IMac (Intel) :: Disk Utility Can't Format USB Drive
Aug 22, 2014
I've got a Transcend 8GB usb drive and i want to erase everything on it but i can't. I know that the best way to do this is the Disk Utility (Because Finder can't erase them too. When I drag and drop to the bin, it says "43 files cannot be deleted")
When i attempt to format, this message appears from disk utility: and also, another message appears at the same time.I just wanted to format my disk. But i can still see the content in the disk. But can't copy them to desktop.
Info:
iMac, Mac OS X (10.6.8), iMac G5 from 2005, but it's intel.
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Mar 26, 2009
Despite the dire warnings about the Seagate drives that I read all over the place, I decided to buy this drive. Dell had a great price of $129 with free shipping.
It is going to supplement existing storage capabilities as a secondary backup so I'm covered if the drive does experience any of the problems that others have experienced. So far the drive is running great. I have copied nearly 800GB of data to it with no issues. I have the drive connected to an AEBS. I have been able to stream movies from the drive with no problems. It looks like Seagate has resolved the firmware issues that have plagued the drive in the past.
My only issue was that it was a bit of a pain to reformat the drive. For some reason disk utility would not format the drive until I created and then deleted two partitions.
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Aug 19, 2009
I've got an external drive (320GB) that I'm trying to format as FAT32 using Disk Utility, then create a large (as in, most of the drive) HFS partition.
The problem is that no matter what I do, it will only format the drive as Mac Journaled. It lets me select other options (Mac, FAT32) and goes through the process with no errors or warnings, but when I click on the drive it remains Journaled with a partition of whatever I just selected.
I am sure beyond the shadow of a doubt that I am selecting the drive itself, not the partition, when formatting. This is extremely frustrating. Google searches aren't turning up any clues and I don't know what to do.
I have other external drives formatted as FAT32 with a large Mac partition so I know it's possible.
I need to do this so I can mount the drive on a Windows machine.
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Jul 23, 2010
I'm selling a hard drive that doesn't work when formatted for Mac so I need to sell it PC format. Will MS-DOS (FAT) work, and does it need to be set to Master Boot Record?
I have a PC I can test it on but I just want to now what to do before I try it out so I don't keep having to switch between computers.
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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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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 9, 2010
I have 43GB available on a 120GB drive on my MacBook base model and I'm trying to partition via BootCamp.I'm trying to allocate 32GB to the Windows partition but I keep getting the following error message: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've backed up my disk and launched disk utility, and try to follow above directions here but the Mac OS Extended (Journaled) area is grayed out and when I click apply after highlighting the MacBook are (in blue), it errors out and says the disk is out of space.
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Apr 30, 2009
I am having an issue Partitioning my Internal HDD because some files cannot be moved it was able to Partition a while back when Installed Vista but I deleted that Partition as I needed a bigger one for Windows 7 Beta It says I need to "Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume." does that mean I have to reformat my entire HDD? as I don't want to do that.
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Dec 2, 2009
I have a problem with Disk Utility , when trying to format an external fire wire drive.
I cleaned out the drive and proceeded to erase it with zeros. After this Disk utility will not display the subdirectory or verify, repair, partition, erase the disk. The main disk name is still visible, but I cant access any functions.
Error message says input output error.
DiskWarrior will not help, as the original directory is beyond recovery.
I suppose that I have damaged the original directory, and now I would ask the honourable forum if there is any remedy for my actions?
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Nov 2, 2010
so i got this message "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." what do I do
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May 7, 2010
I have an external hard drive that I'm planning to use for my iTunes Music library, however, I plan to access the hard drive from both my Mac and Windows PC.
Now I know I could format it as FAT32 (MS-Dos Format) in Disk Utility, however, from my understanding, this wont allow files larger than 4GB ... which could be a problem in future.
If I were to format it as the Mac Journal extended format, would I still be able to read and write to this from my Windows PC? Any ideas, or other work arounds for this?
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Jun 30, 2014
I have an 8gb SecureLock Media memory stick and I cant write to it its currently formatted to FAT32 and was working perfectly fine before, it allows my to drag files of it but i cannot write to it, I can't reformat in disk utility.
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May 7, 2012
I had to power off my iMac by Pressing the power key and holding it several times over the last few weeks. The last time it wouldn't reboot - I'd just get an apple icon. When I tried a safe boot I'd get the icon and it would change to a no entry sign.Next I started up from the snow leopard installation disk with the intent of repairing the iMac disk. The installation disk worked but when I opened disk utility it only found the installation disk. It didn't find the iMac disk.
Info:iMac, Mac OS X (10.6.5)
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May 21, 2009
I'm trying to format my external harddrive with disk utility to Mac OS Extended (Journaled) but it keeps coming up with this error.
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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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Apr 17, 2012
I want to Clone videos from my SD Card quickly without having to download the entire card while filming..
Info:
iMac, Mac OS X (10.7.3)
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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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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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Feb 22, 2010
I ran installer then went to disk utility and pushed disk repair. it ran and indicated in green that no repairs were necessary. i then went to startup disk and only the Diks and network startup showed up but no hard drive. i also open computer to make sure was not wet muddy due to leak in cooling system but all was dry
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Apr 1, 2012
I'm experiencing some problems with my iMac right now, and I'm not sure how they started or what to do to correct them.
1) Computer seems to hang up from time to time while starting applications, or in the middle of some tasks. There's no rhyme or reason or any patterns.
Question: Is there anything I should try to clean up the computer?
2) About a week ago I started using Time Machine to do scheduled backups rather than me manually starting my own backups. Now whenever time machine does a back up, it seems to stop working somewhere in the "Preparing to Backup" stage, and I end up needing to restart the computer manually because the whole system becomes useless. It will no longer complete any backups, even when I start manually.
Question: Why would time machine now all of the sudden start freezing in the middle of the prep to backup stage?
3) I just tried to use my disk utility to check and see if I need to repair the disk and here is what reported back:
Info:
20" iMac, Mac OS X (10.5.8), 2.4 GHz Intel Core 2 Duo
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Jun 17, 2009
I was working in windows using mac drive last night and I opened a dmg which I found out later was corrupted. It didn't open in windows, and windows hung to the point that I had to do a hard restart. Once everything booted back up (it took forever, btw), I found that one of my HFS drives (not the one I was working on at the time, oddly enough) had disappeared from both windows and osx. I cannot see the actual drive in device manager or disk utility, and things like diskwarrior and data recovery 2 don't see it either. I know it sounds like the hard drive failed, but is it possible that a software crash could cause the physical drive to completely fail?
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May 14, 2012
My disk utility is telling me the disk needs repair, when I try to do the reset to start the repair it doesn't work, and my machine seems to be slowing down.
Info:
iMac, Mac OS X (10.7.4)
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Jan 7, 2009
I have an USB external HD attached to Time Capsule. Trying to find out how one can use diskutil to do a verifyVolume on this drive. I tried something like: diskutil verifyVolume /Volumes/myDrive but it didn't work. The command is (naturally) ok with an USB external HD attached to the USB port on the Mac itself.
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Feb 13, 2009
I'm fairly Technical, I just can't seem to figure this one out. I own a 13 Inch Macbook with the stock 120 GB HD. It was purchased this past September 2008. I bought a new HD from Newegg. Here is the link to the HD. [URL]
I read the reviews, and more than 20 reviews I read said this HD worked perfectly in their Macbook.
-So I received the HD yesterday
-I put it inside my laptop
-I put in the OSX install CD
-I powered up and held down C and booted into OSX Installer
-From the menu I selected Disk Utility but the hard drive does not show up as listed hard drives
After all attempts failed, I put the disk in my windows machine as an extra sata drive, and it booted perfectly fine, so I know the disk is ok. Some other thoughts?
-The difference between the stock and new HD is size and also 1.5 GB vs 3.0 GB Transer rate
-Does my Macbook need a firmware upgrade - I doubt this, but just a thought
-Does the Macbook not recognize unformatted disks - I doubt this too.
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May 13, 2009
I have heard or read somewhere on this forum that you can use Disk Utility to Duplicate your internal hard drive to another drive, how can you do this.
I have the stock 320GB 5400 RPM drive and I want to put in my 320GB 7200RPM with 16MB Cache, but I would rather not load and reload all the software, so how can I move the data from Stock to the new drive.
I already partitioned using GUID and erased the new 320GB drive in an external enclosure which is where the drive is sitting now connected via USB to my MINI.
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May 18, 2009
I have a USB key and would like to format it under NTFS, under Disk Utility, there isn't that option. I don't really have time to google this, does someone know what to do? Is there a console command to do?
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Aug 5, 2009
I ordered a second hard drive for my powermac g5.Its a 400 gig seagate drive.I power off my machine,unhooked everything and plugged in the drive.
I boot up and the drive isnt showing in disk utility.Is it something i did?
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Nov 7, 2009
i just erased my external hard drive through disk utility my accident. I had VERY important files and the 1tb was full.
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Dec 11, 2009
I've got an 8GB Sony Micro Vault Pen Drive that's stopped working. When I opened up Disk Utility it appears but doesn't give me the option to erase.
Can I try doing it with anything else before I bin it and buy a new one.
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Jan 4, 2010
I am going away traveling and need to back up all my stuff off of my mac for the first time.. (pics, music etc the usual). I brought a WD Elements 500GB External Hard Drive and when I plug it into my mac book (OSx) it appears in finder, and the desktop but I can't drag and drop nothing into it. Apparently I have to format it! So have researched about formatting it, but I don't have "Disk Utility" in my utilities? My Mac was given to me from a friend second hand so i don't have the disks etc to get it. Any other way of formatting my Hard drive or a link to download disk utilities or any alternatives!
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