After updating my Imac to OS X EL Capitan , decided to boot in bootcamp, by using alt. But it appeared that the windows icon didn’t show up. After that I looked up on the internet and tried to solve this problem using gdisk. It helped and windows icon appeared in the bootcamp screen. But after I tried booting into windows it just showed MISSING OPERATING SYSTEM.
Can somebody please help to solve this problem?
iMac
You need to run Windows Startup Repair.
Thanks alot for your answer. Can you please tell me how to do it in bootcamp?
Please post the output of
diskutil list
diskutil cs list
sudo gpt -vv r- show /dev/disk0
sudo fdisk /dev/disk0
sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C
This is for recording purposes.
What year/model is your iMac? Does it have a built-in Optical drive?
iMac (27-inch, Late 2012) 3,2 GHz Intel Core i5.
It does not have optical drive.
Last login: Thu Aug 25 20:12:30 on console
iMac-alexander:~ alexanderbagirian$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_HFS Macintosh HD 798.3 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data 201.0 GB disk0s4
iMac-alexander:~ alexanderbagirian$ diskutil cs list
No CoreStorage logical volume groups found
iMac-alexander:~ alexanderbagirian$ sudo gpt -vv r- show /dev/disk0
Password:
gpt: unknown command: r-
iMac-alexander:~ alexanderbagirian$ sudo gpt -vv r- show /dev/disk0
gpt: unknown command: r-
iMac-alexander:~ alexanderbagirian$ sudo fdisk /dev/disk0sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C
iMac-alexander:~ alexanderbagirian$
Each "sudo" command is on it's own separate line. The corrected GPT command is
sudo gpt -vv -r show /dev/disk0
You do not have a valid NTFS header on disk0s4. Can you please provide details of what the original issues and steps you took to try and rectify the problem?
After updating to OS X Capitan, the windows window disapeared. So i looked throug the internet and did this (picture)
Can you use El Capitan has deleted my bootcamp windows partition as a reference and download Testdisk and run a Testdisk scan and run a Quick Search?
I don't know if I did it correclty. But this is what I got!!!!
Please use the down arrow key and scroll to the line that has a start value of 1559883776 and use 'p' to print the directory and post a screen shot.
This is the correct Windows partition. The problem is that your Recovery HD overwrote parts of Windows NTFS. What OSX version did you upgrade from, to El Capitan?
I don't know! But I did not upgrade the computer for a very long time. how I can find it out?
missing operation system
