diff --git a/images/almalinux.yaml b/images/almalinux.yaml
index 97efcab0d..46837a456 100644
--- a/images/almalinux.yaml
+++ b/images/almalinux.yaml
@@ -412,7 +412,7 @@ actions:
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
   types:
   - vm
   releases:
@@ -427,11 +427,11 @@ actions:
 
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
 
     # Update files in /boot/loader/entries/. `grubby` needs to be run after
     # `grub2-mkconfig` as the latter overwrites files in /boot/loader/entries/.
-    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=/dev/sda2 ro"
+    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=${LXD_IMAGEBUILDER_ROOT_UUID} ro"
 
     # Regenerate initramfs
     dracut --kver "${kver}" -f
diff --git a/images/alpine.yaml b/images/alpine.yaml
index 182ffd750..cba910b52 100644
--- a/images/alpine.yaml
+++ b/images/alpine.yaml
@@ -391,7 +391,7 @@ actions:
 
     target=/boot/grub/grub.cfg
     grub-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
 
     TARGET="x86_64"
     [ "$(uname -m)" = "aarch64" ] && TARGET="arm64"
diff --git a/images/archlinux.yaml b/images/archlinux.yaml
index 64a501959..b03497798 100644
--- a/images/archlinux.yaml
+++ b/images/archlinux.yaml
@@ -809,7 +809,7 @@ actions:
     grub-install --target="${TARGET}-efi" --efi-directory=/boot/efi --no-nvram --removable
     grub-install --target="${TARGET}-efi" --efi-directory=/boot/efi --no-nvram
     grub-mkconfig -o /boot/grub/grub.cfg
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" /boot/grub/grub.cfg
 
     # Rebuild initrd
     sed -i 's#^MODULES=.*#MODULES=(virtio_pci virtio_scsi virtio_console)#' /etc/mkinitcpio.conf
diff --git a/images/centos.yaml b/images/centos.yaml
index 71978c5b7..201cd6c39 100644
--- a/images/centos.yaml
+++ b/images/centos.yaml
@@ -413,11 +413,11 @@ actions:
 
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
 
     # Update files in /boot/loader/entries/. `grubby` needs to be run after
     # `grub2-mkconfig` as the latter overwrites files in /boot/loader/entries/.
-    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=/dev/sda2 ro"
+    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=${LXD_IMAGEBUILDER_ROOT_UUID} ro"
 
     # Regenerate initramfs
     dracut --kver "${kver}" -f
diff --git a/images/debian.yaml b/images/debian.yaml
index 2cb37d0d9..bfbe01686 100644
--- a/images/debian.yaml
+++ b/images/debian.yaml
@@ -1386,7 +1386,7 @@ actions:
     grub-install --uefi-secure-boot --target="${TARGET}-efi" --no-nvram
 
     update-grub
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" /boot/grub/grub.cfg
   types:
   - vm
 
diff --git a/images/fedora.yaml b/images/fedora.yaml
index 8d343623f..a79e5e1f2 100644
--- a/images/fedora.yaml
+++ b/images/fedora.yaml
@@ -342,7 +342,7 @@ actions:
 
     target=/boot/efi/EFI/fedora/grub.cfg
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
 
     sed -Eri "s#^(linux|initrd) .+/overlay/#\1 /#g" /boot/loader/entries/*
     sed -ri 's#^options .+#options $kernelopts#g' /boot/loader/entries/*
diff --git a/images/gentoo.yaml b/images/gentoo.yaml
index 6575d800b..9e2c00226 100644
--- a/images/gentoo.yaml
+++ b/images/gentoo.yaml
@@ -583,7 +583,7 @@ actions:
     systemd-machine-id-setup
     bootctl install --no-variables --esp-path=/boot/efi/
 
-    echo "root=/dev/sda2" >> /etc/kernel/cmdline
+    echo "root=${LXD_IMAGEBUILDER_ROOT_UUID}" >> /etc/kernel/cmdline
 
     echo "sys-apps/systemd kernel-install" >> /etc/portage/package.use/systemd
     echo "sys-kernel/installkernel dracut systemd systemd-boot" >> /etc/portage/package.use/installkernel
@@ -673,7 +673,7 @@ actions:
     grub-install --target=${TARGET}-efi --no-nvram --removable
     grub-install --target=${TARGET}-efi --no-nvram
     grub-mkconfig -o /boot/grub/grub.cfg
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" /boot/grub/grub.cfg
   types:
   - vm
   variants:
diff --git a/images/openeuler.yaml b/images/openeuler.yaml
index 1fd5fce50..16422c243 100644
--- a/images/openeuler.yaml
+++ b/images/openeuler.yaml
@@ -342,7 +342,7 @@ actions:
 
     umount /sys/firmware
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable lxd-agent-workaround.service
diff --git a/images/opensuse.yaml b/images/opensuse.yaml
index a89b55a77..708be29ec 100644
--- a/images/opensuse.yaml
+++ b/images/opensuse.yaml
@@ -407,7 +407,7 @@ actions:
 
     grub2-mkconfig -o /boot/grub2/grub.cfg
     umount /sys/firmware
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub2/grub.cfg
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" /boot/grub2/grub.cfg
   types:
   - vm
 
diff --git a/images/rockylinux.yaml b/images/rockylinux.yaml
index 076222f42..af432cd76 100644
--- a/images/rockylinux.yaml
+++ b/images/rockylinux.yaml
@@ -343,7 +343,7 @@ actions:
     dracut --kver "${kver}" -f
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
   types:
   - vm
   releases:
@@ -357,10 +357,10 @@ actions:
     target=/boot/efi/EFI/rocky/grub.cfg
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
     # Update files in /boot/loader/entries/. `grubby` needs to be run after
     # `grub2-mkconfig` as the latter overwrites files in /boot/loader/entries/.
-    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=/dev/sda2 ro"
+    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=${LXD_IMAGEBUILDER_ROOT_UUID} ro"
     # Regenerate initramfs
     dracut --kver "${kver}" -f
   types:
diff --git a/images/springdalelinux.yaml b/images/springdalelinux.yaml
index c688c8f45..05f55dc83 100644
--- a/images/springdalelinux.yaml
+++ b/images/springdalelinux.yaml
@@ -438,7 +438,7 @@ actions:
 
     umount /sys/firmware
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable lxd-agent-workaround.service
@@ -459,7 +459,7 @@ actions:
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" "${target}"
   types:
   - vm
   releases:
diff --git a/images/ubuntu.yaml b/images/ubuntu.yaml
index fa4baab69..b4e468b96 100644
--- a/images/ubuntu.yaml
+++ b/images/ubuntu.yaml
@@ -643,7 +643,7 @@ actions:
     grub-install --uefi-secure-boot --target="${TARGET}-efi" --no-nvram
 
     update-grub
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    sed -i "s#root=[^ ]*#root=${LXD_IMAGEBUILDER_ROOT_UUID}#g" /boot/grub/grub.cfg
   types:
   - vm