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Metabolix / HackBGRT

Windows boot logo changer for UEFI systems
MIT License
2.27k stars 242 forks source link

iMac EFI boot windows 8.1 #21

Closed Claod44 closed 6 years ago

Claod44 commented 6 years ago

Hi, My current windows 8.1 installation boots from efi (Apple iMac version). I partitioned my HDD in two : Apple HFS+/FAT32 (windows intaller converted it to NTFS) Removed the hybrid mbr with fdisk Installed windows using Apple EFI boot. So my hard drive is full GPT without bios emulation (I ain't use bootcamp utility). During the first boot, the logo was here, from the second boot it was gone. I can only see spining dots. For now I don't really know why the bootlogo is gone, bootres.dll is still here and it contains the bootlogo... But it won't shows up. I wish to fix bootres.dll, or the bootloaders.efi files, or the bgrt if Apple got one. Does HackBGRT modify the firmware files or the booloader (microsoft efi files in EFI partition) ? Do you know if it'll break my EFI ?

Thank you

Metabolix commented 6 years ago

HackBGRT doesn't modify any files or firmware, but the default installation method replaces the Windows boot loader bootmgfw.efi with HackBGRT (and makes a backup, of course).

I think Apple formats the EFI boot partition as HFS+ or APFS, which Windows probably can't access. In that case you need to install HackBGRT manually according to the multi-boot instructions (see README.md). You may need to use Linux and efibootmgr to create a boot entry for HackBGRT.