X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=system-booting.adoc;h=24ceb7ee91df8ed7b2809ea0763193bad64d9d48;hb=dd0eca0da52d3079e1782d8367c9c1472703185a;hp=fcfe6c4dcb205f56ddaab563cb200644aa3d5cb4;hpb=ab2bc36e6512b151d2ef653da3c4faaa4444e693;p=pve-docs.git

diff --git a/system-booting.adoc b/system-booting.adoc
index fcfe6c4..24ceb7e 100644
--- a/system-booting.adoc
+++ b/system-booting.adoc
@@ -12,8 +12,9 @@ For EFI Systems installed with ZFS as the root filesystem `systemd-boot` is
 used. All other deployments use the standard `grub` bootloader (this usually
 also applies to systems which are installed on top of Debian).
 
+
 [[sysboot_installer_part_scheme]]
-Partitioning scheme used by the installer
+Partitioning Scheme Used by the Installer
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The {pve} installer creates 3 partitions on the bootable disks selected for
@@ -39,6 +40,45 @@ The created partitions are:
 Partition of all bootable disks for supporting older systems.
 
 
+[[sysboot_determine_bootloader_used]]
+Determine which Bootloader is Used
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+[thumbnail="screenshot/boot-grub.png", float="left"]
+
+The simplest and most reliable way to determine which bootloader is used, is to
+watch the boot process of the {pve} node.
+
+You will either see the blue box of `grub` or the simple black on white
+`systemd-boot`.
+
+[thumbnail="screenshot/boot-systemdboot.png"]
+
+Determining the bootloader from a running system might not be 100% accurate. The
+safest way is to run the following command:
+
+
+----
+# efibootmgr -v
+----
+
+If it returns a message that EFI variables are not supported, `grub` is used in
+BIOS/Legacy mode.
+
+If the output contains a line that looks similar to the following, `grub` is
+used in UEFI mode.
+
+----
+Boot0005* proxmox	[...] File(\EFI\proxmox\grubx64.efi)
+----
+
+If the output contains a line similar to the following, `systemd-bood` is used.
+
+----
+Boot0006* Linux Boot Manager	[...] File(\EFI\systemd\systemd-bootx64.efi)
+----
+
+
 [[sysboot_grub]]
 Grub
 ~~~~
@@ -196,8 +236,9 @@ sync all kernels and initrds.
 NOTE: Both `update-initramfs` and `apt` (when necessary) will automatically
 trigger a refresh.
 
+
 [[sysboot_edit_kernel_cmdline]]
-Editing the kernel commandline
+Editing the Kernel Commandline
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 You can modify the kernel commandline in the following places, depending on the