zero7404 Author

Level 3

816 points

corrupted partition table, need help fixing

Hello (Loner T),

I have an issue with my partition table and need to rebuild it. Would you please assist ?

Output of:

sudo gdisk /dev/disk0

GPT fdisk (gdisk) version 1.0.4

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:

MBR: protective

BSD: not present

APM: not present

GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): P

Disk /dev/disk0: 490234752 sectors, 233.8 GiB

Sector size (logical): 512 bytes

Disk identifier (GUID): 57ECCA5D-3ED3-4ECC-B8F8-568B5DF9C6D0

Partition table holds up to 128 entries

Main partition table begins at sector 2 and ends at sector 33

First usable sector is 34, last usable sector is 490234718

Partitions will be aligned on 8-sector boundaries

Total free space is 4035 sectors (2.0 MiB)

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

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 195858431 93.2 GiB AF0A

3 195858432 469830561 130.6 GiB 0700 Basic data partition

4 469831680 470835199 490.0 MiB 2700

5 470837248 490233855 9.2 GiB AF00 Apple HFS/HFS+

Output of:

sudo gpt -r show /dev/disk0

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 195448792 2 GPT part - 7C3457EF-0000-11AA-AA11-00306543ECAC

195858432 273972130 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

469830562 1118

469831680 1003520 4 GPT part - DE94BBA4-06D1-4D40-A16A-BFD50179D6AC

470835200 2048

470837248 19396608 5 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

490233856 863

490234719 32 Sec GPT table

490234751 1 Sec GPT header

MacBook Pro Retina

Posted on Aug 26, 2019 9:01 PM

Similar questions

49 replies

Loner T

Level 9

59,536 points

Sep 2, 2019 8:15 AM in response to zero7404

zero7404 wrote:

do you think there is a possibility that my recovery partition is corrupted ?

Recovery will fall back to Internet. Your Single-Use Mode is also suspect.

if so, can that be corrected by doing a reinstall of macOS from external drive ?

In-place re-installation modifies macOS files. Non-macOS files are preserved, unless you choose to erase the destination partition.

i think a reinstall would preserve my apps and data.

Yes.

my model is 11,2 ... the model i wanted to buy (aura N) supports bootcamp with this model i believe.

Macbook Airs have a lot of issues with third-party SSDs. I suggest ensuring you have a working installation of both OSes, otherwise you should return the SSD.

Loner T

Level 9

59,536 points

Sep 4, 2019 4:28 AM in response to zero7404

zero7404 wrote:

i have a late 2013 15" mbp, my model is 11,2. don't have an mb air.

boot into mojave from the ssd, create my share hfs+ partition

Once you create the Share partition, BC Assistant will no longer function properly. You will have to install Windows manually.

that should leave me with a clean GPT and no abnormalities with the partitions, correct ?

Yes.

Loner T

Level 9

59,536 points

Aug 27, 2019 5:51 PM in response to zero7404

Does Windows boot and work properly?

zero7404 Author

Level 3

816 points

Aug 27, 2019 6:12 PM in response to Loner T

yes it does

zero7404 Author

Level 3

816 points

Aug 28, 2019 6:00 AM in response to Loner T

i do have a backup, yes.

my model is an 11,2 late 2013 mbp

zero7404 Author

Level 3

816 points

Aug 29, 2019 2:30 PM in response to Loner T

The BIOS mode is UEFI, excerpt of some lines from msinfo32:

BIOS Version/Date Apple Inc. 157.0.0.0.0, 7/24/2019

SMBIOS Version 2.4

BIOS Mode UEFI

Loner T

Level 9

59,536 points

Aug 30, 2019 3:42 PM in response to zero7404

I think we should leave WinRE alone. If you do run into any issues in the future, post back, and we can try to cleanup. Please maintain good backups of your shared and OS partition.

zero7404 Author

Level 3

816 points

Aug 30, 2019 4:54 PM in response to Loner T

i have backups of everything.

ready to proceed.

Loner T

Level 9

59,536 points

Aug 31, 2019 4:34 PM in response to zero7404

Can you post the output of

mount -v

zero7404 Author

Level 3

816 points

Sep 1, 2019 1:37 PM in response to Loner T

im not really having much success with this ... tried issuing a few commands:

zero7404 Author

Level 3

816 points

Sep 1, 2019 4:15 PM in response to Loner T

not working ...

Loner T

Level 9

59,536 points

Sep 1, 2019 4:21 PM in response to zero7404

Run

umount /

and post the output.

zero7404 Author

Level 3

816 points

Sep 1, 2019 4:47 PM in response to Loner T

if its going to be this difficult fixing the fsroot tree error, is this really worth it ?

Loner T

Level 9

59,536 points

Sep 2, 2019 7:48 AM in response to zero7404

zero7404 wrote:

i used COMMAND + R, i did not think that was internet recovery ... just regular recovery.

Local Recovery falls back to Internet Recovery, if corrupted.

either way, i think its best to start clean. i could use extra space so i might go with an owc ssd.

OWC SSDs for specific models do not support Bootcamp. Be careful!

my apologies for consuming your time, and thank you for the help i greatly appreciate it.

NP. Post back if you run into any further issues.

Loner T

Level 9

59,536 points

Aug 27, 2019 4:05 AM in response to zero7404

Can you post the output of

diskutil list

You seem to have a Windows RE(covery) and a 9Gb HFS+ partition. How was the 9GB partition created?

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corrupted partition table, need help fixing