Home > windows 7 > Mac Pro won't boot from Windows 7 DVD - Flashing prohibitory sign

Mac Pro won't boot from Windows 7 DVD - Flashing prohibitory sign

January 25Hits:5

I am trying to install Windows 7 on my Mac pro, I have tried everything it seems. I have a perfectly good Windows 7 DVD which boots on other devices, yet it doesn't on mine. First off it started with spitting out the DVD (which I can understand ;) ), so I thought its my superdrive. I went and bought a new drive today, except this is a SATA drive and tried to boot from there. It load the DVD fast and easy within OSX, but when I reboot and try to boot from the disk it hops to a flashing Apple logo and a deny logo (circle with a diagonal line thru it).

What am I doing wrong? The DVD is legal, its not an illegal copy (however, I tried that as well.. and didn't work either). I googled it a bit but cannot find any similar problem.

With flashing logo's, I mean it flashes every second between these two logos: Mac Pro won't boot from Windows 7 DVD - Flashing prohibitory sign

Edit 1
I have now also tried it using Windows 8, downloaded from Microsoft.

Edit 2
I have now also tried it using an Windows XP Disk. Same problem, flashing icons.

Edit 3
I have now also tried:

  • Removing all drives and installing OSX 10.6 on one of the 1TB drives. Using bootcamp and installing. Same problem
  • Reformatted my 750GB Drive and added MBR support. Formatted as Fat drive. Same problem.
  • Removing all drives and trying to boot from disk. Nothing happens, just a white screen.
  • Reset the PRAM so many times that I guess the computer almost tells me to give it a brake.
  • Tried booting with only C hold down. Same problem.

Nothing seems to help.

Also, I just found this page: http://support.Apple.com/KB/HT2674 According to that page, the problem is:

Circle with Slash - could not load boot.efi, or some other issue


Metallic Apple - found boot.efi.

More: http://support.Apple.com/KB/TS1892?viewlocale=en_US

Edit 4
I tried all evening to restore the firmware, but it just refuses. The sleep light flashes a few times, the tone comes, then the normal sound boot sound comes and OSX boot like it should. I am getting crazy here.

Edit 5
Tested as well with both 10.5 and 10.6 retail disks, they load perfectly. (Maybe due to that they have GUID formatted?)


The Apple article EFI and SMC firmware updates for Intel-based Macs specifies that MacBook Pro 3.1 can only run EFI 1.5.1. (From the article you can also download this EFI version.)

As Windows 7 needs EFI version 2, this means that you cannot boot Windows 7 x64 from the DVD. Some more facts about the EFI problem can be found in Native UEFI Windows 7 Boot on Mac Mini.

You will need to convert the Windows 7 DVD that you have to one that can work on the Mac.

Some resources that may help here are :

Installing Windows 7 x64 on a Mac Pro (Late 2006)
“Select CD-ROM Boot Type :” prompt during Vista, Server 2008 (& R2) & Windows 7 x64 Boot on Macbook

Related Articles

  • Mac Pro won't boot from Windows 7 DVD - Flashing prohibitory sign

    Mac Pro won't boot from Windows 7 DVD - Flashing prohibitory signJanuary 25

    I am trying to install Windows 7 on my Mac pro, I have tried everything it seems. I have a perfectly good Windows 7 DVD which boots on other devices, yet it doesn't on mine. First off it started with spitting out the DVD (which I can understand ;) ),

  • How do I boot my Mac pro using an HD with Windows 7 already installed?August 22

    I've inserted an HD from a Dell with Windows 7 already installed, how do I get my Mac Pro to boot using that HD without having to reinstall Windows? Thanks!! --------------Solutions------------- Hold down option while booting, then select your Window

  • Mac Pro how to boot in safe mode with a Windows Keyboard?December 3

    Model No: A1186 Mac Pro 3,2 I think it's a 2008 with an unknown version of MacOSX installed. I'm stuck at the blue screen, I'm pretty sure it's a permissions problem, as I lost the network connection when setting it up. But I can't boot into safe mod

  • Mac Pro failing to bootJanuary 11

    Two times now, over the last 3 weeks my Mac Pro is failing to boot. Once on, it stays on the blue screen with the spinning icon and never gets to the login screen. To remedy this I boot from install dvd, re-install Leopard and only then will it boot

  • Using the Mac Pro integrated microphone in VirtualBox Windows XP Host?December 15

    Is it possible to use the integrated microphone that comes with the Mac Book Pro inside Virtual Box with Windows XP Host? Because I tried and the only thing I get is noise. --------------Solutions------------- Latest information I found about this to

  • AHCI, Windows 7 and can only boot with Windows DVD presentFebruary 15

    Foolishly, I installed Windows 7 with my new SSD set to IDE. I would like to change it to AHCI. I have done this before, with a different motherboard. What happens: I set the controller to AHCI in the BIOS; I also check correct boot order On boot, I

  • Mac pro 2,1 boots up but won't restart?August 5

    I am very confused with this problem. So I just recently purchased a 8 core 3.0ghz Mac Pro 2,1 and I upgraded the memory with 16gbs of hynix ram, and everything worked great the computer was reading all 16gbs of memory and I thought all was well but

  • Does Find my Mac work if you boot into Windows on BootCamp?March 21

    If I have Find my Mac set up and Bootcamp is installed as well, will my computer be trackable when I'm in Windows? What happens if a thief steals my computer and remains in Windows all the time, will I ever be able to track the laptop? --------------

  • Mac Pro won't start from DVD, crashes while tryingMarch 24

    I have a Mac Pro 10.6.8 which will not start. I wanted to re-install my Mac Pro (Intel dual core 2.66) which is currently running Mac OS X 10.6.8. I inserted the retail Mac OS X 10.6 install disc, and held down the C key on my keyboard to boot the ma

  • How to boot Windows DVD without UEFIJuly 28

    I searched the web, but didn't find anything. I formated my single partition (300GB) to mbr partition table (it used gpt before). Now I want to install windows 7 but I can't because: Windows cannot be installed to this disk. The selected disk has an

  • Broken Display After Installing Kubuntu on Older Mac ProNovember 9

    I downloaded the Kubunutu 13.10 64-bit installer and made a bootable USB stick. I want to install Kubuntu on a fresh partition on my Mac Pro 1,1 which is currently running Xubuntu 13.10 (as well as Mac OS X). I had to do the install by booting the in

  • Boot to Windows 7 install CDFebruary 25

    I am trying to dual boot Windows 7 and Ubuntu on my 2006 Mac Pro. I know the Windows 7 install CD is good, but I get a bizarre message during the boot process, after which nothing happens. .2 Select CD-ROM boot type: None of my keys do anything when

  • Mac Pro, my displays don't work after waking up from sleep. Troubleshoot?August 26

    I've confirmed on another computer that my monitor works. The DVI cable works. My Mac Pro does successfully boot up (I hear the start-up chime, as well as the Gmail "new email" notification chime). But I can't get an actual screen to show up on

  • Mac Pro: Any way to recognize a bootable USB on startup?August 4

    I have a Mac Pro 2,1 2x6-Core [email protected] GHz and am trying to boot from several ISO images written to USB sticks. I have tried the dd-based methods as recommended by Ubuntu, with no luck. In every case the stick fails to be recognized at boot time. I

  • Will a standard (off the shelf) modern graphics card work in a Mac Pro?November 9

    I have a Mac Pro, early 2008 model with a Quad Core Intel Xeon CPU. Since 2008, I have installed the graphics card upgrade kit that Apple started selling around mid 2010, the Nvidia GTX285. I'm curious: what is special about a "Mac" graphics car

  • Error / Hang Installing Yosemite and Mavericks on Mac Pro SSDFebruary 28

    Having had a hard drive failure, I'm attempting a clean install of Yosemite on a 2010 Mac Pro, with a brand new 120GB OWC SSD. I've tried using a Yosemite boot disk, using both an external hard drive and a USB memory stick, which both suffered the sa

  • Kernel panic on Mac Pro, now nothing worksDecember 21

    I know this question has been asked before, but my situation is different because none of the recovery options are working. So, we have a Mac Pro that has boot camp on it (which boots fine). I selected the option within boot camp to reboot to OSX par

  • Boot up error prohibitory sign flashing folder with question markFebruary 2

    3 weeks ago my hard drive failed so I bought a new one. (Macbook pro late 2011) 5 days ago, the new one flashed prohibitory sign, flashing folder with question mark. Every once in a while I could get it to desktop, but I would reboot, and back into t

  • Windows will not boot after a restart of my Mac Pro, only after a cold shutdown and startupFebruary 14

    I am currently experiencing a very strange issue regarding booting into Windows 7 64-bit (installed on its own 1TB HDD). If I restart my Mac Pro, hold down the option key, and select my Windows partition, I get a black screen and the fans spin up. Ho

  • Mac Pro Boot Camp Windows 7 AIM can't video chat with other Macs using iChat

    Mac Pro Boot Camp Windows 7 AIM can't video chat with other Macs using iChatSeptember 28

    I have a Mac Pro which I've bootcamped with Windows 7 64-bit. I cannot video chat with a colleague that is on a Mac using iChat. I've tried both AIM Pro 1.5.0 and AIM with no success. I am using a Linksys WRT54G-TM - I tried following the in

Copyright (C) 2017 ceus-now.com, All Rights Reserved. webmaster#ceus-now.com 14 q. 0.686 s.