"Missing operating system" is displayed when you try to start Windows 10

I have been using bootcamp to access the 10 Windows for quite awhile. It was working perfectly until a member of the family installed a Windows Update, but the battery is dead during the update. Following this window would charge any. A black screen with a blinking cursor. After that, I went back on fairing and wrong used the partition synchronization tool. Now, Windows is in a worse state and the "Missing operating system" message when you try to get back in. In addition, the Mac startup disk no longer allows me to reboot the laptop using the bootcamp partition, as if the partition is not more detected. Disk utility simply shows a greyed out "Disk0s4."

I spent a lot of time looking for a solution, but without success. Here are some of the things I've tried so far:

I don't know if its of any importance but sudo fdisk e/dev/disk0 the following message is displayed:

#: cyl hd s - cyl hd s id [Start - size]

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

1: EA 1023 254 63 - 1023 254 63 [1-409639] < unknown ID >

2: AF 1023 254 63 - 1023 254 63 [409640-174722176] HFS +.

3: AB 1023 254 63 - 1023 254 63 Boot Darwin [175131816-1269536]

* 4: 0 b 1023 254 63-1023 254 63 [244256768-244140032] Win95 FAT-32

The partition Inspector displays this:

Report for internal hard drive *.

Current GPT partition table:

# Start end LBA LBA Type

1 40 409639 system EFI (FAT)

2 409640 175131815 mac OS X HFS +.

3 175131816 176401351 Mac OS X startup

4 244256768 488396799 database

Current MBR partition table:

# A Type starting ending LBA LBA

1 1 409639 ee EFI protection

2 409640 175131815 af Mac OS X HFS +.

3 175131816 176401351 ab Mac OS X startup

4 * 244256768 488396799 0 b FAT32 (CHS)

MBR content:

Bootcode: unknown, but bootable

LBA 40 partition:

Startup code: no (Non-system disk message)

File system: FAT32

Filed under GPT partition 1, type system EFI (FAT)

LBA 409640 partition:

Startup code: no

File system: HFS extended (HFS +)

Filed under GPT partition 2, type Mac OS X HFS +.

Classified in the MBR partition 2, type af Mac OS X HFS +.

LBA 175131816 partition:

Startup code: no

File system: HFS extended (HFS +)

Filed under GPT partition 3, type Mac OS X startup

Classified in the MBR partition 3, type ab Mac OS X startup

LBA 244256768 partition:

Startup code: no

File system: unknown

Filed under GPT partition 4, type database

Classified in the MBR partition 4, type 0 b FAT32 (CHS), active

I also tried to use Windows, but without success startup repair.

If there is no solution to this problem, all least, hope to be able to back up everything that was on the Windows partition.

Thank you very much

What is the year/model of your Mac? Please after the release of

sudo dd if = / dev/rdisk0s4 account = 1 2 >/dev/null | hexdump - C

This will show the first block of the Disk0s4.

Tags: Windows Software

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