SHGD
Level 1 (8 points)
Mac OS X

Q: No partition possible for reinstallation of El Capitan

I have major problems on both OS X and win 7 (imac 2009).

The computer is unusable, especially the keyboard. This follows an update to El Capitan a couple of weeks ago.

 

The computer does not boot with any keys (keyboard problems), the only start up disk available is bootcamp, but OS X and recovery disks are visible on win 7 in bootcamp console.

I tried reinstalling El Capitan but no disks are available for partition, so i'm blocked (needs to be GUID which I don't have).

 

I have saved all files and would really like to restore systems. However, the dvd is not working (ejects) for both OSX installation DVD or win 7 iso burnt dvd.

I'm wondering if the this is repairable ? Thanks in adavnce for any advice.

iMac, OS X El Capitan (10.11.6)

Posted on Aug 29, 2016 1:16 AM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (23,603 points)
Safari
A:

Your GPT is invalid, and your MBR is very much out of order. You need GPT Fdisk to correct this. Let me know once you have it installed, and I can provide the exact steps to correct this. It will also address your Windows issues.

Posted on Sep 2, 2016 1:18 PM

Close
SHGD

Q: No partition possible for reinstallation of El Capitan

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  • Helpful answers

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  • by Loner T,

    Loner T Loner T Sep 2, 2016 2:27 PM in response to SHGD
    Level 7 (23,603 points)
    Safari
    Sep 2, 2016 2:27 PM in response to SHGD

    Yes, in Applications -> Utilities -> Terminal.

  • by SHGD,

    SHGD SHGD Sep 2, 2016 2:58 PM in response to SHGD
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 2:58 PM in response to SHGD

    Does this look normal, nothing seems to be happening

     

    Last login: Fri Sep  2 23:45:35 on console

    pc54:~ stuarthallett$ sudo gdisk /dev/disk0

    Password:

    GPT fdisk (gdisk) version 1.0.1

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    NOTE: Write test failed with error number 1. It will be impossible to save

    changes to this disk's partition table!

    You may need to deactivate System Integrity Protection to use this program. See

    https://www.quora.com/How-do-I-turn-off-the-rootless-in-OS-X-El-Capitan-10-11

    for more information.

     

    Caution! After loading partitions, the CRC doesn't check out!

    Warning! Main partition table CRC mismatch! Loaded backup partition table

    instead of main partition table!

     

    Warning! One or more CRCs don't match. You should repair the disk!

     

    Partition table scan:

      MBR: MBR only

      BSD: not present

      APM: not present

      GPT: damaged

     

    Found valid MBR and corrupt GPT. Which do you want to use? (Using the

    GPT MAY permit recovery of GPT data.)

    1 - MBR

    2 - GPT

    3 - Create blank GPT

     

    Your answer: O

     

    Command (? for help): x

     

    Expert command (? for help): l

    Enter the sector alignment value (1-65536, default = 2048): 1

     

    Expert command (? for help): m

     

    Command (? for help): n

    Partition number (5-128, default 5): 1

    Value out of range

    Partition number (5-128, default 5): 40

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409600

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: EF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 2

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409640

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1315481784

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: AF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 3

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 1315891424

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1269536

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: AB00

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: n

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 4

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 1317365760

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: +636155904

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 0700

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: p

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: w

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: y

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: q

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}:

    Current type is 'Apple HFS/HFS+'

    Hex code or GUID (L to show codes, Enter = AF00):

  • by Loner T,

    Loner T Loner T Sep 2, 2016 3:07 PM in response to SHGD
    Level 7 (23,603 points)
    Safari
    Sep 2, 2016 3:07 PM in response to SHGD

    SHGD wrote:

     

    Does this look normal, nothing seems to be happening

     

     

    Warning! One or more CRCs don't match. You should repair the disk!

     

    Partition table scan:

      MBR: MBR only

      BSD: not present

      APM: not present

      GPT: damaged

     

    Found valid MBR and corrupt GPT. Which do you want to use? (Using the

    GPT MAY permit recovery of GPT data.)

    1 - MBR

    2 - GPT

    3 - Create blank GPT

     

     

    You have a corrupted GPT. Use Control+C to quit Gdisk, run it again, and choose 2 - GPT. Post the output of the 'p' (print) command. It may be a little simpler to reuse what you already have in the GPT.

  • by SHGD,

    SHGD SHGD Sep 2, 2016 3:26 PM in response to Loner T
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 3:26 PM in response to Loner T

    I think i'm missing something here.

    Did it again but terminal stays open as not finished. IS THIS OK

     

    Last login: Sat Sep  3 00:06:54 on console

    pc54:~ stuarthallett$ sudo gdisk /dev/disk0

    Password:

    GPT fdisk (gdisk) version 1.0.1

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    NOTE: Write test failed with error number 1. It will be impossible to save

    changes to this disk's partition table!

    You may need to deactivate System Integrity Protection to use this program. See

    https://www.quora.com/How-do-I-turn-off-the-rootless-in-OS-X-El-Capitan-10-11

    for more information.

     

    Caution! After loading partitions, the CRC doesn't check out!

    Warning! Main partition table CRC mismatch! Loaded backup partition table

    instead of main partition table!

     

    Warning! One or more CRCs don't match. You should repair the disk!

     

    Partition table scan:

      MBR: MBR only

      BSD: not present

      APM: not present

      GPT: damaged

     

    Found valid MBR and corrupt GPT. Which do you want to use? (Using the

    GPT MAY permit recovery of GPT data.)

    1 - MBR

    2 - GPT

    3 - Create blank GPT

     

    Your answer: 2

     

    Command (? for help): x

     

    Expert command (? for help): l

    Enter the sector alignment value (1-65536, default = 2048): 1

     

    Expert command (? for help): m

     

    Command (? for help): n

    Partition number (5-128, default 5): 1

    Value out of range

    Partition number (5-128, default 5): 40

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409600

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: EF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 2

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409640

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1315481784

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: AF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 3

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 1315891424

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1269536

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: AB00

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: n

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 4

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 1317365760

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: +636155904

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 0700

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: p

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: w

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: y

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: q

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}:

    Current type is 'Apple HFS/HFS+'

    Hex code or GUID (L to show codes, Enter = AF00):

  • by Loner T,

    Loner T Loner T Sep 2, 2016 3:32 PM in response to SHGD
    Level 7 (23,603 points)
    Safari
    Sep 2, 2016 3:32 PM in response to SHGD

    SHGD wrote:

     

    I think i'm missing something here.

    Did it again but terminal stays open as not finished. IS THIS OK

     

    Last login: Sat Sep  3 00:06:54 on console

    pc54:~ stuarthallett$ sudo gdisk /dev/disk0

    Password:

    GPT fdisk (gdisk) version 1.0.1

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    NOTE: Write test failed with error number 1. It will be impossible to save

    changes to this disk's partition table!

    You may need to deactivate System Integrity Protection to use this program. See

    https://www.quora.com/How-do-I-turn-off-the-rootless-in-OS-X-El-Capitan-10-11

    for more information.

     

    Caution! After loading partitions, the CRC doesn't check out!

    Warning! Main partition table CRC mismatch! Loaded backup partition table

    instead of main partition table!

     

    Warning! One or more CRCs don't match. You should repair the disk!

     

    Partition table scan:

      MBR: MBR only

      BSD: not present

      APM: not present

      GPT: damaged

     

    Found valid MBR and corrupt GPT. Which do you want to use? (Using the

    GPT MAY permit recovery of GPT data.)

    1 - MBR

    2 - GPT

    3 - Create blank GPT

     

    Your answer: 2

     

    Command (? for help): p

    Please post the output. We may not need to go any further, if the information from 'p' looks correct.

  • by SHGD,

    SHGD SHGD Sep 2, 2016 3:37 PM in response to Loner T
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 3:37 PM in response to Loner T

    Caution! After loading partitions, the CRC doesn't check out!

    Warning! Main partition table CRC mismatch! Loaded backup partition table

    instead of main partition table!

     

    Warning! One or more CRCs don't match. You should repair the disk!

     

    Partition table scan:

      MBR: MBR only

      BSD: not present

      APM: not present

      GPT: damaged

     

    Found valid MBR and corrupt GPT. Which do you want to use? (Using the

    GPT MAY permit recovery of GPT data.)

    1 - MBR

    2 - GPT

    3 - Create blank GPT

     

    Your answer: 2

     

    Command (? for help): x

     

    Expert command (? for help): l

    Enter the sector alignment value (1-65536, default = 2048): 1

     

    Expert command (? for help): m

     

    Command (? for help): n

    Partition number (5-128, default 5): 1

    Value out of range

    Partition number (5-128, default 5): 40

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409600

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: EF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 2

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409640

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1315481784

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: AF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 3

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 1315891424

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1269536

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: AB00

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: n

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 4

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 1317365760

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: +636155904

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 0700

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: p

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: w

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: y

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: q

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}:

    Current type is 'Apple HFS/HFS+'

    Hex code or GUID (L to show codes, Enter = AF00):

    Changed type of partition to 'Apple HFS/HFS+'

     

    Command (? for help): L

    0700 Microsoft basic data  0c01 Microsoft reserved    2700 Windows RE         

    3000 ONIE boot             3001 ONIE config           3900 Plan 9             

    4100 PowerPC PReP boot     4200 Windows LDM data      4201 Windows LDM metadata

    4202 Windows Storage Spac  7501 IBM GPFS              7f00 ChromeOS kernel    

    7f01 ChromeOS root         7f02 ChromeOS reserved     8200 Linux swap         

    8300 Linux filesystem      8301 Linux reserved        8302 Linux /home        

    8303 Linux x86 root     8304 Linux x86-64 root (/  8305 Linux ARM64 root

    8306 Linux /srv            8307 Linux ARM32 root   8400 Intel Rapid Start  

    8e00 Linux LVM             a500 FreeBSD disklabel     a501 FreeBSD boot       

    a502 FreeBSD swap          a503 FreeBSD UFS           a504 FreeBSD ZFS        

    a505 FreeBSD Vinum/RAID    a580 Midnight BSD data     a581 Midnight BSD boot  

    a582 Midnight BSD swap     a583 Midnight BSD UFS      a584 Midnight BSD ZFS   

    a585 Midnight BSD Vinum    a600 OpenBSD disklabel     a800 Apple UFS          

    a901 NetBSD swap           a902 NetBSD FFS            a903 NetBSD LFS         

    a904 NetBSD concatenated   a905 NetBSD encrypted      a906 NetBSD RAID        

    ab00 Recovery HD           af00 Apple HFS/HFS+        af01 Apple RAID         

    af02 Apple RAID offline    af03 Apple label           af04 AppleTV recovery   

    af05 Apple Core Storage    bc00 Acronis Secure Zone   be00 Solaris boot       

    bf00 Solaris root          bf01 Solaris /usr & Mac Z  bf02 Solaris swap       

    bf03 Solaris backup        bf04 Solaris /var          bf05 Solaris /home      

    bf06 Solaris alternate se  bf07 Solaris Reserved 1    bf08 Solaris Reserved 2 

    Press the <Enter> key to see more codes: P

    bf09 Solaris Reserved 3    bf0a Solaris Reserved 4    bf0b Solaris Reserved 5 

    c001 HP-UX data            c002 HP-UX service         ea00 Freedesktop $BOOT  

    eb00 Haiku BFS             ed00 Sony system partitio  ed01 Lenovo system partit

    ef00 EFI System            ef01 MBR partition scheme  ef02 BIOS boot partition

    f800 Ceph OSD              f801 Ceph dm-crypt OSD     f802 Ceph journal       

    f803 Ceph dm-crypt journa  f804 Ceph disk in creatio  f805 Ceph dm-crypt disk i

    fb00 VMWare VMFS           fb01 VMWare reserved       fc00 VMWare kcore crash p

    fd00 Linux RAID           

     

    Command (? for help): P

    Disk /dev/disk0: 1953525168 sectors, 931.5 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 0000289E-72F6-0000-7866-000085630000

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 1953525134

    Partitions will be aligned on 1-sector boundaries

    Total free space is 1269542 sectors (619.9 MiB)

     

    Number  Start (sector)    End (sector)  Size       Code  Name

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640      1315891423   627.3 GiB   AF00  Customer

       3      1315891424      1317160959   619.9 MiB   AB00  Recovery HD

       4      1317160960      1317365759   100.0 MiB   0700  BOOTCAMP

      40      1318635296      1953525134   302.7 GiB   AF00  Apple HFS/HFS+

     

    Command (? for help):

  • by Loner T,

    Loner T Loner T Sep 2, 2016 3:51 PM in response to SHGD
    Level 7 (23,603 points)
    Safari
    Sep 2, 2016 3:51 PM in response to SHGD

    Your first three partition entries match. We are going to delete entry 40 and re-create it as entry 5 and check if there are any valid Windows files that you can see in Finder from the OSX side before we make further changes. Use the following commands at the prompt where you are on now.

     

    d (delete)

    40 (Entry 40)

    n (new)

    5 (Partition 5)

    1318635296 (Start)

    1953525134 (End)

    0700

    p

    w

    y

     

    Reboot and test OSX and check if you can see any Windows files in disk0s5.

  • by SHGD,

    SHGD SHGD Sep 2, 2016 4:00 PM in response to Loner T
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 4:00 PM in response to Loner T

    pc54:~ stuarthallett$ sudo gdisk /dev/disk0

    Password:

    GPT fdisk (gdisk) version 1.0.1

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    NOTE: Write test failed with error number 1. It will be impossible to save

    changes to this disk's partition table!

    You may need to deactivate System Integrity Protection to use this program. See

    https://www.quora.com/How-do-I-turn-off-the-rootless-in-OS-X-El-Capitan-10-11

    for more information.

     

    Caution! After loading partitions, the CRC doesn't check out!

    Warning! Main partition table CRC mismatch! Loaded backup partition table

    instead of main partition table!

     

    Warning! One or more CRCs don't match. You should repair the disk!

     

    Partition table scan:

      MBR: MBR only

      BSD: not present

      APM: not present

      GPT: damaged

     

    Found valid MBR and corrupt GPT. Which do you want to use? (Using the

    GPT MAY permit recovery of GPT data.)

    1 - MBR

    2 - GPT

    3 - Create blank GPT

     

    Your answer: 2

     

    Command (? for help): x

     

    Expert command (? for help): l

    Enter the sector alignment value (1-65536, default = 2048): 1

     

    Expert command (? for help): m

     

    Command (? for help): n

    Partition number (5-128, default 5): 1

    Value out of range

    Partition number (5-128, default 5): 40

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409600

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: EF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 2

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 409640

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1315481784

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: AF00

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: n

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 3

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 1315891424

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: +1269536

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: AB00

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: n

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 4

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 1317365760

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: +636155904

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 0700

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: p

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: w

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: y

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: q

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}:

    Current type is 'Apple HFS/HFS+'

    Hex code or GUID (L to show codes, Enter = AF00):

    Changed type of partition to 'Apple HFS/HFS+'

     

    Command (? for help): L

    0700 Microsoft basic data  0c01 Microsoft reserved    2700 Windows RE         

    3000 ONIE boot             3001 ONIE config           3900 Plan 9             

    4100 PowerPC PReP boot     4200 Windows LDM data      4201 Windows LDM metadata

    4202 Windows Storage Spac  7501 IBM GPFS              7f00 ChromeOS kernel    

    7f01 ChromeOS root         7f02 ChromeOS reserved     8200 Linux swap         

    8300 Linux filesystem      8301 Linux reserved        8302 Linux /home        

    8303 Linux x86 root     8304 Linux x86-64 root (/  8305 Linux ARM64 root

    8306 Linux /srv            8307 Linux ARM32 root   8400 Intel Rapid Start  

    8e00 Linux LVM             a500 FreeBSD disklabel     a501 FreeBSD boot       

    a502 FreeBSD swap          a503 FreeBSD UFS           a504 FreeBSD ZFS        

    a505 FreeBSD Vinum/RAID    a580 Midnight BSD data     a581 Midnight BSD boot  

    a582 Midnight BSD swap     a583 Midnight BSD UFS      a584 Midnight BSD ZFS   

    a585 Midnight BSD Vinum    a600 OpenBSD disklabel     a800 Apple UFS          

    a901 NetBSD swap           a902 NetBSD FFS            a903 NetBSD LFS         

    a904 NetBSD concatenated   a905 NetBSD encrypted      a906 NetBSD RAID        

    ab00 Recovery HD           af00 Apple HFS/HFS+        af01 Apple RAID         

    af02 Apple RAID offline    af03 Apple label           af04 AppleTV recovery   

    af05 Apple Core Storage    bc00 Acronis Secure Zone   be00 Solaris boot       

    bf00 Solaris root          bf01 Solaris /usr & Mac Z  bf02 Solaris swap       

    bf03 Solaris backup        bf04 Solaris /var          bf05 Solaris /home      

    bf06 Solaris alternate se  bf07 Solaris Reserved 1    bf08 Solaris Reserved 2 

    Press the <Enter> key to see more codes: P

    bf09 Solaris Reserved 3    bf0a Solaris Reserved 4    bf0b Solaris Reserved 5 

    c001 HP-UX data            c002 HP-UX service         ea00 Freedesktop $BOOT  

    eb00 Haiku BFS             ed00 Sony system partitio  ed01 Lenovo system partit

    ef00 EFI System            ef01 MBR partition scheme  ef02 BIOS boot partition

    f800 Ceph OSD              f801 Ceph dm-crypt OSD     f802 Ceph journal       

    f803 Ceph dm-crypt journa  f804 Ceph disk in creatio  f805 Ceph dm-crypt disk i

    fb00 VMWare VMFS           fb01 VMWare reserved       fc00 VMWare kcore crash p

    fd00 Linux RAID           

     

    Command (? for help): P

    Disk /dev/disk0: 1953525168 sectors, 931.5 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 0000289E-72F6-0000-7866-000085630000

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 1953525134

    Partitions will be aligned on 1-sector boundaries

    Total free space is 1269542 sectors (619.9 MiB)

     

    Number  Start (sector)    End (sector)  Size       Code  Name

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640      1315891423   627.3 GiB   AF00  Customer

       3      1315891424      1317160959   619.9 MiB   AB00  Recovery HD

       4      1317160960      1317365759   100.0 MiB   0700  BOOTCAMP

      40      1318635296      1953525134   302.7 GiB   AF00  Apple HFS/HFS+

     

    Command (? for help): d

    Partition number (1-40): 40

     

    Command (? for help): n

    Partition number (5-128, default 5): 5

    First sector (34-1953525134, default = 1317365760) or {+-}size{KMGTP}: 1318635296

    Last sector (1318635296-1953525134, default = 1953525134) or {+-}size{KMGTP}: 1953525134

    Current type is 'Apple HFS/HFS+'

    Hex code or GUID (L to show codes, Enter = AF00): 0700

    Changed type of partition to 'Microsoft basic data'

     

    Command (? for help): p

    Disk /dev/disk0: 1953525168 sectors, 931.5 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 0000289E-72F6-0000-7866-000085630000

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 1953525134

    Partitions will be aligned on 1-sector boundaries

    Total free space is 1269542 sectors (619.9 MiB)

     

    Number  Start (sector)    End (sector)  Size       Code  Name

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640      1315891423   627.3 GiB   AF00  Customer

       3      1315891424      1317160959   619.9 MiB   AB00  Recovery HD

       4      1317160960      1317365759   100.0 MiB   0700  BOOTCAMP

       5      1318635296      1953525134   302.7 GiB   0700  Microsoft basic data

     

    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/disk0.

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    Unable to open device '/dev/disk0' for writing! Errno is 1! Aborting write!

     

    Command (? for help): p

    Disk /dev/disk0: 1953525168 sectors, 931.5 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 0000289E-72F6-0000-7866-000085630000

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 1953525134

    Partitions will be aligned on 1-sector boundaries

    Total free space is 1269542 sectors (619.9 MiB)

     

    Number  Start (sector)    End (sector)  Size       Code  Name

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640      1315891423   627.3 GiB   AF00  Customer

       3      1315891424      1317160959   619.9 MiB   AB00  Recovery HD

       4      1317160960      1317365759   100.0 MiB   0700  BOOTCAMP

       5      1318635296      1953525134   302.7 GiB   0700  Microsoft basic data

     

    Command (? for help):

  • by Loner T,

    Loner T Loner T Sep 2, 2016 4:06 PM in response to SHGD
    Level 7 (23,603 points)
    Safari
    Sep 2, 2016 4:06 PM in response to SHGD

    NOTE: Write test failed with error number 1. It will be impossible to save

    changes to this disk's partition table!

    This is due System Integrity Protection implemented in El Capitan. Do you have a second Mac?

  • by SHGD,

    SHGD SHGD Sep 2, 2016 4:11 PM in response to Loner T
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 4:11 PM in response to Loner T

    unfortunately no ! is there another solution

  • by Loner T,

    Loner T Loner T Sep 2, 2016 4:14 PM in response to SHGD
    Level 7 (23,603 points)
    Safari
    Sep 2, 2016 4:14 PM in response to SHGD

    If you can boot into Windows, and install GPT Fdisk (it has a Windows version), we can correct the GPT from that OS. You download the Windows version from the same location as the OSX version.

  • by SHGD,

    SHGD SHGD Sep 2, 2016 4:15 PM in response to Loner T
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 4:15 PM in response to Loner T

    OK I'll try that, thanks

  • by SHGD,

    SHGD SHGD Sep 2, 2016 4:33 PM in response to SHGD
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 4:33 PM in response to SHGD

    I have downloaded GPT Fdisk on Windows. please tell me where to go and what next, many thanks

  • by Loner T,

    Loner T Loner T Sep 2, 2016 4:57 PM in response to SHGD
    Level 7 (23,603 points)
    Safari
    Sep 2, 2016 4:57 PM in response to SHGD

    In the screen shot(s), I have the GDisk binaries in the downloads folder on Windows. You will need to run gdisk64.exe from a Admin CMD window. 0: indicates the first disk to Gdisk in Windows. Here is an example window.

     

    W8.1-GPTFdisk.png

  • by SHGD,

    SHGD SHGD Sep 2, 2016 5:36 PM in response to Loner T
    Level 1 (8 points)
    Mac OS X
    Sep 2, 2016 5:36 PM in response to Loner T

    this is harder than mac, what do i type exactly ? I have the file gdisk available and the cmd window open

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