xleech

finally got back to mackintosh. I cleared nvram, made a fresh copy of EFI and tried again. Everything working so far. Keeping my fingers crossed. thanks for all your help

thanks for the suggestion. It worked. I have another problem. My display brightness cannot be adjusted.. slider does not work. TIA. config.plist.zip

I have a Dell E7240 running Catalina with Open Core using Jake Lo's EFI which has been very stable. I wanted to try upgrading to Big Sur. So I downloaded Jake Lo's OC 0.7.8 and tried to boot up using the downloaded file from a USB drive. Laptop boots up, but does not see the system APFS volumes. Same thing happens with OC 0.8.4. I would appreciate guidance.

> disable Legacy Option ROMs in BIOS was still restarting. I used the shutdown fix from Clover Configurator, and that has fixed the problem so far. >audio. Yeah! I have audio. >trackpad. I tried the other kext. Trackpad in SysPref is now populated. The performance is subpar. I can live with that.. using a mouse. You are just awsome. Thanks for all your help.

Thanks to your guidance and reworked files, I have been able to install Sierra 10.12.6 to my internal hard drive and make great progress. I am faced with a few problems I would appreciate getting advice.. 1. When I shut down from the menu, it promptly restarts. The only way I can shut down is hold the power button down. 2. No audio. BIOS says its audio is ALC3235. I am using applehda_alc293.kext from the bootpack. 3. Trackpad works (simple gestures, no multitouch). However trackpad in syspref does not show a trackpad. No trackpad. waiting for bluetooth trackpad. attached is my current clover file and a list of debug reports. CLOVER.zip debug_24400.zip

tried it. cannot boot (stops after first line.. 'OsxAptioFIDRV: starting overrides... using relic block:yes,hibernate wake: no).

Ah so.. I get it now. thanks. Yes. attached is the compressed clover folder. CLOVER.zip

here is the DSDT

My system is E7270, i7 6600, 256 Intel SSD (not NVME), installed memory 8. Non touch, 1366x768, video memory 64mb. BIOS 1.17.5 DVMT not modified.. using the Intelgraphicsdvmtfixup.kext I have tried installing with both Sierra and High Sierra installers, using the boot packs from the update page. I kept getting kernel panics with Sierra, so I moved on to High Sierra using the E7270_1175_HS bootpack and Clover v 4369. With High Sierra installer, it loads to the first screen with the Apple logos (after several screens with lots of error messages). About half the time, the screen goes black after a minute, and nothing happens. The other times, it gets to subsequent pages. When I open the disk utility, it does not recognize the internal drive. Only the external installer USB is recognized. I have tried the following, with no success: I replaced ACPI/origin/ with my own (clover F4), updated the Lilu and its plug ins to the current version, tried loading without DSDT, as suggested in another posting. When I boot up with Ubuntu, it has no trouble seeing the hard drive. I would appreciate your help. Attached is my own ACPi/origin folder.