root/local_proxmox
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

docs: fix Phase 3 BIOS table for newer R730xd firmware

Browse Source 
VT for Direct I/O toggle and Hard Disk Drive Sequencing were removed
from BIOS 2.19+; VT-d is enabled by default. Add dmesg verification
step and clarify C-states should be disabled. Remove outdated note
pointing users to a nonexistent menu option.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Claude
2026-06-27 01:46:53 +00:00
parent 40fe95dec2
commit c2ca356088
1 changed files with 11 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/setup-guide.md
+11 -9
View File
@@ -54,23 +54,25 @@ fan control script to work later.
## Phase 3 — BIOS Settings
Still in F2 System Setup. These settings are **required** for GPU and USB
passthrough to work. Missing VT-d is the #1 reason passthrough fails silently.
passthrough to work.
| Menu path | Setting | Value |
|-----------|---------|-------|
| Processor Settings | Virtualization Technology | **Enabled** |
| Processor Settings | Virtualization Technology for Direct I/O | **Enabled** |
| Processor Settings | C States | **Disabled** |
| PCI Configuration | SR-IOV Global Enable | **Enabled** |
| Boot Settings → BIOS Boot Settings | Boot Mode | **UEFI** (not Legacy/BIOS) |
| System Profile Settings | System Profile | **Custom** |
| System Profile Settings | Hard Disk Drive Sequencing | **Enabled** |
| System Profile Settings | CPU Power Management | **Maximum Performance** |
> **BIOS 2.19.0 menu changes:** "VT for Direct I/O" is now labelled
> **"Virtualization Technology for Direct I/O"** — it's on the same
> Processor Settings page, scroll past the first VT toggle. The old
> "Power Management" top-level section is now **"System Profile Settings"**;
> set System Profile to **Custom** first or the sub-options stay hidden.
> **VT for Direct I/O (VT-d):** Newer R730xd BIOS versions (2.19+) removed
> this toggle — VT-d is enabled by default. Don't worry if you can't find it.
> Verify it's active after Proxmox is installed: `dmesg | grep -i iommu`
> should show `DMAR: IOMMU enabled`. The kernel cmdline (`intel_iommu=on
> iommu=pt`) in Phase 9 is still required.
>
> **Hard Disk Drive Sequencing** was also removed in newer BIOS — it is no
> longer present and is not needed.
> **Boot Mode must be UEFI.** Proxmox's EFI boot tool (`proxmox-boot-tool`)
> only works with UEFI. Legacy BIOS mode breaks the GPU passthrough script.
@@ -431,7 +433,7 @@ lspci -nnk | grep -A3 -i nvidia # must show vfio-pci
```bash
dmesg | grep -i iommu
# Should show: "DMAR: IOMMU enabled"
# If not: re-check Phase 3 BIOS settings (VT-d) and Phase 9
# If not: re-check Phase 9 cmdline (intel_iommu=on); VT-d is on by default in newer BIOS
cat /etc/kernel/cmdline # must contain intel_iommu=on iommu=pt
```