Q: I have to go in to single-user mode to boot in OS X.

Sorry, but can you give me a more detailed information on what you mean by "freeze the disk"?

Ok, I did fsck AND /sbin/fsck -y. I did both for about 5-6 times. Here are the result:

** /dev/rdlsk2

** Root file system    

    Executing fsck_hfs (version hfs-304).

** Checking Journaled HFS Plus volume.

    The volume name is Macintosh HD

** Checking extents overflow file.

    Invalid node structure

(4, 20639)

** The volume Macintosh HD could not be verified completely.

localhost:/ root# pcl pause: SDXC

There is a small pause after "** Checking extents overflow file."

After I did these commands, I typed "reboot" and the same thing happened. Computer shuts down when the progress bar gets to 3/4.

I then entered these commands again, after doing it for 4-5 times I typed "/sbin/mount -uw /" and then "reboot" and same thing happens. Computer shuts down at 3/4 of the way on the progress bar. But If I type "exit" after typing in "/sbin/mount -uw /" then I will get in to OS X.

Please help, I don't want to keep changing between Bootcamp Windows and Mac OS X while having to go to single-user mode to type these commands: "/sbin/mount -uw" and "exit" just to get in to OS X.

Mike Sombrio wrote:

 

I think you're going to need a utility more robust than Disk Utility. Disk Warrior should fix it http://www.alsoft.com/DiskWarrior/

Alright, I am going to try it out.

Thank you Mike.

DwaynXD wrote:

 

Mike Sombrio wrote:

 

I think you're going to need a utility more robust than Disk Utility. Disk Warrior should fix it http://www.alsoft.com/DiskWarrior/

Alright, I am going to try it out.

 

Thank you Mike.

Never mind, I didn't realize it was a paid software. I don't think I will be spending money on this. And I don't know 100% if it will work.

LexSchellings wrote:

 

First of all: you do the fsck thing again and again until it says "the disk seems to be OK", otherwise the filesystem is not fully repaired.

(I thought it is fsck -fy  not  fsck -y)

I have no experience with disk warrior, it has no conclusive support here in a lot of threads.

Oops, I typed fsck -y but I was meant to type fsck -fy. I will try doing this command a bunch of times.

Loner T wrote:

 

Disk Information: (What does this mean?)

    APPLE HDD ST1000DM003 disk1 : (1 TB) (Rotational)

        EFI (disk1s1) <not mounted> : 210 MB

        Recovery HD (disk1s3) <not mounted>  [Recovery]: 650 MB

        Bootcamp (disk1s4) /Volumes/Bootcamp : 300.00 GB (120.62 GB free)

        Macintosh HD (disk2) / : 811.83 GB (454.27 GB free)

            Core Storage: disk0s2 120.99 GB Online

            Core Storage: disk1s2 699.35 GB Online

 

    APPLE SSD SM128E disk0 : (121.33 GB) (Solid State - TRIM: Yes)

        EFI (disk0s1) <not mounted> : 210 MB

        Boot OS X (disk0s3) <not mounted> : 134 MB

        Macintosh HD (disk2) / : 811.83 GB (454.27 GB free)

            Core Storage: disk0s2 120.99 GB Online

            Core Storage: disk1s2 699.35 GB Online

 

You have a 1TB Fusion drive. Can you post the output of the following OSX Terminal commands?

 

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo gpt -vv -r show /dev/disk1

sudo fdisk /dev/disk0

sudo fdisk /dev/disk1

diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *121.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage Macintosh HD            121.0 GB   disk0s2

   3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

/dev/disk1 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *1.0 TB     disk1

   1:                        EFI EFI                     209.7 MB   disk1s1

   2:          Apple_CoreStorage Macintosh HD            699.3 GB   disk1s2

   3:                 Apple_Boot Recovery HD             650.1 MB   disk1s3

   4:       Microsoft Basic Data Bootcamp                300.0 GB   disk1s4

/dev/disk2 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +811.8 GB   disk2

                                 Logical Volume on disk0s2, disk1s2

                                 CFBF0A67-BEA2-4568-8525-D061082F80BB

                                 Unencrypted Fusion Drive

diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group B54D51B8-E3A9-45FA-A5D5-56B9E142A27B

    =========================================================

    Name:         Macintosh HD

    Status:       Online

    Size:         820333879296 B (820.3 GB)

    Free Space:   229376 B (229.4 KB)

    |

    +-< Physical Volume 325382BD-0466-46A3-942A-8D0840AFD59A

    |   ----------------------------------------------------

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     120988852224 B (121.0 GB)

    |

    +-< Physical Volume 98A67476-2B6F-4B02-A932-0F49766E517C

    |   ----------------------------------------------------

    |   Index:    1

    |   Disk:     disk1s2

    |   Status:   Online

    |   Size:     699345027072 B (699.3 GB)

    |

    +-> Logical Volume Family F6E67D0A-4299-4B51-B2C0-4DD780137D67

        ----------------------------------------------------------

        Encryption Type:         None

        |

        +-> Logical Volume CFBF0A67-BEA2-4568-8525-D061082F80BB

            ---------------------------------------------------

            Disk:                  disk2

            Status:                Online

            Size (Total):          811826282496 B (811.8 GB)

            Revertible:            No

            LV Name:               Macintosh HD

            Volume Name:           Macintosh HD

            Content Hint:          Apple_HFS

            LVG Type:              Fusion, Sparse

sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 236978175

      start       size  index  contents

          0          1         PMBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6        

         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

     409640  236306352      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  236715992     262144      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  236978136          7        

  236978143         32         Sec GPT table

  236978175          1         Sec GPT header

sudo gpt -vv -r show /dev/disk1

gpt show: /dev/disk1: mediasize=1000204886016; sectorsize=512; blocks=1953525168

gpt show: /dev/disk1: Suspicious MBR at sector 0

gpt show: /dev/disk1: Pri GPT at sector 1

gpt show: error: bogus map

gpt show: unable to open device '/dev/disk1': Undefined error: 0

sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 14751/255/63 [236978176 sectors]

Signature: 0xAA55

         Starting       Ending

#: id  cyl  hd sec -  cyl  hd sec [     start -       size]

------------------------------------------------------------------------

1: EE 1023 254  63 - 1023 254  63 [         1 -  236978175] <Unknown ID>

2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

4: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

sudo fdisk /dev/disk1

Disk: /dev/disk1 geometry: 121601/255/63 [1953525168 sectors]

Signature: 0xAA55

         Starting       Ending

#: id  cyl  hd sec -  cyl  hd sec [     start -       size]

------------------------------------------------------------------------

1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>

2: AC 1023 254  63 - 1023 254  63 [    409640 - 1365908256] <Unknown ID>

3: AB 1023 254  63 - 1023 254  63 [1366317896 -    1269760] Darwin Boot

*4: 07 1023 254  63 - 1023 254  63 [1367588864 -  585013248] HPFS/QNX/AUX