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The method to repair your disk and recover the GUID partition table is related to my answers to similar questions: HFS+ invalid number of allocation blocks and Hard drive no longer accessible. Basically you have to find characteristic strings of JHFS+ volumes, use some simple math and common sense and have some luck to fix the GUID. And don't loose sight of ...


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This basically is a repost of the following sites: get "appleSSD.sys" error when installing windows 7 through bootcamp and bootcamp - appleSSD.sys digital signature can not be verified Looks like there are problems with Boot Camp Support Software (BCSS) being downloaded from Apple. Here is a solution: Download an older version of the BCSS for your Mac. ...


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To free up space in your EFI partition, you would have to first mount it. This can be done using the command given below. Enter the command in a Terminal application windows. diskutil mount /dev/disk0s1 Below is an image of the entire contents of my EFI partition. I assume you can delete any folder and/or file other than what is shown below. (Actually, ...


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Take a look at Time Machine, it may be keeping local snapshots. From Apple Support: Because Time Machine removes local snapshots as needed, Finder and Get Info windows don't include them in their calculations. To see how much storage space local snapshots are using, choose About This Mac from the Apple menu, then click Storage. The space used by local ...


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While you could technically use dd to image a smaller partition onto a larger partition and it still show using the space of the smaller partition you'll not be able to resize the NTFS partition using Disk Utility. Also the GPT and PMBR will not be synced and that will need to be resolved. Windows 7 will also need to be reactivated. That said, using ...


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As a test, I formatted and external USB drive as exFAT (wrongly shown as ExFAT in Disk Utility) and then ascertained its UUID. Then ejected and unplugged the disk. I then added the following to my /etc/fstab file: UUID=402894E4-03EE-3CF7-80D2-A4EC74048C2F none exfat rw,noauto Note: Use the UUID assigned to the exFAT partition on your device. These ...


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I think all you need to do is rename the drive using Disk Utility to MacIntosh HD. Then reinstall to it.


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I actually figured it out myself. All I had to do was turn off FileVault and restart the system. Disk Utility works normally now.


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To interrupt the endless installation attempts you have to remove the temporary Yosemite installer folder and some invisible files in the root of your main volume. Boot to Recovery HD by pressing cmdR right after the start-up chime. Open Terminal from the menubar Utilities -> Terminal. cd to your main volume in the /Volumes folder with: cd ...


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It doesn't look like you need to erase anything. Would you mind rebooting to Recovery HD and re-running Disk Utility to repair the drive? If that works, try again and see if you can get an error from Console or system.log if it fails you again. I'll dig into where BootCamp might log the failure in the mean time.


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You most probably still have the disk partitioned in the GPT, but there are no partitions on the disk any more. This has happened to me twice when trying to remove the Boot Camp partition. You have to compare the output of diskutil list disk0 and sudo gpt show disk0 to see which partitions are still in the GPT, but are marked as unused. Then you'll have to ...


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Just a point on scratch drives - SSD's are not recommended for scratch (virtual memory) in 2015 for two reasons (there may be more) - SSD's don't enjoy constant overwrite and data swappping and it will reduce the life of an expensive drive. Using a clean partition set aside on an internal Sata drive such as a WD Black (with 64MB on board cache) will be more ...


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This post explains the procedure. Now is probably a good time to make a backup. Then proceed at your own risk... Get gdisk In Terminal: sudo gdisk /dev/disk0 Press v to verify your MBR Press r and then o to list the MBR partition table Press m and then p to display the GPT partition table information Compare the numbers for partition 4 from the MBR and GPT ...


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I had the same problem. You just need to reformat it again even though it shows 100% empty, just click format.


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It's not really wise to try repartition the disk you're booted from, so Disk Utility doesn't let you. You can boot from a USB key containing a recovery partition or a CD/DVD if your Mac is old enough to have a Superdrive.


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I realize you have posted your own answer, but others may want to know what was wrong. Basically, you had journaling turned off. To turn journaling on, you need to highlight the partition and click on the "Enable Journaling" button. To see the change, you may have to quit and reopen the Disk Utility application. To turn journaling off, do the following ...


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In your example, the command would be as shown below. ./install.sh --alldrivers --ownhfs /dev/disk0s5. I assume disk0s5 has been formatted "Mac OS Extended (Journaled)". I don't think I would use a 17.1 GB partition. The rEFInd partition on my Mac is 134 MB in size. If you need to write to disk0s5 while booted to Ubuntu, you may have to disable ...


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I had experienced the same problem after resetting my Macbook Air and then attempting to re-install W7 in Bootcamp. The default bootcamp assistant download returns an error message, so I had to download an older version which did boot the W7 desktop, but without drivers for sound and wifi. I did however have USB functionality, from this I was able to insert ...



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