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[HowTo] Speed up hard disk access

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My extension properties and Xbench result are as follows. Is the result okay? Please give your opinion. Thanks.




Version: 1.7

Last Modified: 12/13/06 11:15 PM

Get Info String: 1.7, Copyright Apple Computer, Inc. 2000-2005

Location: /System/Library/Extensions/IOATAFamily.kext/Contents/PlugIns/AppleIntelPIIXATA.kext

kext Version: 1.14

Load Address: 0x1edf6000

Valid: Yes

Authentic: Yes

Dependencies: Incomplete

Dependency Errors:

com.apple.iokit.IOATAFamily: No valid version of this dependency can be found

Integrity: Kext is modified


My Xbench result:


Results 42.97

System Info

Xbench Version 1.2

System Version 10.4.8 (8L2127)

Physical RAM 512 MB

Model ACPI

Drive Type ST3160211AS

Disk Test 42.97

Sequential 76.94

Uncached Write 53.24 32.69 MB/sec [4K blocks]

Uncached Write 79.69 45.09 MB/sec [256K blocks]

Uncached Read 106.52 31.17 MB/sec [4K blocks]

Uncached Read 88.75 44.60 MB/sec [256K blocks]

Random 29.81

Uncached Write 10.54 1.12 MB/sec [4K blocks]

Uncached Write 52.82 16.91 MB/sec [256K blocks]

Uncached Read 86.99 0.62 MB/sec [4K blocks]

Uncached Read 112.04 20.79 MB/sec [256K blocks]

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Disk Test 38.71

Sequential 78.43

Uncached Write 55.68 34.19 MB/sec [4K blocks]Uncached Write 87.45 49.48 MB/sec [256K blocks]

Uncached Read 85.75 25.09 MB/sec [4K blocks]

Uncached Read 100.52 50.52 MB/sec [256K blocks]

Random 25.70

Uncached Write 9.02 0.95 MB/sec [4K blocks]

Uncached Write 50.08 16.03 MB/sec [256K blocks]

Uncached Read 67.14 0.48 MB/sec [4K blocks]

Uncached Read 101.00 18.74 MB/sec [256K blocks]


I can't understand whats my speed. Will this fix speed up my hdd too?



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Hi, I'm kinda new to this hackintosh thingy, so sorry if i'm being a noob. I followed the instruction on the first page on a jas 10.4.6 installation for my inspiron 8600 as well. I put the 2 files into the extension folder, replaced IOATAFamily.kext, and set the permission, but it gave me yellow messages with when I do -s on boot ( i forgot what the msgs are) and just froze there. Then I put back the old IOATAFamily.kext.


So i'm wondering is there any other IOATAFamily.kext file/mods that can make UDMA work for an Intel 855PM Chipset for the 10.4.6 installation. I tried searching on the forum, but mostly the guides are for nvidia chipset+newer hardwares. The disk test score is way too low as I can get around 36 mb/sec+ on linux for uncached write. This is the last thing I need to get working. Please help me if you can. Thanks in advance. :D


My XBench result w/o tweak:

Disk Test 29.23

Sequential 37.86

Uncached Write 25.11 15.42 MB/sec [4K blocks]Uncached Write 38.72 21.91 MB/sec [256K blocks]

Uncached Read 66.26 19.39 MB/sec [4K blocks]

Uncached Read 40.13 20.17 MB/sec [256K blocks]

Random 23.80

Uncached Write 8.32 0.88 MB/sec [4K blocks]

Uncached Write 49.29 15.78 MB/sec [256K blocks]

Uncached Read 73.67 0.52 MB/sec [4K blocks]

Uncached Read 71.26 13.22 MB/sec [256K blocks]

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my ATA

Name: Intel® 6300ESB Ultra ATA Storage Controller - 25A2

Device ID: PCI\VEN_8086&DEV_25A2&SUBSYS_81171043&REV_02\3&13C0B0C5&0&F9

Driver: C:\WINDOWS\system32\DRIVERS\pciide.sys, 5.01.2600.0000 (English), 8/17/2001 12:51:52, 3328 bytes

Driver: C:\WINDOWS\system32\DRIVERS\pciidex.sys, 5.01.2600.2180 (Russian), 8/3/2004 21:59:42, 25088 bytes

Driver: C:\WINDOWS\system32\DRIVERS\atapi.sys, 5.01.2600.2180 (English), 8/3/2004 21:59:44, 95360 bytes

can any body tell - this Controller supported by this method?

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Ah I dont believe it....I just did this patch and now I cant boot OS X. The erros are relating to the two kext files that ahev been replaced:


Failed to load extension com.apple.driver.AppleIntelPIIXATA.

10IOATAReg16 is not compatible with it's superclass, 8OSObject superclass changed?

Failed to load extension com.apple.driver.AppleGenericPCATA.


Any idea how I can replace the files? (I backed them up, but cant get into OS X to replace).



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Not sure if im missing anything here but when i try the command

sudo cp [path to downloaded file]/AppleIntelPIIXATA.kext ./

sudo chown -R root:wheel AppleIntelPIIXATA.kext


I got no such directory. CAn someone here walk a noob through the process. For the love of god I cannot copy the AppleIntelPIIXATA.kext to whatever folder at ./. I downloaded the AppleIntelPIIXATA.kext onto my desktop, so i used the command sudo cp /Desktop/AppleIntelPIIXATA.kext ./ but got no such directory. I browsed through this whole thread and cannot get a definite answer. Some person mention going into the package, I did that but it doesnt do anything. I can view what's inside. Is it possible just to paste the file into the extensions folder?

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