How to Use BIOS with Different Operating Systems - Complete Guide

Question: Which BIOS settings for different OS?

Answer: OS-specific BIOS configuration

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Windows BIOS Settings

Windows 10/11

# Use UEFI
qm set 100 --bios ovmf
 
# Add EFI disk
qm set 100 --efidisk0 local:1G
 
# Secure boot (optional)
qm set 100 --secureboot 1

Windows 7 (Legacy)

# Use SeaBIOS
qm set 100 --bios seabios
 
# IDE disk
qm set 100 --ide0 local:32

Windows XP (Legacy)

# Use SeaBIOS
qm set 100 --bios seabios
 
# IDE required
qm set 100 --ide0 local:20

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Linux BIOS Settings

Ubuntu 20.04+

# UEFI recommended
qm set 100 --bios ovmf
qm set 100 --efidisk0 local:1G
 
# Secure boot enabled by default

CentOS/RHEL

# UEFI
qm set 100 --bios ovmf
qm set 100 --efidisk0 local:1G

Old Linux (Pre-UEFI)

# Use SeaBIOS
qm set 100 --bios seabios

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macOS BIOS Settings

macOS (Hackintosh)

# OVMF required
qm set 100 --bios ovmf
 
# EFI disk
qm set 100 --efidisk0 local:1G

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Keywords

os windows linux macos compatibility how-to

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