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HOWTO: SB450 SATA Support for ATI Chipsets


PaulusUK
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Dear Fellow OSX86 users!

 

I feel I have thoroughly scowered the forums for random help alot but have not found a complete guide for SATA support under the SB450 chipset (afaik it's only on the rdx200 motherboards) , so it's time to (try!) and give some kind of untested guide:

 

Ok.. download the attachment and place it into your /System/Library/Extensions folder.. just drag it in (overwriting the old file), and then type your password when prompted.

 

Delete AppleVIAATA.kext from this extensions folder.

 

Now open the console and

sudo -s
(now you type your password)
cd /System/Library/Extensions/
chmod -R 755 IOATAFamily.kext
chown -R root:wheel IOATAFamily.kext

I think thats it!

 

but to be safe..

cd ..
rm Extensions.kextcache
kextcache -k /Extensions

 

Now reboot :)

 

2 Success stories so far, so I look forward to some results(good and bad).

 

I can't guarantee this will 100% work, but it's worth a go!

 

 

Allot of credit is due to Zappadoc and particully diegooo from these two threads (which I used to make this)

http://forum.insanelymac.com/index.php?sho...97&hl=SB450

http://forum.insanelymac.com/index.php?sho...51&hl=sb450

 

P.s I Don't know how clever this method is, as it involves deleting some kext- which doesn't seem too smart- but it works, so meh.

IOATAFamily.kext.zip

Edited by PaulusUK
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Unbelieveable it works! Thank you so much! I'm going to reinstall Os X again now on my sata disk :P Should be much faster! Thnx!

 

what I do notice is now that I've added it to my current installtion on my IDE disk it boots much slower (double time) but the performance in system is still the same.

 

I also see some dependancy errors:

 

com.apple.iokit.IOATAFamily: there has been found no valid version of dependancy

 

apperently it causes slow boot times, how can we fix this?

Edited by PascalW
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I also get the Diskarb errors. It's definatly to do with what we've done unfortunatly :thumbsup_anim:

 

No idea about raid PascalW, but from what i've read it's unlikely to work :/ No harm in trying.

 

I got a massive speed increase using this method, but thats because I was switching from the crappy ATI IDE driver thats got some problems.. If your switching from IDE to SATA you may not get much of an increase as Hard drives only read around 100MBs max, so they arn't fully utilized under ATA133 even.

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I also get the Diskarb errors. It's definatly to do with what we've done unfortunatly :)

 

No idea about raid PascalW, but from what i've read it's unlikely to work :/ No harm in trying.

 

I got a massive speed increase using this method, but thats because I was switching from the crappy ATI IDE driver thats got some problems.. If your switching from IDE to SATA you may not get much of an increase as Hard drives only read around 100MBs max, so they arn't fully utilized under ATA133 even.

 

I was switching from the ATI ATA driver to, but that wasn't so bad at all. I do notice quite much improvement though. Only to bad from the diskarb errors and that causing very slow boot up. My ata disk even booted much faster :) But well we can't have all right, faster system is more important to me then fast bootup. But maybe we can find a way to kill the diskarb errors.

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  • 3 weeks later...

This worked on my toshiba laptop. running osx86 natively is just freaking amazing. One problem, when diskutil fixes the permissions on the drive, it stops booting. And on my machine after deleting the other file, I wasn't able to boot my partiiton in vmware to fix it. I'm looking into a fix for it though.

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