Jorge1964 Posted December 6, 2020 Author Share Posted December 6, 2020 I've created the USB Disk. Now, on my Dell Latitude 3440, I can't boot from the USB DISK. It Boots from windows even with the BIOS changes. When I get out of the Mac OS, I have to unmount and eject the USB Disk , right ? Success booting from USB Disk. When selecting disk to install BigSur, I choose the notebook intern SSD disk, and it tells me " This disk is locked". Can't go any further Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted December 6, 2020 Moderators Share Posted December 6, 2020 Did you format the drive with GUID / Journaled Extended? If you have Windows previously, it might be formatted to MBR. You'll have to convert it to GUID if you want to keep Windows. Otherwise, select drive from the root and formatted it. PS: is your system 3440 or 3400? 3440 is a totally different system (Haswell) and you should create a new topic for it Link to comment Share on other sites More sharing options...
Jorge1964 Posted December 6, 2020 Author Share Posted December 6, 2020 @Jake Lo In which system file , do I have to format my SSD drive to install BigSur from the USB disk ? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted December 6, 2020 Administrators Share Posted December 6, 2020 @Jorge1964, Your queries have been split to their own thread to avoid polluting @tanya's own research/advanced thread. With regards to target disk/partition, once you've booted the Big Sur installer: partition scheme: GPT (not MBR) format: HFS+, i.e. OS X Extended (Journaled) or APFS The installer will automatically convert partition to APFS if necessary. You cannot do any of this from Windows. Link to comment Share on other sites More sharing options...
Jorge1964 Posted December 6, 2020 Author Share Posted December 6, 2020 @tanya As today, what is not working, on your BigSur Latitude 3400 ? Link to comment Share on other sites More sharing options...
Jorge1964 Posted December 6, 2020 Author Share Posted December 6, 2020 @Jake Lo @tanya @Hervé I finally installed Big Sur. I have removed the USB disk. Now when system reboots it goes to BIOS. What do I need to do now ? Add a boot option in the Bios ? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted December 6, 2020 Administrators Share Posted December 6, 2020 Obviously, yes; it says so on your screenshot: "Set the order BIOS searches devices..." You will want OpenCore as #1. And you may want to remove the UEFI Boot path security to avoid the associated hassle, but it's up to you really. Link to comment Share on other sites More sharing options...
Jorge1964 Posted December 6, 2020 Author Share Posted December 6, 2020 @Hervé @Jake Lo @tanya Tanya, can you send me a print screen of your bios boot options ? When I choose to boot with open core it boots directly into the bios Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted December 7, 2020 Moderators Share Posted December 7, 2020 Sorry Hervé and I don't own this system and the BIOS setting don't look anything like my E7470 which is the latest Dell system I own, and I think Hervé has 7490. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted December 7, 2020 Administrators Share Posted December 7, 2020 Same on my 7490, BIOS UEFI menu doesn't look anything like that. I never had to manually specify any UEFI path to boot, these were automatically added. @Jorge1964, you've got to make sure you place your OpenCore EFI folder in the SSD EFI partition. Of course, you have to mount it 1st and you can do that with various tools such as Clover Configurator, OpenCore Configurator, EFIMounter or manually through Terminal commands. See here for instance. Link to comment Share on other sites More sharing options...
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