Administrators Bronxteck Posted November 20, 2020 Administrators Share Posted November 20, 2020 in the link it says you can do it in a dos enviroment. Procedure 1. Go into the DOSsub-directory. 2. Insert a blank CD-R disc into your CD/DVD R/W drive. 3. Burn the ISO image into a CD-R media. 4. Insert the CD-R (created from the above steps) into the CD-ROM/DVD drive in the target system. 5. Boot your system from the CD/DVD drive (for instructions, please refer to the manual that came with your system). 6. Please select the targeted drive once your system boots into DOS. 7. The next screen is a warning message. It states the risks and reminds user to backup important files before proceeding. Please click "Y" to proceed. 8. Firmware upgrade will proceed. When the firmware upgrade process completes, the user will be prompted to reboot the machine. Remove the CD-R from your CD/DVD drive, and reboot your system. It will boot into Windows. 9. To confirm the firmware update was successful, open Device manager -> open SSD -> click Properties -> choose hardware ID under Details and check the firmware version. Link to comment Share on other sites More sharing options...
ronald77 Posted November 20, 2020 Author Share Posted November 20, 2020 Damn, that’s a hell of a job... and I don’t have a cd write drive, but also the latitude e7450 doesn’t have a cd/dvd drive. So that’s not an option. could the problem be something else? It had clover/catalina on it and that worked perfect. I guessed opencore/big sur was going to be easy, but was I wrong... Link to comment Share on other sites More sharing options...
ronald77 Posted November 20, 2020 Author Share Posted November 20, 2020 I see I’ve got a different cpu then @Jake Lo, my computer has an Intel Core i5-5300U processor. That would make it a broadwell chipset? Should I modify some things in my config.plist? Would that make a difference? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted November 20, 2020 Administrators Share Posted November 20, 2020 CPU model is of no influence here, except if you made use of a CPU-specific power management SSDT. But that's not the case in the pack posted by JakeLo where the generic SSDT-PLUG is provided instead. Post your full hardware specs, including model of wireless card. You may want to reset your BIOS to default and set it up again to be on the safe side of things. Thereafter, the 2 x essential settings are UEFI BIOS mode and disk in AHCI mode. Refer to this thread for guidance. Link to comment Share on other sites More sharing options...
ronald77 Posted November 28, 2020 Author Share Posted November 28, 2020 Okay, took a while to reply, but I tried it again. Put in a new SSD to be sure. Computer installs without problems. I mount the EFI's from the installer and the SSD and transfer the EFI folder from the USB installer to the EFI drive from the SSD. The I restart the computer and the problem starts all over again: 'it boots the MacHD, then reboots halfway. I get the Dell logo, it tries to boot MacHD and then it will give me that warning thing 'You need to restart you computer. Hold down the power button etc.'. And that goes on into a loop for multiple times until the machine shuts off.' I tried Reset NVRam, tried creating a new boot option in the BIOS, point it to /efi/oc/opencore.efi, doesn't work. If I put in the USB installer the machine is able to boot from the USB. I've attached some screenshots, hope anyone can help me out. screenshots.zip Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted November 30, 2020 Administrators Share Posted November 30, 2020 if you can get to desktop. then go to system settings and set your startup disk to the one you want to boot from then reboot. see if that helps. Link to comment Share on other sites More sharing options...
ronald77 Posted November 30, 2020 Author Share Posted November 30, 2020 Nope, it sees the MacHD as startup disk, but I get that same problem again... Am I missing something? Is there any 'post-install' options I need to do? Should I edit the config file after I transfer it from the USB two the harddisk? Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted November 30, 2020 Administrators Share Posted November 30, 2020 do you have more than one EFI volume maybe on a secondary drive? Link to comment Share on other sites More sharing options...
ronald77 Posted November 30, 2020 Author Share Posted November 30, 2020 No, there' s just one drive. And before it reboots to the Dell screen again, the fans start to blow for a second. Link to comment Share on other sites More sharing options...
ronald77 Posted December 1, 2020 Author Share Posted December 1, 2020 Just to be sure I'll post my EFI... EFI.zip Link to comment Share on other sites More sharing options...
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