chrono807 Posted December 10, 2008 Share Posted December 10, 2008 I'm using the MSI 975x Platinum motherboard with a Q6600 CPU and 4GB of DDR2-667. I was ripping a CD in iTunes this morning and I noticed it never seemed to read any faster than 4.5x, which seems slower than I was ripping on my old non-EFI machine. I also notice that DVDs don't seem to burn as quickly as I'm used to, which is strange because my new hard drives are faster than the old ones, plus the entire machine is HFS+ because I've ditched Windows entirely. I have 3 SATA hard drives and a SATA DVD burner. I believe I have the ICH7 set to IDE mode - if I remember correctly, I got a KP after install if I tried using AHCI mode. Is this a known issue with the ICH7's SATA controller in IDE mode? Would I get better results if I plugged an IDE burner into the JMB631 instead? The new burner is the SATA version of the same one I had in my old machine. Link to comment https://www.insanelymac.com/forum/topic/140360-slow-optical-readwrite/ Share on other sites More sharing options...
adamsweeting Posted December 10, 2008 Share Posted December 10, 2008 You should really have the SATA devices in AHCI mode. If you get KP's with that enabled - you're using the wrong kext. Try and get your hardware working as AHCI devices, and you should see a speed increase. Link to comment https://www.insanelymac.com/forum/topic/140360-slow-optical-readwrite/#findComment-994074 Share on other sites More sharing options...
chrono807 Posted December 11, 2008 Author Share Posted December 11, 2008 You should really have the SATA devices in AHCI mode. If you get KP's with that enabled - you're using the wrong kext. Try and get your hardware working as AHCI devices, and you should see a speed increase. Should I be able to switch to AHCI mode without reinstalling or is this something that had to be set beforehand? Link to comment https://www.insanelymac.com/forum/topic/140360-slow-optical-readwrite/#findComment-994744 Share on other sites More sharing options...
chrono807 Posted December 14, 2008 Author Share Posted December 14, 2008 Bump... I'm afraid to try this without knowing if it's ok to change it without a reinstall cuz I don't want to lose data. Link to comment https://www.insanelymac.com/forum/topic/140360-slow-optical-readwrite/#findComment-998650 Share on other sites More sharing options...
Lanceomni Posted December 14, 2008 Share Posted December 14, 2008 I would highly recommend backing up your install. You will need a second hard drive or partition to store the image but it is well worth it as it is a hassle to reinstall. My method: Boot your install disk and select Disk Utility. Click on the drive that you have OSX installed on and Unmount it. Now go to File/New/Disk image from folder and select the drive/partition you installed OSX on. You will then be able to select a place to save the image to. Now if you have problems or borked your install you can boot back into the install disk and restore from the image you created. An added bonus is that you click on your backup image and mount it. This will allow you to pull old files from your backup. Link to comment https://www.insanelymac.com/forum/topic/140360-slow-optical-readwrite/#findComment-998670 Share on other sites More sharing options...
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