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pc efi V4

The only new addition in V4 is added multiboot support with patch from

so, now u can boot logical partitions with grub, and u still can use old method with startupfiletool

more instruction about how to set up bootloader with grub is in Readme.

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Common quiestions and answers.

Q: what acpithrotle.kext for? should i install it?
A: it's only for throtling (intel speedstep, amd cool) ur cpu, if u doesn't want to do it - doesn't install it, it doesn't work with vanilla apple kernel

Q: what does vanilla kernel means ?
A: Vanilla kernel is kernel from Original developers, in this case, it's kernel from original apple's dvd or from original dmg, or from macintosh with installed leopard/tiger

Q: do i need dsmos.kext ?
A: yes , u need it for vanila kernel and pc_efi, u doesn't need it for ToH kernel

Q: do i need to use applesmbios.kext from efi_pc pkg if i use efi_pc bootloader
A: this kext offers fixes for system profiles, loginwindow crashes and etc, if u have them. U still can use vanila applesmbios.kext, if u doesn't need this fixes

Q: what cpus can run vanila kernel with pc_efi ?
A: all Core 2 Duo/Quad, pentium e2160 e2140 e2180, all core duo and core solo, celeron 420
Q:if my cpu can't run vanila kernel, can i use advantages of pc_efi?
A: yes, u can use it with ToH kernel, this kernel disable all anti-efi workaeounds if it finds efi

Q:what advantages of pc_efi?
A:U can use vanila appleacpiplatform and smbios, ur pc gets closer to real mac, and geekbench2 shows ur system as mac, not a hack.

Q: do i need hpet for vanila kernel?
A: HPET exists on most modern motherboard, but only HPET on mobos with intel chipsets supported by osx.

Q: what about AppleIntelCPUPowerManagement.kext in leopard?
A: in tiger this kext was making some cpus cooler, but in leo, this kext make cpus hoter, so, i suggest to do not use it.

Q: what is ToH kernel?
A: speedstep kernel from topic of #10.5 channel on network.

Q: Time machine doesn't work/I have error 35, what can i do to fix it ?
A: get fixed (compiled from sources, so legal) IONetworking by zef ,, unpack it and install file:
sudo cp /path/to/unpacked/IONetworkingFamily /System/Library/Extensions/IONetworkingFamily.kext/Contents/MacOS/IONetworkingFamily
sudo chown 0:0 /System/Library/Extensions/IONetworkingFamily.kext/Contents/MacOS/IONetworkingFamily
sudo rm /System/Library/Extensions.mkext
MacOSX will recreate kexts cache, then reboot, Time machine should work now and no more Error 35

Q: Installed PC_efi and trying vanilla kernel on c2d and intel-based mobo, but get reboot after kexts loaded, how can i fix it ?
A: Check No Exectuable (nx/xd) enabled in your bios, otherwise vanilla kernel will reboot.
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PC efi V3

What's new, since V1 ?
- added fsb detection for intel and amd(testing and not usefull cause modified kernel calculates it anyway)
- fixed issues with appleefinvram.kext - no need to delete any stock efi kexts anymore.
- many other small fixes.
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W00t - released.

Free Image Hosting at
it was done with special version of darwin bootloader !

this darwin bootloader can run even UNMODIFIED apple's original kernels

just replace then few kexts and u have osx86 on c2d-based cpu(P4 needs kernel modifications) and intel hpet mobo without ANY kernel modifications.
other systems requires modified kernel tho :D

release at irc, #leopard topic
don't forget to say thx for Turbo and def also

Update: fsb detection in bootloader for vanilla apple kernel done, it's in #leopard channel, last link
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Few good leopard news. UPDATED

1) leopard kernel, compiled from source, available on irc( #10.5 last link in topic)
what's inside : amd/intel hpet detection and emulation , 64-bit fix for ssse3-less cpus (pentium4 64-bit can now run 64-bit apps!), usual assortiment of fixes, speedstep works! thx to Paulicat

work is going on sse2

2) ATIRadeon2600pro/XT users can grab leo kexts (to make it works) in #radeonhd room, last link in topic

radeon 2600 pro fully works now

also some guys reported he got 2400 to work with ATY_Iago.kext from that pkg(or from tiger).

and btw

Free Image Hosting at
p.s., look at it ^^
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10.4.10 and leopard sources released. new 10.4.10 kernel

After apple released sources for 10.4.10 and leopard, we can enjoy it with 10.4.10 Universal speedstep kernel !

All files(kernel and acpithrotle.kext(by prasys)) on irc as usual
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Leopard released !

Good news to all.

There is two channels at now

#leopard is about dvd , take a look at broken stones
md5 of correct RC2 iso is 83909703A60283FFC8F3DA1D8A8594F0
all other RC2 isos are borked.
#10.5 is about leopard pc kernels (sse2/sse3/intel/amd)

what video cards will work with dvd - radeon 2600 / geforce 8800/ all other cards that worked with tiger.

Good luck and enjoy.

P.S. If u really like MacOSX - buy a mac.
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Radeon HD 2400 mobility fully working with external display

O HAI lappies.
Free Image Hosting at
Free Image Hosting at
new natit in #radeonhd , called mobility natit version

---4nooobs section----
it's "/j #radeonhd" after connecting, without ""
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AMD/ATI Radeon HD 2600 works in osx with full qe/ci. - UPDATED - PKG added

After a lot of noob-attacks, u can find easy to install pkg now, on irc Few days after mew imacs launched and Radeon hd 2600 works on PCs!

System profiler screenshot
Current status, works on hd 2600 card with 256 mb ram. full qe/ci/opengl
XT card works with original kexts (0x9588 deiv) , 2600 pro(0x9589) requires edited kexts (dev-id in plist and binary edited)
Dashboard works fine now.

no more bugs :D old: Known bugs, water effect in Dashboard result in system freeze

Quake3 , timedemo - 250 FPS.

come to #radeonhd and get all needed files in one
U still need to isntall imac software udpate via pacifist, b4 isntalling kexts from archieve, to install new rosetta (actualy ppc opengl bindings)

we need radeon hd2400 testers

What will u need to get it working, special natit version, new radeon kexts from imac software update, also rosetta files from imac software update (just install that update with pacifist or so)
opengl.framework from new imac , new kernel and system.kext,
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8.9.1 still alive

There is new 8.9.1 kernel with few improvements:

changed timer hz to 250 from default 100 (some info you can read on

truely universal kernel, works with sse2 and sleep works on sse3 (with ACPIThrotle.kext)

64-bit fix for sse3 em64t cpus (just to remind it exists)

all file in usual place on irc ( #1049)

P.S. SSE2 users may have panic related to appleintelcpupowermanagement.kext(or may not have), if so, delete that kext.
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