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Level 1

0 points

Repairing Boot Camp after creating new partition

Loner T,

I did this fix:

sudo fdisk -e /dev/disk0

setpid 4

flag 4

write

When I started Windows all I had was a black screen with a blinking underscore "_"

I went back to my MAC and try it again... but instead of "setpid 4" and "flag 4" I did "setpid 1" and "flag 1"

Now when I boot into Windows/BootCamp is saying "Missing Operating System" and OS X is not bootable.

Also Macintosh HD is gone from Disk Utility when I go into recovery mode and check Disk Utility...

I there any REMEDY for this? I have a lot of data that I need to recover...

ANY help is really appreciated!!!!!!!!

Mac Pro, OS X Yosemite (10.10.1)

Posted on Nov 24, 2014 6:21 AM

48 replies

Level 9

59,513 points

Can you use Windows 7 Vanished after Yosemite update... help? as a reference and download Testdisk and GPT Fdisk and start a Testdisk scan?

yes

Level 1

22 points

hit del as its starting go into Bios AND SET YOUR BOOT UP PREF.

Repairing Boot Camp after creating new partition