![]() ![]() On most computers, there's a firmware setting to enable BIOS/CSM/legacy support (any of those three terms may be used), and disabling that setting will usually force an EFI-mode boot. Unfortunately, I know little enough about Windows recovery tools that I can't point you to specific disk images or procedures, except to point out that such tools may be bootable in both BIOS/CSM/legacy and EFI/UEFI modes, and controlling the boot mode can be tricky. In principle, you could find a Windows recovery disk that boots in EFI mode, enable EFI/UEFI-mode boot support in your firmware, boot to the Windows recovery disk, and use it to install your firmware update. Option 2: Install Firmware Update via Temporary UEFI-mode Boot They may be willing to provide you with a suitable file. (Be prepared to try several archive tools before you figure out what the file actually is.) Another option is to ask Lenovo about this, or dig further for it on their site. exe file might expose a file that your firmware will take. zip or other archives with executable wrappers that extract files and do things with them. exe files for installing firmware updates are actually. If so, the trick is to find a suitable file to feed it. You may be able to find an option in your firmware setup utility to update the firmware. Option 1: Find Another Way to Install the Firmware Update I strongly recommend you research all of these options before proceeding. Three possibilities occur to me, although one violates the details of what you're asking to do but not the spirit, and I can make no promises that any of these approaches would work. Select custom, delete the existing FreeDos partition, and install Windows on the blank space. Start machine - boots from disk-on-key into Windows installation.Note that I tried to set boot to UEFI-only, but then it wouldn't recognize the disk-on-key.Now disk-on-key is selectable - set it as first boot device. Enter machine BIOS ( Fn+ F2), set boot to legacy support (may have been the default, don't remember), restart and enter BIOS again.Download a Windows 10 64-bit ISO, and create a USB disk-on-key using Windows USB/DVD Download Tool.Question: Is there a way to update the BIOS without re-formatting the drive to GPT? However, this means that I need to delete the entire partition, which I don't want to. This thread suggests it's because I partitioned the drive with MBR, and says that he managed to update the BIOS after re-installing windows using an installation Disk-on-Key creating with stick using Rufus with GPT-type UEFI. I then wanted to update its BIOS/UEFI from the factory 2.00 to 2.02 from the above link, but this failed with: I clean-installed Windows 10 v1703 on it (installation details below). I just bought a new Lenovo IdeaPad 510S-14IKB 80UV without OS. ![]()
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