard drive, and when I go to Disk Utility, it says:  Capacity : 999.35 GB (999,345,127,424 Bytes)Available : 586.1 GB (586,103,844,864 Bytes)Used : 310.52 GB (310,524,317,696 Bytes) 

Which adds up to about ~900GB.

I tried Repairing Disk in Disk Utility, booting into Recovery Mode and Repairing Disk there, but neither made a difference. 

Info:
MacBook Pro (15-inch Mid 2012), OS X Mavericks (10.9.3)

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Intel Mac :: Partition Failure Used Up Space On Current Drive

Apr 22, 2012

I tried to partition my main drive and it failed, however it is now saying that 200 gb of space on my main drive is used up. The partition was only for 100 and I have no idea what happened.

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OS X :: USB Boot Unable To Show Hard Disk

Jan 3, 2011

I've created a Snow Leopard boot disk using this method link. I created it on a 16GB CF Disk. I've tried it twice. First time I formatted the disk as eXfat with 1 partition. Next time I used Mac OS Extended for a 7Gig partition and fat32 for the rest.

Upon boot I get the normal install stuff like I do with the DVD, but then no hard disk shows up. I thought it was because of the eXfat which is why I tried again. I looked into the system profiler and I can see my seagate hard disk, but under disk utility it doesn't exist. My Sata DVD drive shows up though. If I boot off of the DVD I can see and install to my hard disk.

I'm trying to make a USB Disk because I'm planning on getting a SSD and I will be removing the Dvd drive.

This is a Mid 2009 Macbook.

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Mac Pro :: Unable To Know About Hard Disk Activity Noise?

May 10, 2009

I usually just turn off my monitor at night but for some reason, the HD constantly makes spinning noise even then the computer hasn't been used for hours ( i don't run time machine ).

Is there any way to tell what process is causing this stupid HD activity? My previous Dell machine was so much more quiet than this POS. I prefer not having to explicitly put the machine the sleep every time.

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