repair bootcamp boot after partition modification

Hello

This solved the solution and bootcamp worked correctly again.

Now i have two windows partitions.

Thank you Loner For your support

For thos who have this issue further just did this one and it worked for me :

sudo gdisk /dev/disk0

x (experts menu)

n (create a new protective MBR and remove the Hybrid MBR)

o (print the new MBR)

p (print the partition table)

w (write)

y (confirm write)

Ok i see.

What if I remove all the disks data clean up the ssd' disk put a new Mac OS from last good time machine backup where the windows worked well.

Will it get it back working ?

Or boot partition will remain damaged again ?

Thank you

here is the output the write was aborted dont know why :

Django:~ wicemtrabelsi$ sudo gdisk /dev/disk0

Password:

GPT fdisk (gdisk) version 1.0.3

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.

Partition table scan:

MBR: hybrid

BSD: not present

APM: not present

GPT: present

Found valid GPT with hybrid MBR; using GPT.

Command (? for help): x

Expert command (? for help): n

Expert command (? for help): o

Disk size is 488552530 sectors (1.8 TiB)

MBR disk identifier: 0x00000000

MBR partitions:

Number
Boot
Start Sector
End Sector
Status Code

1 1 488552529
primary 0xEE

Expert command (? for help): p

Disk /dev/disk0: 488552530 sectors, 1.8 TiB

Sector size (logical): 4096 bytes

Disk identifier (GUID): B8ED0190-29E6-4A6C-A758-B741325BC715

Partition table holds up to 128 entries

Main partition table begins at sector 2 and ends at sector 5

First usable sector is 6, last usable sector is 488552524

Partitions will be aligned on 2-sector boundaries

Total free space is 77 sectors (308.0 KiB)

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

1 6 76805
300.0 MiB
EF00
EFI System Partition

2 76806 476639515
1.8 TiB AF00
NoName

3 476639516 476798207
619.9 MiB
AB00

4 476798208 488552447
44.8 GiB 0700
BOOTCAMP

Expert 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!

Here is it :

Hello

I have an important program installed that works only with this specific MAC address.

If I restore a backup from time machine will it get back the boot issue ??

Hello

Thé mac is a new one touchpad that I just borought before less than 6 months

Hello

no i dont...

is there any guide that i can use to do it ?