Lion install in BootCamp. Now "Missing Operating System"! Help!

Just installed Lion w BootCamp on a white MB and now when I boot to the Win7 side, I get "Missing Operating System". Any ideas how to fix this?
Thanks in advance.

This is the same problem that I find myself. Help me.
Este es el mismo problema en el que me encuentro.
Re: Lion install in BootCamp. Now "Missing Operating System"! Help!
02-ago-2011 4:49 (in response to William Cochran)
hey can you tell me how to do that?
because when I press the option/alt button on the keyboard, there's just two boot source option , because before upgrade into lion, I have windows 7 too in my mac
There are only two boot option : 1.Macintosh HD , 2.Recovery HD
I just finished downloading the Bootpicker, and got no idea how to use it to change the boot and getting back my windows 7, I have lots of critical data in there

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BootCamp Partition- Missing Operating System Windows Startup Repair

Hi.
I made the mistake of creating a new partition on my HD with an existing Boot Camp partition. I tried to follow the advice of Loner T in this thread https://discussions.apple.com/thread/6574886, and got made the Windows installation bootable. Upon starting up Windows the screen displayed 'Missing Operating System', I tried doing a Windows Startup Repair using the Windows Installation Media without any luck.
Here is the current state of my hard drive.
diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *256.1 GB   disk0
   1:                  Apple_HFS                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            201.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
   4:               Windows_NTFS                         20.0 GB    disk0s4
sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 31130/255/63 [500118192 sectors]
Signature: 0xAA55
         Starting       Ending
#: id cyl hd sec - cyl hd sec [     start -       size]
1: AF 1023 254 63 - 1023 254 63 [         1 -     409639] HFS+
2: AF   25 127 15 - 1023 254 63 [    409640 - 393139416] HFS+
*3: AB 1023 254 63 - 1023 254 63 [ 393549056 -    1269536] Darwin Boot
4: 07 1023 254 63 - 1023 254 63 [ 461056000 -   39061504] HPFS/QNX/AUX
sudo gpt -vv -r show /dev/disk0
gpt show: /dev/disk0: mediasize=256060514304; sectorsize=512; blocks=500118192
gpt show: /dev/disk0: MBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: error: bogus map
gpt show: unable to open device '/dev/disk0': Undefined error: 0
sudo dd if=/dev/disk0s4 count=1 2>/dev/null | hexdump -C
00000000 80 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00 |.. . . . . . . .|
00000010 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00 | . . . . . . . .|
00000140 04 00 00 00 02 01 00 0c 00 00 78 2e 50 15 00 00 |..........x.P...|
00000150 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 |.. .............|
00000160 00 00 00 00 00 00 8a 00 78 2e 50 15 00 03 00 00 |........x.P.....|
00000170 01 00 03 00 35 35 09 00 00 00 3e 00 8c 09 00 00 |....55....>.....|
00000180 76 01 00 00 15 00 02 00 91 77 1c 00 00 00 02 01 |v........w......|
00000190 c9 b5 04 00 01 00 02 00 2c 00 00 00 8c 09 00 00 |........,.......|
000001a0 76 01 00 00 15 00 00 01 00 00 1e 00 00 00 00 01 |v...............|
000001b0 00 00 00 00 41 00 03 00 fb 03 00 00 0c 00 20 00 |....A......... .|
000001c0 10 00 f8 03 35 35 09 00 01 d2 46 00 00 c3 29 0b |....55....F...).|
000001d0 23 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00 |#. . . . . . . .|
000001e0 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00 | . . . . . . . .|
00000200

Please download GPT Fdisk (http://sourceforge.net/projects/gptfdisk/) and Testdisk (http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step).
1. Your GPT is corrupt.
2. The MBR is incorrect.
3. You do not have a valid NTFS header.
You need to run Testdisk first to find the correct NTFS header. Please see http://imgur.com/a/PjmnK for the Testdisk screens.

"Missing operating system" help!

Hey all,
My Mini's hard drive died the other day, so I installed a new one. I have the OSX dvd in my drive, and when I go to boot up, I get an error message "Missing operating system."
If I try to boot from CD by holding down the C button on my keyboard, nothing happens -- same error message. It appears my USB keyboard isn't powered.
Any ideas?

The Apple Aluminum keyboard doesn't work with the startup keys on the mini.
You can use your Apple remote instead: as soon as you hear the startup chime or beep, hold down the menu button on the remote. It will put disc icon up on the screen that you can select with your mouse.
Keep in mind that you need to use the install disc that shipped with your model of Mini -- or else a full retail version.

Get "missing operating system" message when trying to access bootcamp since installing Lion.

I cannot access bootcamp since installing Lion, either through Bootpicker or after holding down the option key after restart. I get the message "Missing operating system." I have access to the bootcamp partition. It shows up on my Mac desktop and was able to run disk verify and repair on it from disk utility. No change. I am using a 2.16 GHz Intel Core 2 Duo processor. Did Lion relabel the bootcamp disk when it created the recovery disk? Thanks.

See here the solution:
https://discussions.apple.com/thread/3199163?start=0&tstart=0

HT4818 after installing boot camp 4 on mountain lion " Missing operating system"

Hello
I hade a small Windows 7 partition , so after updating to mountain lion , I wanted resize win partition .
I made an image of it , then deleted win partition from utility disk , ( wrong idea )
I didn’t notice that boot camp could erase win partition , anyway I have tried several times , and always after reboot boot camp
I get the same
Missing operating system .
If I boot from dvd install win or if i boot from the boot win partition.
hd and partitions looks OK to utility disk
Any idea to fix the problem ?

I presume that you've followed the instructions for sideloading the iMac Windows drivers into your install via USB stick? (wasn't aware the EFI recognized the SD slot as storage on boot. Now i know)
I always found more success in just slipstreaming the drivers and install.xml file onto a custom Win7 DVD rather than the USB approach when trying with my Late 2009 27" iMac. The Win7 installer needs that enclosed .xml file in the driver package to tell it where to find the drivers so that they be loaded when the Win7 image extracts itself.
If you're using mountain lion, then you should be receiving the proper Win7 driver set. If you wanted to create a custom image, then you can use an ISO file, the driver package and disk utility to make something you can use. Either that or you learn what edits your install.xml file needs to point the installer properly and check it manually.
I don't know what links you have so i'll just include everything:
Installing boot camp on a Late 2009 iMac:
http://support.apple.com/kb/TS3173
Direct link to Late 2009 iMac-specific Windows drivers.
http://support.apple.com/kb/DL995
I'd try a USB stick and the iMac-specific driver set. It should steer your insolent windows installer correctly.
Hope this helps.

HELP! How can i restore/recover files from Bootcamp with Boot Failure - Missing operating system error?

Hi,
I am having a few problems with bootcamp on my imac. When i tried to move the bootcamp partition on windows 7 into free space, it crashed and turned off. Ever since i have had the error 'Missing operating system' and it fails to boot. I have some very important files on the bootcamp partition. Is it possible to recover these files or even to restore the bootcamp partition to it's original state? I do not have a backup of my bootcamp partition. Another problem i have is that ever since i tried to expand my macintosh HD partition into free space, when i hold alt while booting up (to choose which partition to boot like i normally do), the bootcamp partition has stopped appearing. This means that i cannot even boot the windows 7 bootcamp partition anymore!
So basically here are my 2 questions:
How can i restore/recover files from Bootcamp with Boot Failure - Missing operating system error?
How can i make the Bootcamp partition appear in Startup Disk and when i hold the option key while starting up my computer to allow me to boot windows 7?
Any solutions are very much apreciated!
Thanks!
I know that bootcamp (disk0s4) hasn't been fully deleted since it appears in disk utility (i cant do anything to it though)
And here is the error i see when i try to launch bootcamp (back when i was actually able to boot up bootcamp to the error screen)

WinClone 3 is OS X and saves Windows image it makes for restore - that should work but you will have to try and you would need to make a new image unless it also works with a native Windows system restore image. It is now supported and has come a long way.
http://www.twocanoes.com/
Paragon Clone OS works and does disk-to-disk clone just like CCC you end up with two bootable drives. But does not work with your setup. It would let you clone and move your Windows install to an SSD or another disk drive though and be bootable.
During its clone process it checks for errors which is very helpful and lets you know - something CCC and others should adopt more of.
http://www.paragon-software.com/downloads/demo.html
I wish for our/my sake you had re-read and rewritten the long 'story' and broken it into a brief list of facts we needed.
OS X
Windows
Backup (though external is much safer) and you want bootable OS X clones as well as TimeMachine
https://support.apple.com/kb/HT1427
https://support.apple.com/kb/HT1553
There are a number of things to do like chkdsk and others as well as Windows DVD to do automatic system repairs and find out why.
AppleHFS - the abilty to mount and read HFS volumes can be notorious.
I would rearrange and redo your storage setup and how you use the 4-5 internal hard drive bays.

Get "missing operating system" message when trying to access bootcamp

Get "missing operating system" message when trying to access bootcamp in win 7
i have windows instaled about a year now.yesterday i tranfer 300 gb of music in my laptop.today i open my mac hold alt on start up to sellect opereting system,i found MacintosHD,recovery, and windows, and i select the windows to boot,but says to me (missing operating system).i boot again osx to see what hapend.osx is workin perfect.i tried to boot windows again but the same msg (missing operating system).i have not make any changes in my mac osx...!!!

Get "missing operating system" message when trying to access bootcamp in win 7
i have windows instaled about a year now.yesterday i tranfer 300 gb of music in my laptop.today i open my mac hold alt on start up to sellect opereting system,i found MacintosHD,recovery, and windows, and i select the windows to boot,but says to me (missing operating system).i boot again osx to see what hapend.osx is workin perfect.i tried to boot windows again but the same msg (missing operating system).i have not make any changes in my mac osx...!!!

I deleted a 200mb partition bt accident, now my laptop shows missing operating system, what should i do?!!

I deleted a 200mb partition bt accident, now my laptop shows missing operating system, what should i do?!!

How old is your Mac?
Have you tried using the Recovery Partition
And why are you deleting partitions?

I upgraded the OS on my iMac to Lion from the App store; and after installation, it restarted and now the operating system won't start up.... it keeps displaying the apple/folder with a question mark and a circle with a line through it! Please help!

I upgraded the OS on my iMac to Lion from the App store; and after installation, it restarted and now the operating system won't start up.... it keeps displaying the apple/folder with a question mark and a circle with a line through it! Please help!

Try starting up with your Snow Leopard DVD and see if the disk can be repaired. Once you are at the installer screen go to the Utilities Menu and choose Disk Utility and choose repair disk. You might also want to try Diskwarrior.
Hope this helps.
Ben

Missing operating system problem

I recently tried to use bootcamp to install Windows 7 everything went good till I tried to reboot the Mac portion....I was greeted to a black screen that says missing operating system need advise

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Missing Operating System

I have a Lenovo T500 Thinkpad. I turned off my laptop and now when I turn on the laptop I receive a message that states "Missing operating system". I do not have any recovery disk or install disk. How do I fix this error? The only thing that I have been able to access is via the blue ThinkVantage key. I receive a screen that has a Startup Interrupt Menu with three options. ESC to resume normal startup, F1 to enter the BIOS Setup Utility or F12 to choose a temporary startup device. I see the messages where the drives are partitioned and I should be able to set back to factory standards somehow, but I sure don't know how to even begin. Can anyone help me, as I am clueless.
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Hi kew659 and welcome to the forum!
Per support page, your T500 came with Win XP pro. Even if you contact lenovo to buy recovery discs, I think they would only sell you Win XP media.
Try following, it will work if you had a good recovery partition of Vista or XP:- http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS013955
Maliha (I don't work for lenovo)
ThinkPads:- T400[Win 7], T60[Win 7], IBM 240[Win XP]
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Apple:- Macbook Air [Snow Leopard]
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"Missing Operating System" on boot?

My Windows side was working perfectly until very recently, where it now displays a "Missing Operating System" error in the BIOS when I start it up.
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The hatter wrote:
You moved Windows to higher number.
Okay , but I just want to remove the partition to a lower one, so He can see the OS, without having to reinstall the whole thing, is it possible ?

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explain more, what do you mean by "missing operating system"? Detail any error messages or what happens when you start your mac.

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So here's the brand new computer I assembled:
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Lion install in BootCamp. Now "Missing Operating System"! Help!

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