Hardware :: Can Add A Partition To A Disk Without Wiping The Data On It
Feb 13, 2009
I currently have a 750GB HFS+ disk (system) which has about 300GB of data on it. I want to add 2 partitions to it - ideally without having to copy everything off, wiping it, adding the new partition setup and copying everything back.I seem to remember there was a utility that did this - or am I imagining it?Also, the 2 partitions I want to add are PC partitions - so my disk will end up looking something like...
465GB HFS+
200GB NTFS
32GB FAT 32If I can do this, what is the best way to format these partitions in these PC formats?And what is the best way of cloning my current PC partitions (on a different disk) and copying them over to the new PC partitions that I will be adding to my system disk?
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Aug 21, 2014
I recently received an iMac as a "gift"... turns out it has some problems. I am unable to reinstall the default OS (Mountain Lion) because I have yet to be able to partition the HDD correctly. The error I keep getting is: Partition failed with the error: Wiping volume data to prevent future accidental probing failed.At this point, the default Macintosh HD isn't showing, so it must of been erased/deleted.
Info:
iMac
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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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May 21, 2008
My Powerbook will be sold so i want to make certain that the new owner will not be able to get his hands on my data files if he tries to use a recovery application. What is the best way to make data i have on my power book to not be recoverable?
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Mar 12, 2012
How do I wipe clean the mac book pro of data so that I can give it away ?
Info:
MacBook (13-inch Aluminum Late 2008), Mac OS X (10.5.8)
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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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Jul 5, 2009
I am selling my Macbook Pro and need to wipe all my personal data off of it. I gave the guy buying it the option of me cleaning it out and leaving the applications and essentials on it or just putting in my install disk and wiping it all together. I was wondering if there was a simple way to ensure that my data is off of it (I've done tax returns on it, personal photos, etc...) without clearing data he is just going to have to put right back on it (Firefox, Photoshop, etc...)I thought I could create a new admin account and delete my user account but I just want to be sure that is enough and I couldn't find a solid answer searching the forums. This is the first time I've had to create a new post and haven't just found it by searching, I know how much we all hate repetitive threads.
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Apr 4, 2010
I'm getting ready to sell my old Powerbook G4 so booted up from the installation CD, and ran Disk Utility to do a 8 Way Random Write pass on the Mac hard drive before I did a clean install (the disc is Mac OS X 10.3.7).
I selected the top option in the drive panel of Disk Utility (the one saying 92.2GB Hitatchi blablabla) rather than the indented disk beneath it.
All went fine doing the overwrite, however it seems to have become stuck on "Creating Partition Map" - it's been like that for half a day now. Any thoughts? Should I have chosen the indented drive underneath the main description?
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Jan 7, 2010
I have an '05 mac mini (pre-intel chip) with OS X 10.4 that while trying to transfer a file to an external hard drive gave me a blue screen (that wouldn't go away). After a hard shut down, I get to the apple and spinning wheel but nothing else happens.
My goal is to get to my files on the mini and put them on an external drive (specifically my itunes folder)
Is there some other way to repair this? I have 17 GB left on the main hard drive. Could I partition it and create a new bootable drive without wiping out the data in the original drive?
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Jan 12, 2010
First some background info. I recently purchased a 1TB hard drive for my 13" MBP, and I am about to do a clean install of OSX 10.6 and Win7 64bit on separate partitions.
And I want to setup the partitions before I install using Disk Utility. The reason for this is because I'm under the assumption that when creating a NTFS partition its better for the disk to be blank so it can put the MFT(Master file table) and MFT Mirror wherever it wants instead of some random spot on the disk (that way disk writes will be faster). The MFT thing was true when converting a FAT32 disk to NTFS. Nativity formatted NTFS disks were always faster then ones converted from FAT32, because the MFT was spread out instead of at the start of the disk.
I'm worried that installing OSX and then using the bootcamp utility will cause the MFT on my NTFS partition to end up in a un-optimal place and disk Reads/Writes will be slower.
Ok, so here's my questions.
1.) Should I be using a GUID Partition Table or Master Boot Record(Remember OSX 10.6 and Win7)?
2.) Should I use Disk Utility to Create a the OSX partition and then leave the second partition as Free Space? / Or should I use a third party utility and make the OSX partition and the NTFS partition at the same time?
3.) If I do create the partitions Manualy, will bootcamp still work correctly?
4.) Should I Use Journaled or Case-Sensitive Journaled on my OSX partition?
I know all of the questions were stupid, but there isn't any info on the web about it.
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Sep 7, 2010
Got my first MacBook Pro about 2 months ago and I have been enjoying it to full effect, installing programs such as logic studio and photoshop cs5 on it. Recently, however, I decided that I would like to access some of my windows based programs when I am on the road and don't have my desktop pc with me. So I bought a fresh copy of 32-bit Windows 7 Ultimate and sat at my macbook, put the disc in and then loaded up Boot Camp. I went through the menu options, decided that I wanted a 50GB partition, leaving my Mac OS drive at 182 GB with 83GB to spare. However, when I started partitioning, after about a minute it stopped and this error message appeared: "The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.".
I tried cleaning all my temporary files and deleting some files in my downloads that were quite large and I restarted my machine. The problem persisted. Is there a solution to this problem that does not involve doing all this rubbish with a fresh install of Mac OS? I don't have any method of backup apart from a couple of 4GB flash drives..
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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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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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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 6, 2012
I have run the Disk Utility verify function against my system partition. It tells me there are minor issues that need fixing up and I should run the repair disk function, by booting using Command-R and using the Disk Utility to repair the drive.Problem is, when I boot using Command-R and select Disk Utility the partition is shown greyed out and the Verify and Repair options do not work.I think this could be because the partition is encrypted. The utility does not offer me the chance to unlock the partition with my passphrase.How can I repair the filesystem errors on this partition?
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Aug 3, 2010
One of my drives is showing issues that Disk Utility isn't catching or can't find. I've heard about Diskwarrior, iDefrag, Drive Genius, etc... but which one is the most comprehensive, is there a "best of breed" disk app out there or one that does more than the others?
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Sep 8, 2010
My new 2010 hexacore Mac will have 24G memory, an OWC Extreme Pro 120G SSD (positioned in the lower optical bay) and four 2TB WD RE4 drives. I'll use my old Synology 209 NAS (two 1TB WD Green Raid 1 drives) for TM backups over 1000Mbps Ethernet. Yes, I'll need to upgrade to a larger NAS very soon. This will be my first Mac Pro (have MBPs and iMac) and will be used for web design and development (mostly Adobe CS5 products).
The SSD will be used for boot and application files. I plan to use Disk Utility to create a 1+0 Raid array for data files. For a Scratch disk, should I:
1) create a partition on the 1+0 Raid Array for Scratch
2) partition a chunk of the SSD for Scratch
3) attach a spare external 2.5" WD drive via Firewire 800 for Scratch
Based on my reading, it seems that option 1 makes the most sense but I'm not entirely sure if you can partition a 1+0 array with Disk Utility. I'm pretty sure option 3 is quite silly but wanted to toss out the idea. Lastly, are there any generic recommendations on scratch volume sizing?
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Nov 20, 2009
I have a 640GB external USB hard drive that I use for time machine currently. I would like to go in and add a partition to load movies to and plug it into my PS3. Can I use disk utility to create a new partition without erasing the stuff already on the disk?
And then is it possible to format a partition larger than 32GB as FAT?
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May 6, 2012
I have a MacBook Air with solid state hard drive. The Disk Utility partition tool shows that "This partition cannot be modified". What can I do?
Info:
MacBook Air, Mac OS X (10.6.8), Total Capacity : 121.33 GB (121,332
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Feb 21, 2009
I tried searching the boards already but I didn't get a clear answer I was looking for.
So I have an external harddrive with data already on (it takes up only 40% of the harddrive). Now, I want to partition the harddrive and use the new partition for a Time Machine backup of my Mac.
Now, here's the question; would I be able to delete the Time Machine partition in the future and still leave the external harddrive's data (the original 40% of data I had in the first partition?
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Jul 1, 2010
I have a Mac Pro 1,1 (2007) with the Apple RAID Card and 3 500GB drives in RAID 5. This leaves a total of about 1TB space, which [for historical reasons] is split into two 500GB partitions - one with the OS and home directories, the other with project data. I just received an additional 500GB drive matching the 3 already present, which I intend to add to the array -- bringing the total space available to 1.5 TB. Since I need to backup and restore the filesystem to expand the array, this is the perfect opportunity to revisit my partitioning scheme.
The problem with the current scheme is that I often find myself in the situation where I am working on a project, and one partition is full, but the other has plenty of space - so I end up wasting a lot of time moving files from partition to partition to get things done. So no matter what, I know that I want to combine the home directories and project data on one large partition. The question is should I have:
1) A separate small partition for the OS and a large one for everything else?
2) One giant partition for everything?
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Dec 19, 2008
I haven a MBP and a Western Digital 500gb Hd formatted in FAT32. Now what i want to do is partition a 100gig of that FAT32 space into Mac OSX Extended, so I can copy files larger than 4gb. These 100gb are free but on the rest of the HD is data. Is it possible to partion it without losing my 300gb of data.
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Oct 17, 2010
As I was trying to install Arch Linux on my Mac (dual-booting), I accidentally deleted my Mac partition! To add insult to injury, the version of linux I downloaded was the wrong one, so I couldn't even have that. I reintalled Mac 10.5 (I have the 10.6 cd, just haven't reinstalled that one yet), and now I want desperately to recover from the old partition.
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Jul 5, 2009
I know there are already a ton of threads like this one out there, I was just getting a lot of conflicting data from them, and didn't really want to screw this up... Well here's the problem.My HDD is currently divided into two partitions, I am trying to shrink the 2nd partition, and expand the 1st without losing the data on my 2nd partition. Is this Possible?
I've tried VolumeWorks 1.5 from a bootable DVD but for some reason when I open it and select my hard drive, the left column where a list of my partitions should be is blank, and all the buttons on the bottom are blanked out except "close" and "rebuild".
I was going to try booting from CD and running disk utility to accomplish this, but most of the stuff I've read says that shrinking a partition with DU will erase the data. ?
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Aug 8, 2010
OS X 10.6, 2 USB hard disks (magnetic, not SSDs), Data Rescue 3.
I used Data Rescue to clone a dying 120GB hard disk with a single partition to a healthy 500GB hard disk. The healthy disk now just reads as a 500GB hard disk with a SINGLE 120GB partition, as expected. I then aimed a deep scan at the 120GB PARTITION on the 500GB drive.
Question: Could the scan have picked up files that had been previously deleted on the healthy 500GB disk, WHICH WOULD CURRENTLY RESIDE OFF THE NEW RECOVERED PARTITION?
The reason I ask if because I don't want to mix files recovered from the dying hard disk with my own files that I previously may have had on the healthy 500GB disk.
Another quick question: are partitions continuous on a disk, or can they be on sectors physically scattered around the disk?
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Jun 24, 2012
I would like to partition my internal 750GB HD into two parts. One for Media, and one for the OS and applications.
Is this possible without data loss? If so How? Should I clone my Macbook, reinstal the OS, and partition, then move media into the partition?
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Jan 20, 2008
i have an external drive that's 1TB that i use for all sorts of things but Time Machine as well.having read that the time machine backup tends to increase over time i'd like to make a partition for it, just like others have done in topics i've read.
the question is this,can i make a sub-partition of, say 100GB using disk utility or something but not lose data from my drive?
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Jan 20, 2009
I recently partitioned my harddrive for windows xp to be installed with bootcamp but now I would rather run VMware fusion. I haven't yet backed up my hard drive. Is there anyway to return to previous settings without losing it all? I have a lot of stuff on my computer is why I ask. Also, if I made a backup of my computer now, will that not work because I am doing so with a partitioned drive?
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Sep 30, 2009
So not even a year into owning my shiny MBP 15.4, the OSX partition crashed and I lost everything. Lesson learned, I need to buy a nice external HD to backup my stuff. So here are my questions for you guys. What is a nice portable small external HD... one I don't need to plug into the wall and the computer, pref around 320GB. Also I am going to freshly install OSX 10.6 so I think its time to go from 2GB to 4GB, what is the best RAM for my MBP 15.4 2.4GHz Unibody and where should I pick that up from?
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Jul 12, 2010
So I tried to install XP on my MacBook Pro via Boot Camp and it didn't go so well. To make a long story short, my OSX partition and Windows partition were both deleted so I re-installed OSX. When I went to re-intall OSX I could not choose a HDD to install it on, so thinking it was the right idea I created a new partition and continued the installation. After installation everything seemed fine so I went to restore from time machine, which I did. The only problem is I now have 100 GB of data on my computer, but it apparently doesn't exist as I can't see, or access any of it.
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