Cannot Boot...HELP!!!!!!!

I recently upgraded my PB G4 to OS X 10.4 using the full install retail disk. That was about a week ago and everything was good until I installed an Apple Software upgrade for QT today. When the install completed it asked me to Restart, which I did. However, when it the PB reboots it gets past the grey screen and the blue apple screen appears with a white box and has a blue bar which I guess tracks the progress of the boot up process. When the blue bar is full it just stays there and nothing happens.
I don't know what to do, any advice would be great. I've had this PB for a while but I am by no means a pro so please give me detail like you would a 5 yr old. Thanks

OK, 5 year old it is. Where is your backup? If you have one, you have no problems. If you don't, your bad. Get one (yes, I have recommendations).
Try this. If you have a friend with another mac PPC connect to his machine using Target Mode (hold down the "T" key on startup, untill the firewire symbol shows on your computer's screen). Then, connect with a firewrie cable.
Your machine will appear as a hard drive on his desktop. Download the QT update, to your friends computer, from apple.com (Support section). Reinstall it to your machine, if it lets you (I am not certain you can install QT on anything but the startup volume, but this is worth a try).
If this is not possible, you are looing at an Archive and Install. Find the instructions here:
http://docs.info.apple.com/article.html?artnum=107120

Similar Messages

Help: Cannot boot from leopard disc anymore, everything else fine

I was working on an ibook and messing with it in firewire mode and was going to install leopard on it that way from my macpro. (just letting you know the context)
I tried to restart my machine(mac pro) and boot leopard both by pushing C and by running the installer.
I get the "You need to hold the power button panic message" everytime I do this. I unplugged external devices and tried this also and it has the same problem.
I cannot boot from the dvd anymore. If I eject the disc, osx loads normally.
Any ideas what I can do? (I have tried safe boot, pram clearing and hold option on boot to check options)
Here is the kernel panic when it finally loads into osx.
here is the kernel panic log when it reboots into OSX
Sat May 17 14:13:09 2008
panic(cpu 1 caller 0x001A7BED): Kernel trap at 0x894ec373, type 14=page fault, registers:
CR0: 0x8001003b, CR2: 0x00000018, CR3: 0x00df8000, CR4: 0x00000660
EAX: 0x00000000, EBX: 0x00000000, ECX: 0x00000000, EDX: 0x0a5a1004
CR2: 0x00000018, EBP: 0x817c3bc8, ESI: 0x0a4c5c00, EDI: 0x0a4c5c00
EFL: 0x00010246, EIP: 0x894ec373, CS: 0x00000008, DS: 0x0a3c0010
Error code: 0x00000000
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x817c39d8 : 0x12b0e1 (0x4555b4 0x817c3a0c 0x133238 0x0)
0x817c3a28 : 0x1a7bed (0x45e568 0x894ec373 0xe 0x45dd24)
0x817c3b08 : 0x19e517 (0x817c3b20 0xa83c980 0x817c3bc8 0x894ec373)
0x817c3b18 : 0x894ec373 (0xe 0x48 0x10 0x10)
0x817c3bc8 : 0x894db540 (0x0 0xa83c980 0xa4c5c00 0x1)
0x817c3c08 : 0x78d45139 (0xa4c5c00 0x1 0x0 0x13)
0x817c3c68 : 0x78d3e940 (0xa4c5c00 0x2407 0x817c3d2c 0xa4c5c00)
0x817c3c98 : 0x40c515 (0xa4c5c00 0xacd8130 0xacd8130 0x0)
0x817c3ce8 : 0x437535 (0xa4c5c00 0xacd8130 0xacd8130 0x0)
0x817c3d48 : 0x18c8aa (0xa4c5c00 0xacd8130 0x0 0x0)
0x817c3db8 : 0x12d165 (0xa525c78 0xaa76b90 0x817c3df8 0x11ee04)
0x817c3df8 : 0x126247 (0xa525c00 0xa2f9254 0xaad84b0 0x0)
0x817c3f08 : 0x196afc (0x817c3f44 0x0 0x0 0x0)
0x817c3fc8 : 0x19eb34 (0xab382a0 0x0 0x1a10b5 0xa63f208)
No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xbffff378
Kernel loadable modules in backtrace (with dependencies):
com.apple.NVDAResman(5.1.6)@0x894d8000->0x89704fff
dependency: com.apple.iokit.IONDRVSupport(1.5)@0x78cc5000
dependency: com.apple.iokit.IOPCIFamily(2.4)@0x78ac0000
dependency: com.apple.iokit.IOGraphicsFamily(1.5)@0x78d36000
com.apple.iokit.IOGraphicsFamily(1.5)@0x78d36000->0x78d51fff
dependency: com.apple.iokit.IOPCIFamily(2.4)@0x78ac0000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
9A581
Kernel version:
Darwin Kernel Version 9.0.0: Tue Oct 9 21:35:55 PDT 2007; root:xnu-1228~1/RELEASE_I386
System model name: MacPro1,1 (Mac-F4208DC8)

I really appreciate everyone's help.
I am certainly not above taking the machine in but I will say this.....
I have been building and working on PC's for 15-20 years. I have never once used or had the need for a repair shop. It is my hobby. I recently switched to osx to give the mac a try and I love it.
I will say that vista/xp has four times as many problems but at least i can fix whatever comes my way hardware or software.
Any more ideas how to settle this without making my first trip to the repair shop ever?...
Chad

Cannot boot from osx or cd, help

Hi,
I have a problem. My macbook 5.1 boots only to windows, not to cd or osx. I am not sure what has happened but I think I installed the latest security update. I have a backup with time machine (osx) and vista with windows backup. I can wipe the whole disk clean (I do this only if I am absolutely sure it will work, CD is now unresponsive, what about if network fails...).
However, I cannot boot from CD, to verbose mode or to single user mode. None of the keys work (eject, c, s, v, cmd+c, cmd+v, cmd+s) anymore at startup. My installation dvd is stuck into the cd-rom. The eject button does not work in windows (otherwise the vista works perfectly). Also the refit screen has disappeared.
This problem is caused (to my knowlege) due to following actions:
1. security updade => failure to boot osx (hangs to apple-logo and shuts down)
2. recovery from time machine to 2 days old configuration (last known working)
3. current status, no cd, osx or startup buttons
This is my work computer and I need the linux (osx) part on monday. Please help.
Juha
Technical details:
- refit
- osx leopard
- macbook 5.1
- vista created with bootcamp
- timemachine 500Gb

I got the problem worked out. Now that I have the possibility to boot from cd I used the recovery from timecapsule again. Now it worked more properly. There is some issues with some programs and data (missing), but thats another story.
Last time I left the recovery program calculating the space needed (step 1) overnight, as takes a lot of time. I finished the step 2 (choose recovery date and copy the files) in the morning. I was not at the computer when it did the thing and I only saw the text 'recovery complete'.
Apparently there is a 'feature' that if you lose the connection between steps 1 and 2, the recovery program copies the network path that is empty (connection lost -> empty path). The program thinks everything is copied and gives 'recovery complete' message.
The problem is now mostly solved, some programs are not recovered. This is seen as question mark icons in the tray. Overall I have succesfully recovered from the latest security update.
Juha
P.S. My original login name has disappeared from this forum. I am the same guy as Dv3. Could some admin mark this as solved.
Message was edited by: dve_

MOVED: Windows cannot boot because of missing/corrupt hal.dll! Help!

This topic has been moved to Operating Systems.
Windows cannot boot because of missing/corrupt hal.dll! Help!

Hi,
make sure you have disconnected all non-essential external devices (printers, scanners, external harddisk) prior to installing BootCamp Windows.
Leave only mouse, keyboard and display connected.
Make sure that your XP CD is either retail or OEM/systemBuilder version and not a manufacturer-bundled one.
Also make sure that the CD is 'clean' (no dust, no scratches, etc.).
Use the BootCamp Assistant to revert back to one single OSX volume.
Use OSX Disk Utility to Verify your harddisk and repair permissions.
Retry the XP installation from scratch.
Generally using NTFS is more likely to not getting the 'missing hal.dll' error.
Stefan

HELP CANNOT BOOT

ok, my mbp was working fine for a bit, but when i tried to use time machine it didnt work with error -43 "file not found". i figured it just wasnt installed properly. so i booted up my leopard install disc and did archive and install. well, about twenty minutes in to the installation it came up with an error, saying that it could not install "BSD" (i dont know what that it)". not thinking anything of it i just restarted and tried to install again. only this time, when it checked to see if i had osx 10.4 or later, it denied that i did. i suspect that the original installation was interupted before it could install a working os, because i cannot boot the os at all.
PLEASE HELP ME i cannot install a fresh os, i cannot boot the old os, and repair disc does nothing. i have no idea what to do.
thanks in advance

Well this sort of calls for extreme measures:
Boot from your Leopard Installer DVD. Proceed to the point where you select a destination volume. Select your desired startup drive and click on the Options button. Select the Erase and Install option then click on the OK button. Finish the installation.
This will erase everything on the drive. If you have data you need to recover, then I suggest you do that first. You will need a second Mac with Firewire. Use Target Disk Mode to access the drive on your computer and transfer your personal files to the other computer or to an external Firewire drive connected to the other computer.

My Mac can't get passed gray screen, and I cannot boot from cd. Help!

My Mac can't get passed gray screen, and I cannot boot from cd. Help!

Grey Screen
https://support.apple.com/kb/TS2570
https://discussions.apple.com/message/16276201#16276201

Help diagnos. flashing question mark on monitor, cannot boot from CD drive

Any ideas? This is an older G3 tower which was "souped Up" wtih USB and Firewire cards, memory
Mac froze in midst of work last week. Now only get flashing question mark supermimposed on image of a floppy drive.
Tried to re install system (OS9) but cannot get ANY CD to boot from CD drive. I reboot, hold down "C" Key with CD in tray ( and i can hear the CD drive working). But the tray opens and ejects/rejects the CD).
I now suspect the problem is NOT the OS but rather a hardware issue.
Am I correct in this assumption? what else could this be?
I am trying to help an older gentleman who has no backups and has some important documents on the HD.If I can boot up, might be able to retrieve those itesm. (and get a newer Mac!)

Not the answer,Dale (thanks anyway)
I read that article.
I cannot boot from any bootable CD.
Inserted the OS install disk as well as third party bootable CD.
with CD in the CD drive tray, I restarted and held down the C key.
Mac restarted but the CD tray popped open. Would not boot from the CD.
That is why I posted query
not only do we have the flashing question mark but bootable CDs are not booting this Mac. So I can do no diagnostics, no repair, not salvage of files.
I am trying to understand where the problem lies. am guessing Hard Drive failure but why should CD also not work?

Help: Cannot boot Windows with GRUB

here is the strangest thing i have ever met:
I cannot boot my Windows system after I installed Archlinux, which took me a huge amout of time
I think the menu.lst file has no problem, the windows lines as follow:
# (2) Windows
title Windows
rootnoverify (hd0,0)
makeactive
chainloader +1
The weird thing is that I can mount any other ntfs partitions but /dev/sda1, which contains the windows os
when I try to mount it, the error is as follow:
[mntent]: warning: no final newline at the end of /etc/fstab
WARNING: Couldn't set locale to 'zh_CN.UTF-8' thus some file names may not
be correct or visible. Please see the potential solution at
http://ntfs-3g.org/support.html#locale
Error opening '/dev/sda1': Permission denied
Failed to mount '/dev/sda1': Permission denied
Please check '/dev/sda1' and the ntfs-3g binary permissions,
and the mounting user ID. More explanation is provided at
http://ntfs-3g.org/support.html#unprivileged
But with the same settings in /etc/fstab , I can mount other ntfs partitions, why???
I think the two problems above should be related

york824 wrote:
bash-3.2# /sbin/fdisk -l
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xb8e8fcbb
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1305 10482381 7 HPFS/NTFS
/dev/sda2 1306 2611 10490445 5 Extended
/dev/sda3 2612 6397 30411045 7 HPFS/NTFS
/dev/sda4 6398 19452 104864287+ 7 HPFS/NTFS
/dev/sda5 1306 1371 530113+ 82 Linux swap / Solaris
/dev/sda6 * 1372 2024 5245191 83 Linux
/dev/sda7 2025 2611 4715046 83 Linux
here is my partition information
And I would advise to remove the bootable attribute from sda6, I doubt windows will like to "see" its own partition and another one marked as bootable, even if it's a logic partiton.

Macbook Pro4.1 Cannot Boot Up After Battery Allowed to Drain.

I’m hoping someone can help me troubleshoot some strange behaviour of my Macbook Pro4.1. It’s an early 2008 2.4Ghz Core 2 Duo. I’ve had this running perfectly for the past 2 months with an Apple 65W Magsafe Adaptor, although I recently got an 85w version so I’ve started using that for a bit. I recently read somewhere that it’s good to allow the battery run completely flat once a month or so, so I unplugged the adaptor last week and ran it off the battery for the afternoon. When it was almost done (10% charge left) I went for a shower and came back to find the Macbook powered down. I plugged in the Adaptor back in but I couldn’t get it to start.
I have to say at this point, that my 85w adaptor sometimes needs a wiggle at the magsafe end to get it to work. Despite this though I couldn’t get the green power LED to light or the Macbook to boot up. I then tried my 65W adaptor, which is perfect, and although the LED lights up (first green and then amber) the macbook just doesn’t power up with it. I tried the 85w one again the following day after leaving the macbook disconnected and battery removed overnight, and was pleased to find that it finally booted. Amazingly, despite having no power at all for the whole night it came back with all my applications running, safari tabs and the documents open! Anyway, I noticed from the menu bar that the battery was not charging and I couldn’t seem to get it to charge. I ran it all day and the system profile showed that the Battery was about half full and had a ‘normal’ condition with about 187 charge cycles. However I can’t run the Macbook off the battery. When the power cuts out from the 85w adaptor the whole macbook shuts down. The battery isn’t doing anything, even after charging all day and being half charged. What’s more neither of my 65w adaptors can start the macbook no matter how many times I try them. Only my 85w one can boot it, but it’s defective so very rarely seems to work. The 65W ones worked perfectly before,so I don’t know what’s changed.
I read the Apple guide to resetting the SMC and have now followed the procedure several times, but it hasn’t helped. I cannot boot the Mac any more. Does this Macbook come with an 85w adaptor or 65w? I’m confused because the 65w ones always worked until now. Also, the battery itself is only 60w.
I’m going to purchase another 85w Adaptor, in the meantime any advice would be very welcome. Thanks for reading!

Thanks again for all the input, very much appreciated.
So, in case of any misunderstanding, both my 60w Magsafe Chargers are perfect. I use them with other MacBooks. No problem. I also used them with this MacBook, prior to the battery going flat. Again, no issues. Despite that, even when I've completely removed this battery and tried to boot the Macbook up from just the chargers, nothing happens at all. There is no power. I've reset the SMC which is the obvious culprit. Still nothing.
The only charger I have which can start it is an 85w one. However that's defective, so I don't get a connection long enough to complete a bootup. The question is, is this normal? Should this MBP only work with an 85w and not a 60w?? And if that's the case, how come it worked on a 60w charger for so long? And why is the battery 60w and not 85w?
thanks again

Cannot boot itunes after 10.1.2 upgrade.

Hello there..I had itunes 10.1.1 running fine on my XP - apple updater told me there was a new version (10.1.2) so I upgraded...did the install and now I cannot boot itunes from desktop or anywhere else...tried uninstalling and reinstalling but no luck...no messages, no errors just...no itunes.
Do you think you can help or anyone else who reads this?

I Finally got mine working correctly. I have windows 7 64 bit. I uninstalled everything and reinstalled using the 64 bit. It works now. I don't know if the automatic update selected the 32 bit to update. I rechecked the system requirements, it looks like itunes no longer supports the 64 bit xp system--if that's what your is. I would look into that, and maybe downgrade to the olde itunes.

Cannot boot after recovering a FileVault 2 protected disk

I used Lion's new recovery HD partition to restore a four day old Time Machine backup. However, two days ago I enabled FileVault 2, which is probably the cause of the fact that I cannot boot my mac anymore. As the whole disk is locked, I cannot access the recovery partition either. Disk Utility of Snow Leopard install DVD doesn't support unlocking the partition, it is grayed out and therefore I'm not able to mount it. I honestly don't know yet how I can fix this problem. Can you help me?

Unlocking worked using the DVD, but I could never really make it bootable anymore. Reinstallation of Lion on the existing partition didn't work either. Just FYI, when trying to make the disk the startup disk it give me the following error: 'Building boot caches on boot helper partition failed'. The only solution that worked and was good enough for me was to delete the partition, reinstall lion and restoring time machine data on the new installation afterwards.

Kernel Panic / G4 dp500 / Cannot boot currently

Machine Config:
10.4.8
G4 DP500
1.5 gigs ram.
Internal ATA133 PCI controller card (Sonnet)
Four internal hard drives. My current 4-drive configuration:
Three 200 gig drives are connected to the internal ATA133 sonnet card, and out of those three, just one was made to be bootable with 10.4.8.
The fourth drive (160gig) is connected to the on-board ata33 connector, and is bootable with 10.3.9 on it. Presently I cannot boot from either drive
I installed the Sonnet ata133 card three months ago to expand the drive capacity. I wanted to "see" hard drives larger than 127 gigs, which is the limit if using the onboard ata33.
Everything has been working fine for 3 to 4 months after I installed the Sonnet card, and three internal drives. But about three days ago, my computer was hard-frozen when I went to use it. No mouse movement etc. When I rebooted, I received the Kernel panic black screen with its resulting verbosity.
I had a spare internal drive laying around that was preconfigured with an OS on it. So fearing the Kernel panic was from the Sonnet controller card, I installed my spare drive to connect from the mother board ata33 connector. I was then able to boot from my spare. after that I was able to repair my boot drive that was attached to my Sonnet card. The one that was initially corrupted by the Kernel panic.
After rebooting successfully to m, I decided to leave my spare boot drive attached the on-board ata33 connecter (just in case the kernel panic happened again)
Well, it did happen again. And now I can't even boot from my spare now. Its as if the kernel panic is destroying the directories of my boot drives!
Specifically the volume header wraps.
In addition, I can't even boot from Disk Warrior or my OSX install disk. The screen just hangs at grey. So, I have no more spare boot drives available, and I cannot boot from cd/dvd. The cd/dvd drive is attached to the internal on-board ata33 like my spare is.
I know that heat will often cause a hard freeze. But will it also cause kernel panics upon reboot?
As it stands now:
When ever I try to reboot, a black screen will display unix command line text describing kernel panic and the last line is"
"Panic: we are hanging here."
This seems like a hardware issue. But why are my boot directories becoming corrupted? At this point, maybe its over heating. I have four drives now stuffed into the G4 with ribbon cables all over the place and a vent fan installed into one of the unused PCI slots.
I haven't installed any new hardware lately.
I upgraded to 10.4.8 and the panic still happens.
I have 30gigs of itunes, 20gigs of iphotos, 40gigs of imovies, 10 gigs of mail, etc. My back up system was using SuperDuper to copy my USER folder to another internal drive, so I know I have a backup, It's just that I cannot access it. If I can recover my data, I'm going to go out and buy a G5, transfer my data, and be done with it. If I can't recover my data, then I will be forced to live a life of quiet desperation. My wife will leave me if I've lost her itunes collection
BTW, what is a good program to back up to 8.5 gig DVD's? Can I make large 20gig .DMG files and segment then into 8.5 gig portions? I no longer want to rely on internal backup. I would feel better knowing that my back were on dvd's locked in my fire safe. When did I become so dependant on computers?!
Losing sleep.
Haifarmer

It may not help, but it's worth a try to reset the PMU. See Mac PRAM, NVRAM, CUDA/PMU & Battery Tutorial
When trying to troubleshoot problems, disconnect all external devices except your monitor, kbd & mouse. Do you experience the same problems?
May be a solution on one of these links.
Troubleshooting
The X Lab (Troubleshooting & Maintenance of OS X)
OS X Routine Maintenance & Generic Troubleshooting
Prevent Mac Disasters
Kernel Panic
Mac OS X Kernel Panic FAQ
Mac OS X Kernel Panic FAQ
Resolving Kernel Panics
12-Step Program to Isolate Freezes and/or Kernel Panics
 Cheers, Tom

I cannot boot from HDD nor CD/DVD drive - Satellite C

I want to recover my laptop & i need to boot from cd.
I pressed F12 first time & boot from cd but i discoverd that i have put another cd just when i restarted (correctly) i could not boot from cd neither hdd.
When i log in bios hdd was detected but not available in boot priority menu. Just network adapter was there & now i cannot boot from hdd nither cd/dvd. Bios version is 1.30
PLEASE HELP ME

> When i log in bios hdd was detected but not available in boot priority menu. Just network adapter was there & now i cannot boot from hdd nither cd/dvd.
Does this means that neither HDD nor CD/DVD drive appears in the BIOS boot option?
Strange what notebook model do you have?
Did you try to set BIOS to default?
If not do this (press F9 and save the changes in BIOS)

Win 7 pro installed on hp touchsmart 320-1030, the machine cannot boot from installation DVD. Assist

I have installed Win 7 professional on hp touchsmart 320-1030 with an OEM DVD to overwrite Win 7 premium preinstalled from factory.
I want to reboot the machine with the same DVD after completing the installation, to test for possibility of reimage in case of crash. Although in bios, I specify cd\dvd as firts boot media, the machine cannot boot from installation DVD. I have 20 machines that behave this way. Can anyone assist?
Note: I had to delete all partitions on the PC before doing a fresh installation of Win 7 pro as Premium can not joing domain.

Hello,
So, you installed Window 7 Pro with a DVD, you boot with it to install the O.S, and now it does not work?
Have you tried to load the BIOS default values or even updating the BIOS?
If it had work before, cant understand why it does not work now...
Let me know.
Thanks,
I work for HP! Please remember to provide and if this helped click ON

I cannot boot up my Mac book and all I get is a long beep

I cannot boot up my Mac book and all I get is a long beep
Have tried checking the keypad and no luck
Is this a logic board issue or is it something else?

My daughters Mac crashed mid assignment and after hours for phone support. So was looking to see if there was anything we could do here. Your advice is correct but the issue was "long beeps". Which are generally a serious issue and not one that we are going to be able to deal with. Like the icon .... and do appreciate the fact that you were happy to help. cheers

Cannot boot in Windows/Boot Camp anymore

Hello.
I'm Running OSX 10.10 Yosemite and Windows 7 x64 Ultimate.
I had Bootcamp working pretty well in my MacbookPro late 2013. But I needed a bit more space into the Win7/BootCamp partition. So I went to Disk Utility and reduced the "Macintosh HD" partition and applied the modifications. Until this, no problem.
I restarted my Mac with ALT key to boot into windows and assign the unallocated space to the Win7/Bootcamp partition. I used "MiniTool Partition Wizard Home Edition Free" in windows to allocate the space to the Win7/BootCamp partition. The program "said" it needed to reboot so that the changes could be applied because "Drive C is being used". And so I did.
When booting (in Win7/Bootcamp partition), Minitool partition wizard began making the changes, but right after they were done I got the message that "...changes were made to the partition..." and "...no bootable device...". So now, I cannot boot into Win7.
Also, if it helps, I followed this tutorial on youtube that seemed to work for the "youtuber" -- http://youtu.be/zhkdOLXT6Eg
So, anyone know how to proceed so that I can keep my partitions as is, whilst fully restoring normal BootCamp functionality ?
Thank you,
Ricardo Monteiro

The NTFS Header looks correct, which is surprising. It seems to be the old NTFS header.
From your current GPT output, you have
546998272 195733504      4
742731776 234373120      4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
From your Fdisk output you have
*4: 07 1023 254 63 - 1023 254 63 [ 546998272 - 430106624] HPFS/QNX/AUX
This is what recommend. Download GPT Fdisk from http://sourceforge.net/projects/gptfdisk/.
1. Delete the old entry and create a new entry at GPT#4.
sudo gdisk /dev/disk0
p
d
4
n
4
546998272
430106624
0700
p
w
y
Here is an example of the delete/new...
Command (? for help): d
Partition number (1-4): 4
Command (? for help): n
Partition number (4-128, default 4): 4
First sector (34-1954210086, default = 1454210080) or {+-}size{KMGTP}: 1454211072
Last sector (1454211072-1954210086, default = 1954210086) or {+-}size{KMGTP}: 1954209791
Current type is 'Apple HFS/HFS+'
Hex code or GUID (L to show codes, Enter = AF00): 0700
Changed type of partition to 'Microsoft basic data'
Command (? for help): p
Disk /dev/disk0: 1954210120 sectors, 931.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 6ED0C429-00D1-4759-B50E-04B6FB80D0E3
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1954210086
Partitions will be aligned on 8-sector boundaries
Total free space is 1293 sectors (646.5 KiB)
Number Start (sector)    End (sector) Size       Code Name
   1              40          409639   200.0 MiB   EF00 EFI System Partition
   2          409640      1452940543   692.6 GiB   AF00 Customer
   3      1452940544      1454210079   619.9 MiB   AB00 Recovery HD
   4      1454211072      1954209791   238.4 GiB   0700 Microsoft basic data
2. This is a tedious process and you want to check after the second 'p'rint command that it looks reasonable, before the 'w'rite and 'y'es to confirm.
3. You will need to reboot after the change, because the disk you are booted from is the one being modified. Reboot will rebuild disk0s4 using the start/end you entered.
4. Run the dd command - sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C and check that the first line contains "R.NTFS".
5. Once you have a working GPT#4, a new hybrid MBR needs to be created which will overwrite what you see in your Fdisk output. This is also done using GPT Fdisk (Gdisk). Your numbers will look different than what are in the following example. In most cases, you will use the default except entry 4, which should have a 'y' for bootable flag.
sudo gdisk /dev/disk0
GPT fdisk (gdisk) version 0.8.10
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
Partition table scan:
MBR: hybrid
BSD: not present
APM: not present
GPT: present
Found valid GPT with hybrid MBR; using GPT.
Command (? for help): p
Disk /dev/disk0: 490234752 sectors, 233.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 59BDFEEB-1EB4-4529-94FE-3CBC2C3CD513
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 490234718
Partitions will be aligned on 8-sector boundaries
Total free space is 2604 sectors (1.3 MiB)
Number Start (sector)    End (sector) Size       Code Name
   1              40          409639   200.0 MiB   EF00 EF
   2          409640       401060383   191.0 GiB   AF05 Macintosh HD
   3       401060384       402329919   619.9 MiB   AB00 Re
   4       402331648       490233848   41.9 GiB    0700 Microsoft basic data
Command (? for help): r
Recovery/transformation command (? for help): h
WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,
just hit the Enter key at the below prompt and your MBR partition table will
be untouched.
Type from one to three GPT partition numbers, separated by spaces, to be
added to the hybrid MBR, in sequence: 2 3 4
Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y
Creating entry for GPT partition #2 (MBR partition #2)
Enter an MBR hex code (default AF): AF
Set the bootable flag? (Y/N): n
Creating entry for GPT partition #3 (MBR partition #3)
Enter an MBR hex code (default AB): AB
Set the bootable flag? (Y/N): n
Creating entry for GPT partition #4 (MBR partition #4)
Enter an MBR hex code (default 07): 07
Set the bootable flag? (Y/N): y
Recovery/transformation 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!
Warning: The kernel may continue to use old or deleted partitions.
You should reboot or remove the drive.
The operation has completed successfully.
6. a. Test 1 - Can you see your Bootcamp volume in Finder.
    b. Test 2 - Can you files in the Bootcamp volume?
    c. Test 3 - Can you see Bootcamp in your System Preferences -> Startup Disk.
    d. Test 4 - If Test 1-3 are successful, select Bootcamp and click on Restart. You may need Windows startup repair, if you see a hanging underline cursor at the top left corner of your screen. In most cases, it is not required.

Cannot Boot...HELP!!!!!!!

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