Mac Pro 1 1 Latest Os

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Model Identifier: iMac10,1 Part Number: MB950xx/A, MC413xx/A Latest compatible operating system: macOS High Sierra 10.13.6 Tech Specs: iMac (21.5-inch, Late 2009) User Guide: iMac (21.5-inch, Late 2009) iMac (24-inch, Early 2009) Model Identifier: iMac9,1 Part Number: MB418xx/A, MB419xx/A Latest compatible operating system: OS X El Capitan 10.11.6.

  1. After Apple moved the links for the EFI updating tool to download it's software, it has become more difficult to upgrade the origional Mac Pro 1,1 to 2,1.
  2. Use About This Mac to check the version of Mac operating system installed, and find out whether it's the latest (newest, most recent) version. Which macOS version is installed? From the Apple menu in the corner of your screen, choose About This Mac.
  3. Note: The headings on this list indicate the Macintosh System bundle names; the bullet points indicate the version of the System File included in that bundle. This is to make it clearer for people searching for specific bundle versions as opposed to System File versions. Finder File versions are not indicated. System 0.85 (128k) (1983) System 1.0 (128k / 512k) (1984) (also numbered System 0.97.

It’s been 17 months since Apple introduced the original Mac Pro, which shipped with two dual-core processors (an 8-core model with two quad-core CPUs was introduced in April 2007), and the new Mac Pro is a big step forward: every configuration uses quad-core Intel Xeon CPUs for even more power.

The new 45nm Harpertown CPU runs at either 2.8, 3.0, or 3.2 GHz and is designed to eventually reach 4.0 GHz; it includes 12 MB of level 2 cache per processor, and supports a very fast 1.6 GHz memory bus (vs. 1.33 GHz on the original Mac Pro). The Harpertown CPU supports lower power, cooler running 1.5V memory, which should help keep the insides of the computer cool, and Apple now uses ECC (Error Correction Code) RAM in the Mac Pro.

For graphics, ATI Radeon HD 2600 XT is the default, and you can add one, two, or three more video cards. Or you can choose an Nvidia GeForce 8800 GT or Nvidia’s top-end Quadro FX 5600.

This model add SAS (Serial Attached SCSI) support, which gives it access to 15,000 rpm hard drives for maximum performance.

If one SuperDrive isn’t enough, put in a second one for US$100 more. And you can upgrade from Apple’s regular wired keyboard and Mighty Mouse to the wireless (Bluetooth) version.

Unlike the previous Mac Pro, Bluetooth is now standard, but 802.11n AirPort Extreme remains optional.

A headphone jack, two USB 2.0 ports, a FireWire 400 port, and a FireWire 800 port are located on the front of the Mac Pro for easy access.

Uninterruptible Power Supplies

The AC power coming into your home or office is a sine wave, but some UPSes generate a square wave when you are operating from battery power. This is not good for the Mac Pro. Be sure you only use a UPS with sine wave output to avoid reducing the life of your Mac Pro.

Unsupported macOS

Although it is not officially supported, the Early 2008 Mac Pro can run macOS Sierra using Colin Mistr’s Sierra Patch Tool. However, WiFi is not supported on this device. See our macOS Sierra page for more details and a link.

Intel-based Macs use a partitioning scheme known as GPT. Only Macintel models can boot from GPT hard drives. Both PowerPC and Intel Macs can boot from APM (Apple’s old partitioning scheme) hard drives, which is the format you must use to create a universal boot drive in Leopard. Power PC Macs running any version of the Mac OS prior to 10.4.2 cannot mount GPT volumes. PowerPC Macs won’t let you install OS X to a USB drive or choose it as your startup volume, although there is a work around for that.


  • announced 2008.01.08 at $2,199 with one 2.8 GHz quad-core CPU, 2 GB RAM, 320 GB hard drive, ATI Radeon HD 2600 XT; $2,799 with two 2.8 GHz quad-core CPUs; $3,599 at 3.0 GHz; $4,399 at 3.2 GHz; replaced by faster model 2009.03.03
  • requires Mac OS X 10.5.1 Leopard through 10.11 El Capitan, macOS Sierra via patch tool – see macOS Sierra on Low End Macs. Broadcom BCM4321 WiFi module, if present, is not supported by Sierra. macOS 10.14 Mojave and later are not supported.
  • Mac OS X 10.6 Snow Leopard compatibility
    • Grand Central Dispatch is supported.
    • 64-bit operation is supported.
    • OpenCL is not supported except with the GeForce 8800 GT GPU.
  • OS X 10.8 Mountain Lion compatibility
    • AirPlay Mirroring is not supported.
    • AirDrop is not supported.
    • Power Nap is not supported.
  • CPUs: single 2.8 GHz quad-core Intel Xeon, dual 2.8, 3.0, or 3.2 GHz quad-core Intel Xeon
  • Bus: 1.6 GHz
  • Performance:
    • Geekbench 2 (Leopard): 8254 (3.2 GHz), 8088 (3.0 GHz), 7650 (2.8 GHz 8-core), 5359 (2.8 GHz 4-core)
  • RAM: 2 GB, expandable to 32 GB using pairs of 800MHz DDR2 ECC fully buffered DIMM (FB-DIMM) RAM in 8 slots
  • L2 cache: 12 MB on-chip shared cache per dual-core processor
  • L3 cache: none
  • Video GHz: ATI Radeon HD 2600 XT with 256 MB RAM in double-wide 16-lane PCIe slot
    • 2, 3, or 4 Radeon 2600 optional (add $150 per card)
    • Nvidia GeForce 8800 GT with 512 MB RAM optional (add $200)
    • Nvidia Quadro FX 5600 with 1.5 GB RAM optional (add $2,850)
  • Hard drive bus: 3 Gbps SATA Rev. 2
  • Hard drive: 320 Serial ATA 7200 rpm standard – add $100 for 500 GB hard drive, $250 for 700 GB, or $400 for 1 TB instead
  • Optical drive bus: UltraATA
  • 16x dual-layer SuperDrive standard, add second for $100
    writes DVD-R at up to 16x, DVD+R DL at 6x, reads DVDs at 16x; writes CD-R and CD-RW at up to 24x, reads at 32x
  • PCI Express: 3 open full-length slots
  • SATA: 4 independent buses
  • optional external 56k v.92 USB modem
  • Microphone: standard 3.5mm minijack, compatible with line-level input, not compatible with Apple’s PlainTalk microphone
  • FireWire: 2 FW400 ports (1 on front), 2 FW800 ports (1 on front)
  • USB: 5 USB 2.0 ports (2 on front)
  • Ethernet: 2 independent 10/100/gigabit ports
  • WiFi: optional 802.11n AirPort Extreme
  • Bluetooth: 2.0 with Enhanced Data Rate
  • size (HxWxD): 20.1″ x 8.1″ x 18.7″ (51.1 x 20.6 x 47.5 cm)
  • Weight: 42.4 lb. (19.2 kg)
  • Gestalt ID: n/a
  • PRAM battery: 3.6V half-AA
  • Part no.: MA970

Accelerators & Upgrades

  • CPU upgrades are possible

Online Resources

  • The Classic Mac Pro, Not Dead and Certainly Not Forgotten, Jay, The House of Moth, 2018.05.06. Literally thousands of user still love and use the classic “cheese grater” Mac Pro with its multitude of upgrade options.
  • ’08 Mac Pro Memory: Where You Put It Is Just as Important as How Much You Have, Other World Computing. How you distribute memory between risers makes a difference.
  • The 2008 Mac Pro value equation, Dan Knight, Mac Musings, 2008.01.09. The new Mac Pro models use quad-core Intel Xeon CPUs on a faster bus, add SAS support, and include Bluetooth. Is there any reason to buy the old ones?
  • Apple RAID Card Firmware Update, Mac News Review, 2009.09.11. For all 2006 to 2008 Mac Pro and Xserve systems with the Apple RAID card.
  • The 64-bitness of Mac OS X 10.6 ‘Snow Leopard’, Dan Knight, Mac Musings, 2009.08.19. Although Apple is promoting ‘Snow Leopard’ as a fully 64-bit operating system, it defaults to running in 32-bit mode.
  • The Road Ahead: 64-bit Computing, Dan Knight, Mac Musings, 2009.08.19. Personal computers started with 8-bit CPUs, Macs started out with a 24-bit operating system, and 32-bit computing is starting to give way to 64 bits.
  • Mac Pro beats HP and Dell at their own game: Price, Frank Fox, Stop the Noiz, 2008.05.16. Whether comparing the top-end or low-end of Mac Pro options, comparable models from Dell and HP cost more.
  • OS X 10.6 requirements, why Apple owns the high end, when to upgrade your Mac, and more, Mac News Review, 2009.08.14. Also Microsoft Word patent infringement, BackPack shelf for iMac and Cinema Displays, two updated Bible study programs, and more.
  • OS X 10.6 Snow Leopard for $29, run Windows on your Mac for Free, Update Breaks Office 2008, and more, Mac News Review, 2009.08.07. Also getting your Mac ready for Snow Leopard, Time Capsule doubles capacity, Picasa 3 for Mac, Bodega Mac app store, and more.
  • SSD in Mac Pro, Mac cloner opens store, Ubuntu vs. OS X, new Nvidia drivers, and more, Mac News Review, 2009.07.17. Also Classilla brings Firefox to OS 9, slow networking in OS X, iMac vs. Mac Pro, URL shortening software, Quicken update finally coming in 2010, and more.
  • Optimized Software Builds Bring Out the Best in Your Mac, Dan Knight, Low End Mac’s Online Tech Journal, 2009.06.30. Applications compiled for your Mac’s CPU can load more quickly and run faster than ones compiled for universal use.
  • New Mac mini and iMac benchmarked, FireWire 400-to-800 solutions, dual-band AirPort Extreme, and more, Mac News Review, 2009.03.06. Also new iMac and Mac mini dissected, OS X share still above 10%, fastest SATA boot drives for the Mac Pro, iMac keyboard loses numeric keypad, and more.
  • Ubuntu Linux and Boot camp make it easy to create a triple boot Mac, Alan Zisman, Mac2Windows, 2008.12.24. Boot Camp makes it easy to install Windows on Intel Macs, and Ubuntu now makes it easy to install Linux to a virtual Windows drive.
  • The ‘Better Safe Than Sorry’ Guide to Installing Mac OS X Updates, Charles W Moore, Miscellaneous Ramblings, 2008.12.16. Most users encounter no problems using Software Update, but some preflight work and using the Combo updater means far less chance of trouble.
  • Why You Should Partition Your Mac’s Hard Drive, Dan Knight, Mac Musings, 2008.12.11. “At the very least, it makes sense to have a second partition with a bootable version of the Mac OS, so if you have problems with your work partition, you can boot from the ’emergency’ partition to run Disk Utility and other diagnostics.”
  • The Long Term Value of a High End Mac, Andrew J Fishkin, Best Tools for the Job, 2008.11.21. Low-end Macs are more affordable up front, but the flexibility and upgrade options of a top-end Mac can make it the better value in the long run.
  • Virtualization shootout: VMWare Fusion 2 vs. Parallels Desktop 4, Kev Kitchens, Kitchens Sync, 2008.11.20. Both programs do the same thing, but one runs Windows XP smoothly alongside Mac apps, while the other bogs down everything but Windows.
  • Anticipating Macworld: Nehalem, Snow Leopard, and updated desktops, Dan Knight, Mac Musings, 2008.11.18. Intel’s Core i7 CPU has to make it way into the next Mac Pro, Nvidia GeForce graphics will drive the iMac and Mac mini, and ‘Snow Leopard’ will unleash the animal within.
  • Debunking the Apple Tax, Frank Fox, Stop the Noiz, 2008.10.31. “…no one else is offering the quality of computer construction that Apple offers in the same price range.”
  • One OS to rule them all, Frank Fox, Stop the Noiz, 2008.10.29. With Fusion or Parallels letting you run Windows at full speed, Mac OS X gives you the best of both worlds.
  • Economic crunch may slow Mac sales, a recycled Cube, ToCA Race Driver 3 for Mac, and more, Mac News Review, 2008.10.10. Also don’t buy RAM from Apple, customize your Mac’s appearance, MacTribe expanding into print, My Apple Space social networking, and more.
  • How to clone Mac OS X to a new hard drive, Simon Royal, Tech Spectrum, 2008.10.07. Whether you want to put a bigger, faster drive in your Mac or clone OS X for use in another Mac, here’s the simple process.
  • The cost of moving to Small Business Server vs. moving to Leopard Server, Andrew J Fishkin, Best Tools for the Job, 2008.10.06. Upgrading the existing SBS 2003 Server would cost less, the the server will run up against hardware limitations long before a Mac Pro does
  • OS X and Safari shares grow in September, toxic Mac Pro?, green hard drives, and more, Mac News Review, 2008.10.03. Also Vista terrible as Mac market grows, CrossOver Mac Pro reviewed, SimpleTech Pro Drives, and a new toolkit for working on computers.
  • CodeWeavers brings Google’s Chrome browser to Intel Macs, Alan Zisman, Zis Mac, 2008.10.02. Google’s new Chrome browser uses separate processes for each tab and brings other changes to Windows users. Now Mac fans can try it as well.
  • Apple Trumps Microsoft in Making the 64-bit Transition Transparent to Users, Frank Fox, Stop the Noiz, 2008.09.18. To use more than 4 GB of RAM under Windows, you need a 64-bit PC and the 64-bit version of Windows. On the Mac, OS X 10.4 and later already support it.
  • SATA, SATA II, SATA 600, and Product Confusion Fatigue, Frank Fox, Stop the Noiz, 2008.09.08. In addition to the original SATA specification and the current 3 Gb/s specification, SATA revision 3.0 is just around the corner.
  • Does running OS X system maintenance routines really do any good?, Charles W Moore, Miscellaneous Ramblings, 2008.08.26. Mac OS X is designed to run certain maintenance routines daily, weekly, and monthly – but can’t if your Mac is off or asleep.
  • Simple Mac security in the age of malware, Kev Kitchens, Kitchens Sync, 2008.08.13. Unlike Windows PCs, at this point Macs can’t become infected simply from being on the Internet, but you still need to be careful about your downloads.
  • Free VirtualBox for Mac now a virtual contender, Alan Zisman, Mac2Windows, 2008.07.21. A year ago, the Mac version of VirtualBox lacked some essential features. Over the past year, it’s grown into a very useful tool.
  • Mac Pro overclocking, Windependence with Darwine, Blu-ray for Macs, and more, Mac News Review, 2008.07.04. Also more on running Leopard on non-Apple hardware, Ubuntu on a Mac mini, the first autofocus webcam with Zeiss optics for Macs, and more.
  • Win the depreciation game by buying on the low end, Charles W Moore, ‘Book Value, 2008.06.24. The worst depreciation afflicts high-end models. By buying a less powerful version, choosing certified refurbished, or picking up a used computer, you’ll come out ahead.
  • Mac sales up 50% in May, OS X on any PC with USB dongle?, share up to 5 USB devices, and more, Mac News Review, 2008.06.20. Also intimidating people with a Mac, CherryPal’s inexpensive green ‘cloud’ computer, quad-core G5 YDP PowerStation, Radeon HD 3870 announced, and Nolobe Iris claims to be ‘the ultimate image editor for OS X’.
  • 5 business essentials for ‘The Switch’, Jason Packer, Macs in the Enterprise, 2008.06.06. If you’re planning a migration from Windows to Macs, these five steps will help you succeed in making the switch.
  • 5 reasons Macs are right for business, 10.5.3 improves GeForce 8800 performance, and more, Mac News Review, 2008.06.06. Also 3.06 GHz iMac ‘packs a wallop’, convertible keyboard for Macs, free open source virtualization software, hard drive rescue software, and more.
  • Why Dell and HP do (or don’t) beat Mac Pro pricing, Frank Fox, Stop the Noiz, 2008.05.23. Readers weigh in on why the Mac Pro is an even better value – or a worse one.
  • SheepShaver brings Classic Mac OS to Intel Macs and Leopard, Alan Zisman, Mac2Windows, 2008.05.20. Mac OS X 10.5 doesn’t support Classic Mode. Neither does Leopard. But SheepShaver lets you emulate a PowerPC Mac and run the Classic Mac OS.
  • Windows on Macs: Three paths for integration, Jason Packer, Macs in the Enterprise, 2008.05.14. Mac users have three routes for running Windows apps: Run Windows using Boot Camp or virtualization, or use a compatibility layer such as WINE.
  • Prosumer Mac suggestions, bring back the 12″ ‘Book, Pismo displays, and more, Dan Knight, Low End Mac Mailbag, 2008.05.06. Readers offer more thoughts on a midrange Mac, the need for a new 12″ ‘Book, using F-keys as F-keys in OS X, and lid closed video mode for Pismo.
  • 50% Mac sales growth is only the beginning, Dan Knight, Mac Musings, 2008.05.02. Apple has a great line of computers and an awesome operating system, but a prosumer model could make last quarter’s growth seem normal.
  • Overpriced Macs, 4-core Mac Pro value, USB for G3 PowerBooks, and more, Dan Knight, Low End Mac Mailbag, 2008.04.24. Also reader feedback on running a keyboard through the dishwasher, tips for using external DVD drives, and 8 GB partition issues with the Classic Mac OS on the beige G3.
  • Safari 3.1 fastest browser?, Macs smash sales record, Mac Pro reviews, and more, Mac News Review, 2008.03.21. Also should Mac users run antivirus software?, AirPort Express gets 802.11n, one-touch TV for Macs and iPods, security update for Tiger and Leopard, and more.
  • Mac users are snobs, Mac freeware, 5x the range with AirPort Extreme, and more, Mac News Review, 2008.02.22. Also make room for 4 more drives in the 2008 Mac Pro, basic ethernet for PCI Express, MacSpeech Dictate software shipping, problems installing Leopard when SideTrack is present, and more.
  • Safari 3.1 will be ‘crazy fast’, OS X 10.5.2 update, 20x SuperDrive from $35, and more, Mac News Review, 2008.02.15. Also Security Update for Tiger, Graphics Update for Leopard, Mac mini “as powerful as a larger desktop”, TechTool Deluxe update, and more.
  • Mac’s record market share expected to double, Safari ‘solid third’ in browsers, and more, Mac News Review, 2008.02.08. Also the future is “Apple, open source, and green”, the fastest Mac ever, and SuperDuper upgraded for Leopard support.
  • Leopard on a PC without hacking, KDE comes to OS X, new Mac Pro benchmarked, and more, Mac News Review, 2008.02.01. Also saying good-bye to .mac, a review of Apple’s aluminum keyboard, and how to disinfect your keyboard, mouse, and trackpad.
  • New Mac Pro benchmarked, OS X killing Linux?, a hardened Mac mini, and more, Mac News Review, 2008.01.18. New Mac Pro architecture reduces memory bottleneck for better performance, Mac Pro Developer Note posted, and NewerTech’s USB 2.0 Universal Drive Adapter.
  • Most powerful Mac Pro and Xserve ever, dishwashers great for cleaning keyboards, and more, Mac News Review, 2008.01.11. Also a look at the new video cards for the Mac Pro, running Classic on Intel Macs, AppleCare costs more in Canada, New User’s Guide to the Mac, and more.
  • The gaping hole in Apple’s desktop line, Tommy Thomas, Welcome to Macintosh, 2007.07.13. $599 for a Mac mini with very limited expandability, $999 for an iMac with limited expandability, or $2,200 for a the very expandable Mac Pro.
  • Pre-2006 Software: The Big Reason You Shouldn’t Buy an Intel Mac in 2006, Ted Hodges, Vintage Mac Living, 2006.11.09. If you work with software that predates the Intel transition, you may be better off sticking with PowerPC Macs. And if you use classic apps, you definitely want to avoid Intel.
  • Mac Pro (Early 2008) – Technical Specifications, Apple

Keywords: #macpro #macproearly2008 #early2008macpro #2008macpro #unsupportedsierra

Short link:

searchword: macpro2008

Hi, Low End Mac readers. My name is Robert Bryant, and I am a computer tech in Central California just south of San Jose. As a daily Mac Pro user, I wanted to provide the Low End Mac community with the necessary steps to take a base model 2006 Mac Pro 1,1 or 2007 2,1 (that can now be easily obtained for under $500) and show you how to make it as modern as any current Mac, while retaining all of the expansion that the older tower style Mac Pros provide.

Just like anyone else who frequents Low End Mac, I wanted to get more value out of my Apple hardware.

Mac Pro 1 1 Latest Os

Before going further into detail, I would like to give special thanks to MacRumors forum user “Tiamo”. Tiamo is the original modifier of the “boot.efi” file (more on that later) that allows you to run modern versions of OS X on the Mac Pro 1,1 and 2,1 which would otherwise be limited to OS X Lion 10.7.5.

About the Project


Recently, I have been helping friends upgrade their Mac Pro 1,1 and 2,1 models with OS X 10.9.3 Mavericks (and more recently 10.9.4 and have also begun experimenting with 10.10 Yosemite with some success).

The whole idea of upgrading a Mac Pro 1,1 for me started out of a curiosity: I began researching how to use the nVidia 210 Silent video card (with no native Mac drivers) in my Mac Pro 1,1 and was disappointed after many dead-ends, finding no readily available answers, but I refused to give up.

Many who I chatted with and messaged during my search for answers claimed it just wasn’t possible to use the nVidia 210 in a Mac Pro 1,1 without running Chameleon or other hackintosh tools to get OS X 10.8 Mountain Lion or later installed (a necessity for using the nVidia 210 but not technically possible due to the 32-bit EFI issue), which I found disappointing to say the least. After all, this was a genuine Mac Pro and not a hackintosh build.

After a great deal of persistence, I was thrilled to eventually find a native upgrade path (again, many thanks to Tiamo at MacRumors) that is not that hard to accomplish. Follow the steps below and you too can enjoy the affordability and upgradeability that a Mac Pro 1,1 or 2,1 can provide.

Prep Work

What you need to get started:

  • Obtain Mountain Lion (or later) installer: As you may have noticed, Apple’s App Store denies the installation of the unsupported versions of OS X because of a lack of hardware compatibility (this is typically pre-written into a bad machines list in the installer). Though all the Mac Pro hardware from the beginning has been fully 64-bit, early models that shipped between 2006 and early 2008 shipped solely with a 32-bit boot EFI and thus were artificially crippled when it came to full 64-bit operation. These models can’t run versions of OS X beyond Lion 10.7.5 without a modified boot efi.
  • Another Mac capable of booting into Mountain Lion (or later) natively: This is essential to have during the installation process in order to read the modified bootable version of OS X for installing on the Mac Pro 1,1 or 2,1 hard drive (Mavericks used in this example)

Gathering the Necessary Files


Step 1: Obtain the OS X installer for Mountain Lion or Mavericks

This can’t be easily done on the Mac Pro you are modding (there are other methods, but you will need the other Mac in step 9 as well). To get around this problem, simply begin by downloading the installer on another Mac capable of running it natively. Regardless of what you do to accomplish this step, you will need a clean, unmodified installation package of Mountain Lion, or later before proceeding (we use Mavericks in this example).

Step 2: Download or install Xcode (from Apple or from a retail copy of Snow Leopard)

You will need access to the application called “Flat package editor”. This tool is part of a package called PackageMaker, which allows you to create custom installation packages. To navigate to it after installing XCode, simply go to the following path and launch the application:


NOTE: Specific facts regarding the use of PackageMaker are readily available online and within the documentation provided as part of the XCode installation.

Step 3: Download Tiamo’s boot.efi from within his MacRumors thread

Step 4: Prepare OS X Installer

  • Step 4a: Move the OS X installer downloaded during step 1 to a simple location (such as the desktop). Inside the OSX installer contents is a folder called “Packages”. Copy the OSInstall.mpkg to your desktop. Note: Make sure you copy the .mpkg, not the .pkg
  • Step 4b: Open OSInstall.mpkg with Flat package editor and drag the “Distribution” file to your desktop.
  • Step 4c: Navigate the contents of the installer to System/Library/CoreServices/PlatformSupport.plist and copy that plist to the desktop.

Actual Modding

Step 5: Add Board ID to Supported Machines

  • Step 5a: Open “Distribution” in TextEdit and scroll until you see a list of supported machines Board ID’s. Add your machine’s board ID to this list. Save and close this file. EXAMPLE: For the Mac Pro 1,1 add board ID (F4208DC8) to the list
  • Step 5b: Next open the PlatformSupport.plist in TextEdit and perform the same process outlined in step 5a. Save and close this file.

Step 6: Replace boot.efi with Tiamo’s version

  • Step 6a: Navigate to System/Library/CoreServices/boot.efi and replace the file with Tiamo’s version.
  • Step 6b: Navigate to usr/standalone/i386/boot.efi and replace with Tiamo’s version.


  • As you can see, all of this editing is being done to the installer, not to your system
  • Many forums have long winded workarounds and have you editing your system; however, these methods are extremely inefficient and are unnecessarily complex.
  • The way I have you doing it will be the quickest and work the most often without hassles.

Step 7: Move all items modified from the OS X installer back to their original locations.

Step 8: Create a Bootable Copy of the Modified OS X Installer

Create a Mavericks (or Mountain Lion/Yosemite) bootable USB drive using the modified installer we’ve just made. A good step-by-step account of this process for creating a Mavericks USB installer is outlined at

Note: There are other methods for accomplishing this and you could choose to make a bootable DVD if you wish using proven methods.

Step 9: Attach Bootable Media and Install

Insert the bootable OS X media into a computer already running at least the same version of the OS you just downloaded (Example: Mavericks 10.9.4) and then plug your Mac Pro’s hard drive into this computer externally (use Target Disk mode or put your Mac Pro hard drive in an external enclosure). Boot from the USB Flash Drive containing the modified OS installer created in step 8 above and select the 3.5” hard drive from your Mac Pro as the install destination.

Step 10: Wrap-Up

When the installer finishes, replace the 3.5” drive into your Mac Pro (if moved to an external enclosure) and boot normally. You will see a white screen with no apple logo for approx. 15 seconds, upon which the computer will go into verbose mode and you will see it dumping unused Kernel extensions.


You’ll know that you have succeeded when you see “DSMOS IS HERE”. At that point, the Mac Pro will then boot it’s GUI.

Mac Pro 1 1 Os X 10.7


For all intents and purposes, your upgrade is complete, although there are other things to keep in mind:

  • The 64-bit EFI loader is not optimized to work with graphics cards smaller than 512 MB. The catch-22 here is that if you run a larger PC card, you will not see the verbose screen upon start up. The card will not initialize until OSX’s GUI loads, so your Mac Pro will not send signal to the monitor until fully booted. Conversely, if you stick with the Geforce 7300GT or one of the other earlier GPUs under 512 MB designed for variants of the Mac Pro, OS X will read it as a 5 MB or 7 MB graphics card instead of the 256 MB that it is. Ideally, you’ll want to have a Mac compatible card that is at least 512 MB during upgrades such as the Geforce 8800 GT.
  • Also remember that if you upgrade to the Xeon 5365 chipset like I did in order to run two quad-core CPUs instead of two dual-core CPUs, the System Report will show those processors as “2x 3ghz Unknown”. To change this natively and have the machine recognize the chips rather than fooling it by editing plists, you must find the Mac Pro 2,1 firmware update for the Mac Pro 1,1; Apple used to offer it, but has since taken it down (perhaps buried in the archives somewhere). Upon hours of searching the only place I’ve found it was and in order to download, you have to become a member. If you are interested in having me be your IT Consultant, Graphic Designer, or need help with Social Media Management or SEO visit my website you may also email me directly at [email protected].
  • To my knowledge, these steps will work on any Mac out there as long as you know your Board ID. This should also work fine with Yosemite in all scenarios. The best part is that once you have the upgrade applied with the modified boot efi, you can then begin upgrading natively from the app store and just replace the boot.efi on the hardrive in the System/Library/CoreServices folder by plugging the HDD into another Mac or by using Target Disk Mode.
  • If you have any other questions about the SMC Firmware upgrade or the 64bit EFI Bootloader process feel free to post in the Low End Mac Facebook group, and I will answer. You can also email me at the email above.
  • If you are interested in having this operation done for you, and a “Ready-to-Boot” hard drive sent to you please contact me at the email above. Yosemite is also now 100% possible, and stable!

Mac Pro 2 1 Latest Os X


A Bit of Mac Pro Humor

Keywords: #2006macpro #2007macpro

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searchword: macproefiupdate