The grub-install, grub-bios-setup command on Linux and the grub-install.exe, grub-bios-setup.exe program on Windows require a boot partition on the GPT disk to install Grub2 for the Legacy BIOS mode. On Linux, this partition will be flagged as bios_grub.
Install Grub2 without a boot partition: https://www.aioboot.com/en/gpt-legacy/
This is a new feature of AIO Boot v0.9.8.1. It supports installing Grub2 on the GPT hard disk to boot in Legacy BIOS mode without creating a boot partition.
1. Install AIO Boot to a partition on GPT disks.
2. Run AIOCreator.exe.
3. Select Install Grub2 (Legacy) from the Tools button. This button only appears when the current hard disk is GPT and the current drive format is FAT32 or NTFS.
4. Please note that you should reinstall Grub2 every time you defragment on this drive.
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