Using Disk Utility From Recovery Partition

Is there an advantage to repairing permissions after booting into Recovery disk? (Hold Option key as restart) I realize that Repair disk will be available if needed & it is not available when using Disk Utility from Mac HD partition.

Thanks!
I thought that was the case but I had read multiple accounts of people with slow Macs after upgrading to Mavericks, running repair disk permissions from recovery disk to fix the problem.   I wondered why not just run repair permissions w/o restarting into recovery disk. Then they can also run verify disk, if they wish & only if there is a problem with the disk would they need to boot to recovery disk in order to run repair disk.

Similar Messages

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  • Disk Utility Fails When Partitioning FireWire Drive

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  • Trying to use Disk Utility on my iMac --

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    Message was edited by: DVDon3

    DVDon3 wrote:
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  • How can I repair my OS X Boot Disk without a Recovery Partition (Using Disk Utility)

    Hey there,
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  • After i bought mac os x lion from web then download , after that to install but when they ask me to choose disk to install i can not choose, it say this disk does not use the GUID partiton table scheme. use disk utility to change the partition scheme. but

    after i bought mac os x lion from web then download , after that to install but when they ask me to choose disk to install i can not choose, it say this disk does not use the GUID partiton table scheme. use disk utility to change the partition scheme. but

    after i bought mac os x lion from web then download , after that to install but when they ask me to choose disk to install i can not choose, it say this disk does not use the GUID partiton table scheme. use disk utility to change the partition scheme. but

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    Hi,
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    I also followed instruction and went through to run gdisk successfully. Results towards the end.
    What can be done? Windows still does not boot and It shows ? Suspicious MBR at sector 0.
    Below is information based on typical questions you ask.
    diskutil list
    /dev/disk0   #:                       TYPE NAME                    SIZE        IDENTIFIER
       0:              GUID_partition_scheme                        *120.0 GB     disk0
       1:                                           EFI                         209.7 MB     disk0s1
       2:                         Apple_HFS Macintosh HD            78.5 GB     disk0s2
       3:                       Apple_Boot Recovery HD             650.0 MB     disk0s3
       4:                   Microsoft Basic Data                         31.7 GB      disk0s4  
    sudo gpt -r -vv show disk0
    gpt show: disk0: mediasize=120034123776; sectorsize=512; blocks=234441648
    gpt show: disk0: Suspicious MBR at sector 0
    gpt show: disk0: Pri GPT at sector 1
    gpt show: disk0: Sec GPT at sector 234441647
          start       size            index       contents
              0          1                             MBR
              1          1                             Pri GPT header
              2         32                            Pri GPT table
             34          6        
             40     409600           1            GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
         409640  153240016      2            GPT part - 48465300-0000-11AA-AA11-00306543ECAC
      153649656    1269544     3            GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
      154919200   17628896        
      172548096   61892608    4            GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
      234440704        911        
      234441615         32                       Sec GPT table
      234441647          1                        Sec GPT header
    sudo fdisk /dev/disk0
    Disk: /dev/disk0 geometry: 14593/255/63 [234441648 sectors]Signature: 0xAA55
             Starting       Ending
    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
    1: EE    0   0   2 - 1023 254  63 [         1 -  172548095] <Unknown ID>
    *2: 07 1023 254  63 - 1023 254  63 [ 172548096 -   61892608] HPFS/QNX/AUX
    3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     
    4: 00    0   0   0 -    0   0   0 [         0 -          0] unused  
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    GPT fdisk (gdisk) version 0.8.7
    Warning: Devices opened with shared lock will not have their
    partition table automatically reloaded!
    Partition table scan:
      MBR: hybrid
      BSD: not present
      APM: not present
      GPT: present
    Found valid GPT with hybrid MBR; using GPT.
    Command (? for help): r
    Recovery/transformation command (? for help): h
    WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,
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    be untouched.
    Type from one to three GPT partition numbers, separated by spaces, to be
    added to the hybrid MBR, in sequence: 4
    Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y
    Creating entry for GPT partition #4 (MBR partition #2)
    Enter an MBR hex code (default 07):
    Set the bootable flag? (Y/N): y
    Unused partition space(s) found. Use one to protect more partitions? (Y/N): n
    Recovery/transformation command (? for help): o
    Disk size is 234441648 sectors (111.8 GiB)
    MBR disk identifier: "DELETED INFO"
    MBR partitions:
    Number  Boot  Start Sector   End Sector   Status      Code
       1                               1    172548095   primary     0xEE
       2           *     172548096    234440703   primary     0x07
    Recovery/transformation command (? for help): w
    Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
    PARTITIONS!!
    Do you want to proceed? (Y/N): y
    OK; writing new GUID partition table (GPT) to /dev/disk2.
    Warning: Devices opened with shared lock will not have their
    partition table automatically reloaded!
    Warning: The kernel may continue to use old or deleted partitions.
    You should reboot or remove the drive.
    The operation has completed successfully.

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    I wish to change partition scheme, sizes, in an external drive. All the partitions are MacOS extended (Journaled) and they map, according to the layout in Disk Utility, as follows: Partion 1, 2, 3,4 where 1 is at the top and 4, the bottom. I want to make partition 2 larger, so I decreased partition 1 by half. Now the layout is 1 a, 1b, 2,3,4., where 1b is now free space. Disk Utility will not allow me to increase the size of  partition 2 by dragging the corner. Which of the following options (if any) will allow me to increase the size of partition 2, without erasing the data, using Disk Utility:
    Select partition 2 and manually writing a new value in the size box, equal to the present partition’s size plus the free space?
    If I delete partition 1 completely, will I then be able to increase the size of partition 2?
    If I delete partitions 1, 3, and 4, will I then be allowed to increase the size of partion 2?
    Is there another option?
    Thanks
    (Actually, partition 3 is an eDrive, a data recovery utility created by TechTool Pro 7, so I don’t really know how it’s formatted.)
    OS10.9.4, MacBook Pro, SeagateHD 1.5TB USB drive.

    You cannot re-size the existing partitions in such a way that you can take the space from a shrunken partition and add it to another partition. Disk Utility cannot do that. If you have an existing partition that lives above another partition, then you can delete the lower partition in order to expand the upper partition into the freed up space. This concept applies to any additional partitions that are below another partition. Disk Utility can do this. You can resize down, but not up, except when creating new partitions. You would need third-party software such as iPartition 3.4.3 to accomplish that feat.

  • Using Disk Utility to partition drive

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    Hi, I have a hard disk failure so to recover my data I am using disk utility to restore the data on an external drive while booting from a second external hard drive. When I perform the operation and after having selected both my destination and source drives, the operation begins but soon fails due to input/output error. If I try to create an image of the drive it gives me the same error message. Any help would be much appreciated.

    Disk Utility only creates a image of the drive, so it's no help getting exactly what you want, which is your files. If the file structure is messed up or the drive is failing then it's no help.
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    Sounds like a mechanical problem with the drive and it ruined the sectors where the Macintosh HD partition (and OS X, and files and programs) reside, but not your Recovery HD partition.
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  • TS2570 Question re: "Start from your Mac OS X Install disc; use Disk Utility"

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