viking1304 Posted July 30, 2017 Share Posted July 30, 2017 I have E7450 (with 840m). BIOS version is A15. Latest Sierra install form app store.I followed Jake Lo's guides:https://osxlatitude.com/index.php?/topic/8514-dell-latitude-e7450-clover-uefi-only/https://osxlatitude.com/index.php?/topic/8506-dell-latitude-inspiron-precision-clover-guide/I used EFI_v4119.zip generic EFI, replaced some files with those from E7450_840m.zip as per instructions herehttps://osxlatitude.com/index.php?/topic/9740-solved-dell-latitude-e7450-intel-5500-with-discrete-nvidia-840m/?p=69173Patched both 0x15b and 0x15c, changed SATA mode to AHCI.Booting goes fine, but unfortunately initial screen where I should select language is garbled and unusable. Any advice? What I am doing (did) wrong? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted July 30, 2017 Moderators Share Posted July 30, 2017 That was just updated files, not the full bootpack. Replace with this most updated bootpack Link to comment Share on other sites More sharing options...
viking1304 Posted July 30, 2017 Author Share Posted July 30, 2017 Thank you for quick reply Jake. EDIT: I need to edit my complete post now in order to avoid possible confusion. You posted two different archives with same name and I downloaded both of them. I guess I somehow managed to add wrong one to EFI and I was getting service exited with abnormal code 1 errors So I compared files from E7450_A15_Disabled-840m.zip and E7450_840m.zip and noticed few differences in config.plist, but most noticeable difference that I noticed was (not) using NewWay <key>NewWay_80000000</key> <true/> I also noticed that some files in ACPI/patched folder are not same. Those two files are different: DSDT.aml SSDT-11.aml So I tired to replace files that I mentioned, but I still had same problem. Then I tried again with EFI_4128.zip and E7450_A15_Disabled-840m.zip. Replaced Boot and Clover folders on USB and tried again.It boots, but I have garbled screen again. I guess I need to check everything again, since I need to be sure that this time I did everything properly. btw. I knew that mentioned files were update only, so I tried to make bootpack myself before I posted here. I combined files from E7450_Sierra.zip, E7450_840m.zip and RehabMan-FakePCIID-2017-0527.zip, and then add those to EFI_v4119.zip, but obviously I messed something up. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted July 30, 2017 Moderators Share Posted July 30, 2017 Try disabling or enabling Legacy Option ROMs in the BIOS. Link to comment Share on other sites More sharing options...
viking1304 Posted July 30, 2017 Author Share Posted July 30, 2017 Enabling Legacy in BIOS helped. I installed everything with only one small issue after that. ssdPRGen complained that my i7-5600u was unknown. Downloaded new version and everything worked fine. Thank you. Link to comment Share on other sites More sharing options...
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