[PATCH kernel-helper] proxmox-boot: add memtest86 as entry to systemd-boot

[PATCH kernel-helper] proxmox-boot: add memtest86 as entry to systemd-boot

[Stoiko Ivanov]

memtest86+ ships a config-snippet for grub configuration, and is thus
present on installations using grub (although currently not functional
when secure-boot is enabled).

adding an equivalent entry for memtest86+ on systemd-booted systems
seems like an improvment and a step to having similar functionality in
our different boot-loader setups.

Tested by installing proxmox-kernel-helper with this patch and running
proxmox-boot-tool reinit, followed by rebooting into memtest86+ on a
systemd-booted system.

Suggested-by: Daniel Herzig <d.herzig@proxmox.com>
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
---
not 100% sure if it's worth adding, but both Daniel and I thought this might
exist and I remember missing it once on a host of mine

 src/bin/proxmox-boot-tool | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/bin/proxmox-boot-tool b/src/bin/proxmox-boot-tool
index 95d699d..b785c7d 100755
--- a/src/bin/proxmox-boot-tool
+++ b/src/bin/proxmox-boot-tool
@@ -196,6 +196,17 @@ init_bootloader() {
 			echo "timeout 3" > "$esp_mp/$PMX_LOADER_CONF.tmp"
 			echo "default proxmox-*" >> "$esp_mp/$PMX_LOADER_CONF.tmp"
 			mv "$esp_mp/$PMX_LOADER_CONF.tmp" "$esp_mp/$PMX_LOADER_CONF"
+			memtest=memtest86+x64.efi
+			memtest_conf="$esp_mp/loader/entries/$memtest.conf"
+			if [ -f "/boot/$memtest" ]; then
+				echo "Adding $memtest .."
+				cp "/boot/$memtest" "$esp_mp/EFI/"
+				cat > "$memtest_conf.tmp" <<- EOF
+					title Memory test ($memtest)
+					efi   /EFI/$memtest
+				EOF
+				mv "$memtest_conf.tmp" "$memtest_conf"
+			fi
 		fi
 	else
 		echo "Installing grub i386-pc target.."
-- 
2.47.3

Re: [PATCH kernel-helper] proxmox-boot: add memtest86 as entry to systemd-boot

[Stoiko Ivanov]

On Wed, 25 Feb 2026 19:35:03 +0100
Stoiko Ivanov <s.ivanov@proxmox.com> wrote:

> memtest86+ ships a config-snippet for grub configuration, and is thus
> present on installations using grub (although currently not functional
> when secure-boot is enabled).
> 
> adding an equivalent entry for memtest86+ on systemd-booted systems
> seems like an improvment and a step to having similar functionality in
> our different boot-loader setups.
> 
> Tested by installing proxmox-kernel-helper with this patch and running
> proxmox-boot-tool reinit, followed by rebooting into memtest86+ on a
> systemd-booted system.
forgot to add a reference to:
https://uapi-group.org/specifications/specs/boot_loader_specification/
(as it took me a short while to find where the entries syntax is defined)


> 
> Suggested-by: Daniel Herzig <d.herzig@proxmox.com>
> Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
> ---
> not 100% sure if it's worth adding, but both Daniel and I thought this might
> exist and I remember missing it once on a host of mine
> 
>  src/bin/proxmox-boot-tool | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/src/bin/proxmox-boot-tool b/src/bin/proxmox-boot-tool
> index 95d699d..b785c7d 100755
> --- a/src/bin/proxmox-boot-tool
> +++ b/src/bin/proxmox-boot-tool
> @@ -196,6 +196,17 @@ init_bootloader() {
>  			echo "timeout 3" > "$esp_mp/$PMX_LOADER_CONF.tmp"
>  			echo "default proxmox-*" >> "$esp_mp/$PMX_LOADER_CONF.tmp"
>  			mv "$esp_mp/$PMX_LOADER_CONF.tmp" "$esp_mp/$PMX_LOADER_CONF"
> +			memtest=memtest86+x64.efi
> +			memtest_conf="$esp_mp/loader/entries/$memtest.conf"
> +			if [ -f "/boot/$memtest" ]; then
> +				echo "Adding $memtest .."
> +				cp "/boot/$memtest" "$esp_mp/EFI/"
> +				cat > "$memtest_conf.tmp" <<- EOF
> +					title Memory test ($memtest)
> +					efi   /EFI/$memtest
> +				EOF
> +				mv "$memtest_conf.tmp" "$memtest_conf"
> +			fi
>  		fi
>  	else
>  		echo "Installing grub i386-pc target.."

Re: [PATCH kernel-helper] proxmox-boot: add memtest86 as entry to systemd-boot

[Hannes Laimer]

does add the entry and memtest works, consider this

Tested-by: Hannes Laimer <h.laimer@proxmox.com>

On 2026-02-25 19:37, Stoiko Ivanov wrote:
> memtest86+ ships a config-snippet for grub configuration, and is thus
> present on installations using grub (although currently not functional
> when secure-boot is enabled).
> 
> adding an equivalent entry for memtest86+ on systemd-booted systems
> seems like an improvment and a step to having similar functionality in
> our different boot-loader setups.
> 
> Tested by installing proxmox-kernel-helper with this patch and running
> proxmox-boot-tool reinit, followed by rebooting into memtest86+ on a
> systemd-booted system.
> 
> Suggested-by: Daniel Herzig <d.herzig@proxmox.com>
> Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
> ---
> not 100% sure if it's worth adding, but both Daniel and I thought this might
> exist and I remember missing it once on a host of mine
> 
>  src/bin/proxmox-boot-tool | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/src/bin/proxmox-boot-tool b/src/bin/proxmox-boot-tool
> index 95d699d..b785c7d 100755
> --- a/src/bin/proxmox-boot-tool
> +++ b/src/bin/proxmox-boot-tool
> @@ -196,6 +196,17 @@ init_bootloader() {
>  			echo "timeout 3" > "$esp_mp/$PMX_LOADER_CONF.tmp"
>  			echo "default proxmox-*" >> "$esp_mp/$PMX_LOADER_CONF.tmp"
>  			mv "$esp_mp/$PMX_LOADER_CONF.tmp" "$esp_mp/$PMX_LOADER_CONF"
> +			memtest=memtest86+x64.efi
> +			memtest_conf="$esp_mp/loader/entries/$memtest.conf"
> +			if [ -f "/boot/$memtest" ]; then
> +				echo "Adding $memtest .."
> +				cp "/boot/$memtest" "$esp_mp/EFI/"
> +				cat > "$memtest_conf.tmp" <<- EOF
> +					title Memory test ($memtest)
> +					efi   /EFI/$memtest
> +				EOF
> +				mv "$memtest_conf.tmp" "$memtest_conf"
> +			fi
>  		fi
>  	else
>  		echo "Installing grub i386-pc target.."

Re: [PATCH kernel-helper] proxmox-boot: add memtest86 as entry to systemd-boot

[Daniel Herzig]

thanks -- works as expected for my RAIDz1 2-disk setup!

Although not in the scope of this patch, I want to note that the entry 
is not created for ZFS GRUB installations (be it on legacy non-EFI, or 
secure-boot EFI), as opposed to LVM GRUB installations.

Tested-by: Daniel Herzig<d.herzig@proxmox.com>

On 2/25/26 7:37 PM, Stoiko Ivanov wrote:
> memtest86+ ships a config-snippet for grub configuration, and is thus
> present on installations using grub (although currently not functional
> when secure-boot is enabled).
>
> adding an equivalent entry for memtest86+ on systemd-booted systems
> seems like an improvment and a step to having similar functionality in
> our different boot-loader setups.
>
> Tested by installing proxmox-kernel-helper with this patch and running
> proxmox-boot-tool reinit, followed by rebooting into memtest86+ on a
> systemd-booted system.
>
> Suggested-by: Daniel Herzig <d.herzig@proxmox.com>
> Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
> ---
> not 100% sure if it's worth adding, but both Daniel and I thought this might
> exist and I remember missing it once on a host of mine
>
>   src/bin/proxmox-boot-tool | 11 +++++++++++
>   1 file changed, 11 insertions(+)
>
> diff --git a/src/bin/proxmox-boot-tool b/src/bin/proxmox-boot-tool
> index 95d699d..b785c7d 100755
> --- a/src/bin/proxmox-boot-tool
> +++ b/src/bin/proxmox-boot-tool
> @@ -196,6 +196,17 @@ init_bootloader() {
>   			echo "timeout 3" > "$esp_mp/$PMX_LOADER_CONF.tmp"
>   			echo "default proxmox-*" >> "$esp_mp/$PMX_LOADER_CONF.tmp"
>   			mv "$esp_mp/$PMX_LOADER_CONF.tmp" "$esp_mp/$PMX_LOADER_CONF"
> +			memtest=memtest86+x64.efi
> +			memtest_conf="$esp_mp/loader/entries/$memtest.conf"
> +			if [ -f "/boot/$memtest" ]; then
> +				echo "Adding $memtest .."
> +				cp "/boot/$memtest" "$esp_mp/EFI/"
> +				cat > "$memtest_conf.tmp" <<- EOF
> +					title Memory test ($memtest)
> +					efi   /EFI/$memtest
> +				EOF
> +				mv "$memtest_conf.tmp" "$memtest_conf"
> +			fi
>   		fi
>   	else
>   		echo "Installing grub i386-pc target.."

Re: [PATCH kernel-helper] proxmox-boot: add memtest86 as entry to systemd-boot

[Laurențiu Leahu-Vlăducu]

Thanks for working on this! This is certainly something that quite a few 
people have asked for over time.

For reference:
- this has been asked for on our forum [0]
- this patch fixes issue #7223 - see [1]



[0] https://forum.proxmox.com/threads/memtest86.163802/
[1] https://bugzilla.proxmox.com/show_bug.cgi?id=7223



On 25.02.26 19:37, Stoiko Ivanov wrote:
> memtest86+ ships a config-snippet for grub configuration, and is thus
> present on installations using grub (although currently not functional
> when secure-boot is enabled).
> 
> adding an equivalent entry for memtest86+ on systemd-booted systems
> seems like an improvment and a step to having similar functionality in
> our different boot-loader setups.
> 
> Tested by installing proxmox-kernel-helper with this patch and running
> proxmox-boot-tool reinit, followed by rebooting into memtest86+ on a
> systemd-booted system.
> 
> Suggested-by: Daniel Herzig <d.herzig@proxmox.com>
> Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
> ---
> not 100% sure if it's worth adding, but both Daniel and I thought this might
> exist and I remember missing it once on a host of mine
> 
>   src/bin/proxmox-boot-tool | 11 +++++++++++
>   1 file changed, 11 insertions(+)
> 
> diff --git a/src/bin/proxmox-boot-tool b/src/bin/proxmox-boot-tool
> index 95d699d..b785c7d 100755
> --- a/src/bin/proxmox-boot-tool
> +++ b/src/bin/proxmox-boot-tool
> @@ -196,6 +196,17 @@ init_bootloader() {
>   			echo "timeout 3" > "$esp_mp/$PMX_LOADER_CONF.tmp"
>   			echo "default proxmox-*" >> "$esp_mp/$PMX_LOADER_CONF.tmp"
>   			mv "$esp_mp/$PMX_LOADER_CONF.tmp" "$esp_mp/$PMX_LOADER_CONF"
> +			memtest=memtest86+x64.efi
> +			memtest_conf="$esp_mp/loader/entries/$memtest.conf"
> +			if [ -f "/boot/$memtest" ]; then
> +				echo "Adding $memtest .."
> +				cp "/boot/$memtest" "$esp_mp/EFI/"
> +				cat > "$memtest_conf.tmp" <<- EOF
> +					title Memory test ($memtest)
> +					efi   /EFI/$memtest
> +				EOF
> +				mv "$memtest_conf.tmp" "$memtest_conf"
> +			fi
>   		fi
>   	else
>   		echo "Installing grub i386-pc target.."