Moderators Jake Lo Posted February 21, 2015 Moderators Share Posted February 21, 2015 Try this. Bootpack on post #2 Link to comment Share on other sites More sharing options...
wern Posted March 25, 2015 Share Posted March 25, 2015 Can someone test if the dock PR03X has only mono mic input ?, only the right channel is working, but boot speakers gives me output. Thank you Link to comment Share on other sites More sharing options...
Unremembered Posted April 25, 2015 Share Posted April 25, 2015 I have a problem with Yosemite installation on E6420. After preparing USB disk using this guide, I connected it to the laptop and boot Installer with '-v -f' flags. A lot of diagnostic information were displayed Read HFS+ file: and... reboot. Installer isn't able to boot. First I thought, I forgot to add MBR fix or added wrong kernel, but adding them didn't made any difference. I'm guessing, reboot was caused by Kernel Panic, but I ran out of ideas, what is causing KP... Maybe somebody had a similar problem? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted April 25, 2015 Moderators Share Posted April 25, 2015 Don't use MBR unless you already have Windows on MBR and wanted to dual boot. You can still dual boot with GUID for Windows 7 64bit SP1 and up. Kernel, make sure to the regular kernel, not the haswell Kernel. And lastly, choose the correct DSDT for your config and rename it to DSDT.aml. Looking at your signature, you should select DSDT-nvs.aml Link to comment Share on other sites More sharing options...
Unremembered Posted April 25, 2015 Share Posted April 25, 2015 Thank you for answer. I have new (not used) HDD, so either MBR or UEFI is fine. I checked and corrected configuration as you advised, but bios wasn't able to boot USB disk in UEFI. I had to manually (F12) boot it legacy, just to find that it didn't helped... Maybe do you have other ideas? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted April 25, 2015 Moderators Share Posted April 25, 2015 Are you using Clover or Chameleon? Chameleon would be a little easier, just follow my guide. You can switch to Clover once you got it up and running. Link to comment Share on other sites More sharing options...
Unremembered Posted April 25, 2015 Share Posted April 25, 2015 I followed your guide, so I'm using Chameleon. ###EDIT It turns out, that Chameleon 2.2 caused this issue. After update to 2.3svn installer booted without any issues. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted April 26, 2015 Moderators Share Posted April 26, 2015 Oh, I guess you didn't use the version I have in the guide. It was 2.3svn r2437 Link to comment Share on other sites More sharing options...
Unremembered Posted April 26, 2015 Share Posted April 26, 2015 Oh, my mistake, I was checking 2.3 from your guide. SVN2538 was able to boot Installer. Right now I have a problem with LVDS screen. Yosemite simply do not recognize screen. If I connect monitor via HDMI, I see, that installation has been successful. The thing is, I was able to install using LVDS screen, system is booting on LVDS and after boot it stopping recognizing it... Link to comment Share on other sites More sharing options...
wern Posted April 26, 2015 Share Posted April 26, 2015 If you intend to use the nVidia card (optimus disabled) you can try this dsdt.aml http://www.insanelymac.com/forum/files/file/342-latitude-e6420-nvs-4200-dsdtaml/ Link to comment Share on other sites More sharing options...
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