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-rw-r--r--data/live-build-config/includes.chroot/opt/vyatta/etc/grub/default-union-grub-entry4
1 files changed, 4 insertions, 0 deletions
diff --git a/data/live-build-config/includes.chroot/opt/vyatta/etc/grub/default-union-grub-entry b/data/live-build-config/includes.chroot/opt/vyatta/etc/grub/default-union-grub-entry
index 49f4afc4..213adf43 100644
--- a/data/live-build-config/includes.chroot/opt/vyatta/etc/grub/default-union-grub-entry
+++ b/data/live-build-config/includes.chroot/opt/vyatta/etc/grub/default-union-grub-entry
@@ -1,3 +1,7 @@
+# This file is only needed to support upgrades from the legacy image management
+# tools. Example would be an upgrade from VyOS 1.3.8 -> 1.5 (which is officially
+# unsupported, but we always try our best). This is also the reason why we can
+# leave the ttyS0 console in this file - there was no ARM64 image for VyOS 1.3!
menuentry "VyOS (KVM console)" {
linux /boot//vmlinuz boot=live quiet rootdelay=5 noautologin net.ifnames=0 biosdevname=0 udev.exec_delay=3 vyos-union=/boot/ console=ttyS0,115200 console=tty0
initrd /boot//initrd.img