Legacy > UEFI Bootloader
Legacy > UEFI Bootloader
I'm looking at these Windows 7 laptops and trying to upgrade them to Windows 11. They have outdated BIOS that won't boot from an EFI partition, but I can manually select it during startup. Installing a bootloader like Clover could help the BIOS load the OS automatically. Have you tried this approach before? What worked or didn’t work for you?
These devices don't support Windows 11. Running Windows 11 will likely cause significant performance issues because the CPU doesn't have the required security features it expects. Battery endurance will also decrease. The operating system needs a solid-state drive; it isn't optimized for traditional hard drives, especially after recent Windows 10 updates. UEFI could be outdated for older systems, and most brands use a hybrid version tailored for Windows 7. Updating the BIOS might improve compatibility, possibly working with Windows 8 as well.
I understand these concerns fully, though I don’t see much urgency about it. These systems already support SSD upgrades. Updating isn’t an issue since there haven’t been any releases publicly announced. As you know, the BIOS doesn’t automatically search for EFI bootloaders during initial setup, but it can find them when you manually select boot.
This update was not what I expected. Acer did provide new UEFI patches, but they restricted the upgrade flow. The BIOS update tool verifies versions and will block the change, even if compatible (Legacy BIOS 1.x vs UEFI 2.x). It seems a hex editor might bypass the check, though I couldn't locate instructions matching my updater's file layout. If anyone has experience, feel free to share! BIOS_Acer_2.14_A_A.zip
Problem solved! After watching a Russian youtube video, and reading a very sparse "guide" I was able to figure out how to edit the BIOS and configuration files to bypass the version check. I just tested it out on one of the systems, and it now has all the UEFI boot options, which is great since I won't have to futz with a separate bootloader. For future reference (since it wasn't included in the OP), this is an Acer Aspire V3-551, and I just updated the the BIOS from V1.04 to 2.14. I will attach the modded BIOS in an attempt to help others. However, if anyone wants to try this, PLEASE make sure this is the correct BIOS for your system. I am not responsible for bricked systems. modded BIOS.zip