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[Guide] Z820 - El Capitan The great guide (Sucess)

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Hi, I've installed OSX 10.11.6 El capitan in my HP Z400, and I have two problems: Audio and Firewire.


The most important problem for me it's the firewire connection, because in my work I used a firewire sound card.

My computer can't detect firewire device, by it gives energy to the device.


Do you think I could use the same firewire fix that you used in this guide to fix my firewire?


This is my system specifications:


HP Z400 hexacore x5650


BIOS version 3,57

OS X El Capitan 10.11.6 (15G31)

Nvidia Quadro NVS 300

Firewire built-in connection and PCI card.

SSD Samsung 850 Evo 500gb

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Firewire problem can be fixed editing DSDT, it is a HPET conflict.

For audio you can use Voodo


Yes, I tried to fix my DSDT with this, but it didn't work:

Device (HUB)
                Name (_ADR, 0x001E0000)  // _ADR: Address
                Name (_PRW, Package (0x02)  // _PRW: Power Resources for Wake
                Method (_S4D, 0, NotSerialized)  // _S4D: S4 Device State
                    Return (0x03)

                Method (_S5D, 0, NotSerialized)
                    Return (0x03)

                Device (FRWR)
                    Name (_ADR, 0x00090000)  // _ADR: Address
                    Name (_GPE, 0x1A)  // _GPE: General Purpose Events
                    Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
                        Store (Package (0x02)
                                Buffer (0x04)
                                     0x11, 0x58, 0xc1, 0x11                         
                            }, Local0)
                        DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                        Return (Local0)

                    Name (_SUN, 0x00000003)  // _SUN: Slot User Number

Edited by Allan
Code tag - Added

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Hi, thank you!


I was trying to work and to patch other DSDT (it seems more similar to my specifications), but firewire stills failing.


I saw this code in the DSDT, and I want to know my firewire address to change it. Do you know how can I do it?

// shdw - BEG : FRWR Device injection (was not there in original DSDT), as per info @ https://www.root86.com/topic/3193-firewire-asus-m3a79-t/
                Device (FRWR)  // shdw - lspci output : 37:05.0 FireWire (IEEE 1394) [0c00]: Agere Systems FW322/323 [11c1:5811] (rev 70)
                    Name (_ADR, 0x37050000)  // My firewire address reported by 'lspci -n'
                    Name (_GPE, 0x1A)

                    Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
                        Store (Package (0x06)
                            Buffer (One)

                            Buffer (0x04)
                                0x00, 0x00, 0x00, 0x00

                            Buffer (0x04)
                                0x11, 0x58, 0x00, 0x00  // Board device ID is [5811]
                        }, Local0)
                        DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                        Return (Local0)

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Orignal Code Extracted with ACPI Scope under windows 7   

                Name(_ADR, 0x001E0000)
                Name(_PRW, Package(0x02){0x0B, 0x04})
                Method(_S4D, 0x00, NotSerialized)
                Method(_S5D, 0x00, NotSerialized)
                Method(_PRT, 0x00, NotSerialized)
                    If (LEqual(\PICM, Zero))
                            Package(0x04){0x0004FFFF, 0x00, \_SB.PCI0.LNKE, 0x00},
                            Package(0x04){0x0004FFFF, 0x01, \_SB.PCI0.LNKF, 0x00},
                            Package(0x04){0x0004FFFF, 0x02, \_SB.PCI0.LNKG, 0x00},
                            Package(0x04){0x0004FFFF, 0x03, \_SB.PCI0.LNKH, 0x00},
                            Package(0x04){0x0009FFFF, 0x00, \_SB.PCI0.LNKH, 0x00}
                            Package(0x04){0x0004FFFF, 0x00, 0x00, 0x14},
                            Package(0x04){0x0004FFFF, 0x01, 0x00, 0x15},
                            Package(0x04){0x0004FFFF, 0x02, 0x00, 0x16},
                            Package(0x04){0x0004FFFF, 0x03, 0x00, 0x17},
                            Package(0x04){0x0009FFFF, 0x00, 0x00, 0x17}
                    Name(_ADR, 0x00040000)
                    Name(_SUN, 0x06)
                    Name(_ADR, 0x00090000)
                Method(_S3D, 0x00, NotSerialized)



Edited by Allan
Code tag - Added

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Hey all.  Having issues as well installing 10.12.4 on Z820.  Stuck at steps VII.E/F.  Audio is not being recognized.  USB is funky (USB3 ports detected as USB2 and USB2 ports are no worky).  I'm ok if USB2 ports don't work (I have a spare USB3 hub) but not having full speed USB3 kinda sucks.  LSI-2038 causes immediate reboot on kext help b7 install.  Won't boot on it's own afterwards with several different errors (sometimes a crash in the Astek drivers, othertimes elsewhere).  Booting into Recovery Mode, I can delete AstekFusion*.kext from /S/L/E and then rebuild kextcache.  And that gets me booting again.  Is there something I'm doing obviously wrong in DSDT or config.plist?


Also, wouldn't boot with nvda_drv=1 though I have latest nVidia Web Driver & CUDA Driver installed.  IPIC, TIMR, RTC had different IRQ numbers (2, 0, 8, respectively) but deleted them anyways.  Fix HPET also causes random boot issues and compilation issues.


Clover 4049

Clover Configurator 4.41.1


HP Z820

BIOS v3.91 (upgraded from 3.63)

BIOS Boot Block Date 12/28/2011

2x E5-2660 v1


nVidia Quadro K2000

Macintosh HD is a SanDisk 120GB SSD (SDSSDA120G)

LSI-2038 is connected to 3x 5TB Seagate HDD configured as a single ~15TB RAID 0 device

DSDT copy.aml.zip






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Would you mind sharing the items below?  Thanks.


BIOS Version

Clover version






Thanks again!


Thanks for this fantastic guide. I was able to successfully install, (and update), Sierra 10.12.4 on my dual e5-2690 z620.
Keep up the good work!


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Sorry, I missed this reply and I've already dumped the OS and cloned back to nix, (was only on OSX to export some old final cut projects). The BIOS ver is j61 v03.91, the boot block date is 12/28/2011 and the FW version is  I don't have the DSDT SSDT or config.plist files, but I can tell you that I ran it with the latest clover and clover configurator as of Friday, 21 April 2017. I didn't even bother with the AppleHDA and just used VoodooHDA as I knew I was going back to linux today, (need the machine for work tomorrow).
The thing ran amazingly well and I was able to export my projects and media from an old sata disk in no time.
Here it is doing work:



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Oh My GOOOOD :) That's great man : i think you have worked on it during months !!

Installed Sierra under my Z620 : got to the Part 4.....rebooted the beast...and getting the login on my screen, but no USB :'(


Should be a little thing....but what ?

Any help please ???



hum after trying all of the USB....just one is working....

and seems that my EFI partition has vanished !!!!!!!!!!!!!!!!

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Good to hear that. We need gather as info as possible about Sierra and update the guide. It seems it needs some effort again. I don´t plain update to sierra until last and stable version.


Jimmy, do you use anye raid card?

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Tieubaubau , unfortunately, those kexts come from old drivers from an outdated raid card with the same chipset than LSI2308. No longer version.


Sierra changes some game rules and it seems is the cause of the panic. We would need some developer expert to take a look and see if there is some hope :(

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Did you deviate from the guide at all? Are you using the built in raid?

Also, do mind sharing your?


BIOS Version

Clover version







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In general, I followed the guide, especially instructions about DSDT/SSDT. I hope it is obvious from the picture that I did it on Sierra, not El Capitan. I don't use raid, only a single Samsung SSD for target install and HDD instead of USB stick.   

BIOS version = 2.15.1229
Clover version = 2.4k rev 4077

DSDT/SSDT/config.plist in the attached file

The system is very stable, everything works great (all software I use, for example: LightWave 3D, Cinema 4D, RealFlow, FinalCut Pro, LogicPro X ...). As far as I can see the only glitch is when the system resumes from sleep animations in GUI are a bit laggy - probably this goes to NVidia driver. It would be nice if someone tests my configurations (in the attached file) since I think there might be a room for improvements. What I miss the most, are working USB3 ports. As I can see, only two USB2 ports are working.  

Regarding ssdt.aml, first I created SSDT for my CPU E5-2670v1. Power management seemed to work and power consumption of the system was 140W (Wattmeter is always pluged-in), but Geekbench (Multicore Score around 22k) and my renders were too slow compared to Win7. HWMonitor was showing the lowest frequency of CPU was 2.2 GHz. I was playing with the ssdtPRGen.sh script further and eventually it worked out (not sure though) with E5-2670v2 setting. 

ssdtPRGen.sh script parameters that I succeeded:

sh ssdtPRGen.sh -cpus 2 -target 0 -l 32 -c 3

After that, the lowest frequency was correct (1.2 GHz) and full performance was regained (renders as expected, i.e. 3-5% faster than Win7, Geekbench showed almost 39k). That's it. 

Tests and reports by other users are more than welcome. 

Big thanks to author's tutorial, I wouldn't manage without it. 

I made at least 400 reboots with previous OS X versions in the past but power management never worked that well.  



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Happy for read all that good news.







I made at least 400 reboots with previous OS X versions in the past but power management never worked that well.  



200 reboots was my average by month :D . Even I was afraid of break the PC.

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           -The process is splitted in two steps. The first step promises take only 4 or 5minutes … and now, it’s true!!!. It will take4 or 5 minutes(with a SSD).
           -After this first reboot, in clover boot screen, you will see more partitions than expected. APFS file system manage more partitions in a more complex way (physical layer, logical layer… bla, bla). Select  the new internal HighSierra boot installer partition, not the usb installer. It will finish the  process. This step, takes 10-15min aprox (using a SSD).
      Note.I had some unexpected reboot in this step. Only re-trying if you have it also.
      -To boot again after installation, keep booting from USB , ant then choose internal HD as clover boot screen.
      PART III:
      11. Optional updates.
      Finally, we are on High Sierra's Dektop. The Mac os Version is 17G65. In the date of this guide (oct/2018) is the last version. (there is an optional update only for real macbook laptops). For future security updates, this is the moment to update. Set up the internet options and update the system, but remember check if the Lilu and whatevergreen kexts are compatible or if you need use a new version, or you will geta KP or a black screen on boot. Update using the update app, reboot, and wait for the update installation.
      12- Install Clover.
      On first reboot, install clover again on HDD, repeating same process and same options than with the USB installer, but keep in mind you have to add some options on clover’s screen install:


           -Install RC scripts on target volume
           -Optional RC scripts
           -Install Clover Preference Panel.

      …and install clovermanager.app. This is optional but it’s the best way to manage the themes and find a good theme. I provide of one nice High Sierra Theme and the Bootcamp theme. Of course, left this for later. 
      Install clover and add same files used on the USB: config.plist , hfsplus driver and kexts. Reboot. You can now extract the USB installer and reboot from the internal HDD.
      After boot, go to clover preference panel and set it to auto mount EFI partition. It will be useful along this process. Disable this when you finish and you get stable your system.
    • By amadeusex
      Hi there y' all.
      I'm selling my hp z820 with the specs listed below since i accidentally bought me another one (that's what i told to my wife anyway).
      The machine runs flawlessly High High Sierra 10.13.6 and also has Win7 pro and Win10 pro licences tied to the machine.
      The machine is in Athens Greece
      I'm asking for 850 euros shipped within the European Union.
            Features     • Make: HP • Modell: Workstation Z820   • Processor: 2x Intel XEON Quad-Core E5-2670 • Chipset: Intel C602    • Memory: 64 GB ECC RAM • Sound: Realtek ALC262   • Graphics Card: nVidia Quadro K600   • SAS - Controller: LSI SAS2308 with RAID (0, 1, 5, 10) • SSD - 256 GB • DVD RW   • 2x Ethernet-LAN (RJ-45): 2 (Dual Gigabit - 1000Mbit/s)   • FireWire: 2x (1x Front + 1x Back) • USB 2.0: 5x (1x Front + 4x Back) • USB 3.0: 4x (2x Front + 2x Back)   • PS/2 • serial RS232 • Line-In • Line-Out • Microphone • FireWire (6polig)    • PSU: 1125 Watt    • (WxHxD): 203mm x 444mm x 525mm • Weight: 21,1kg   The machine is configured to also run MacOS 10.13.6 High Sierra without any hiccups and complete working power management.   Geekbench 4 64-bit  MacOs Results
      Geekbench 4 64-bit  Win10 Results
      The pictured drive trays are not included - the original placeholders will be mounted!

    • By Angelo_
      Just recently installed Mojave on my yoga 730(i5-8250u, 8gb of ram and 1080p 13.3" touchscreen) and got many features working, now the only issues are that my igpu is shown as only 7mb(and not metal capable, not sure whether it is or not) even tho I should've changed it from 5917 to 5916 (added both EFI folder and send me), the screen is shown as a 30.5" in system information and the cpu even tho I extracted the ssdt for it with ssdtPRGen.sh and appleintelinfo.kext to get low frequency info (ssdt was done with info 15,400,1600,3400 so it should go between 16-3400mhz and down to 400 in idle), idk what is wrong with my installation, can you guys help me or linke me something to fix those issues?
      Ps thunderbolt shows as no device found, is it regular for hackintoshes to be that way or do I need something for that too? Laptop has 2 tb3 ports as x4 pcie 3
      Send me Angeloss-MacBook-Pro.zip