diff --git a/images/almalinux.yaml b/images/almalinux.yaml
index e83f78b7..297d6c44 100644
--- a/images/almalinux.yaml
+++ b/images/almalinux.yaml
@@ -408,8 +408,8 @@ actions:
 
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
-
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:
@@ -424,11 +424,13 @@ actions:
 
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${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=${rootdevuuid} ro"
 
     # Regenerate initramfs
     dracut --kver "${kver}" -f
diff --git a/images/alpine.yaml b/images/alpine.yaml
index 9a3539a5..9deb6aa1 100644
--- a/images/alpine.yaml
+++ b/images/alpine.yaml
@@ -386,7 +386,8 @@ actions:
 
     target=/boot/grub/grub.cfg
     grub-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     TARGET="x86_64"
     [ "$(uname -m)" = "aarch64" ] && TARGET="arm64"
diff --git a/images/archlinux.yaml b/images/archlinux.yaml
index 04249a11..c50ebc3a 100644
--- a/images/archlinux.yaml
+++ b/images/archlinux.yaml
@@ -796,8 +796,8 @@ actions:
     grub-install --target="${TARGET}-efi" --efi-directory=/boot/efi --no-nvram --removable
     grub-install --target="${TARGET}-efi" --efi-directory=/boot/efi --no-nvram
     grub-mkconfig -o /boot/grub/grub.cfg
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
-
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /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 4f3d0e83..a1e31aea 100644
--- a/images/centos.yaml
+++ b/images/centos.yaml
@@ -831,7 +831,8 @@ actions:
 
     umount /sys/firmware
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable incus-agent-workaround.service
@@ -851,8 +852,8 @@ actions:
 
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
-
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:
@@ -867,11 +868,12 @@ actions:
 
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${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=${rootdevuuid} ro"
 
     # Regenerate initramfs
     dracut --kver "${kver}" -f
diff --git a/images/debian.yaml b/images/debian.yaml
index 7c096a01..d85e78b9 100644
--- a/images/debian.yaml
+++ b/images/debian.yaml
@@ -1478,7 +1478,8 @@ actions:
     grub-install --uefi-secure-boot --target="${TARGET}-efi" --no-nvram
 
     update-grub
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub/grub.cfg
   types:
   - vm
   releases:
diff --git a/images/fedora.yaml b/images/fedora.yaml
index c046e71d..dcd4488f 100644
--- a/images/fedora.yaml
+++ b/images/fedora.yaml
@@ -353,7 +353,8 @@ actions:
 
     target=/boot/efi/EFI/fedora/grub.cfg
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     sed -Eri "s#^(linux|initrd) .+/overlay/#\1 /#g" /boot/loader/entries/*
     sed -ri 's#^options .+#options $kernelopts#g' /boot/loader/entries/*
diff --git a/images/gentoo.yaml b/images/gentoo.yaml
index 22371a48..60e8776f 100644
--- a/images/gentoo.yaml
+++ b/images/gentoo.yaml
@@ -577,8 +577,8 @@ actions:
     rm -Rf /boot/* /boot/efi/* || true
     systemd-machine-id-setup
     bootctl install --no-variables --esp-path=/boot/efi/
-
-    echo "root=/dev/sda2" >> /etc/kernel/cmdline
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    echo "root=${rootdevuuid}" >> /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
@@ -668,7 +668,8 @@ 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
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub/grub.cfg
   types:
   - vm
   variants:
diff --git a/images/openeuler.yaml b/images/openeuler.yaml
index eb0d4089..8da621e2 100644
--- a/images/openeuler.yaml
+++ b/images/openeuler.yaml
@@ -356,8 +356,8 @@ actions:
     grub2-mkconfig -o "${target}"
 
     umount /sys/firmware
-
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable incus-agent-workaround.service
diff --git a/images/opensuse.yaml b/images/opensuse.yaml
index 65048339..2f02ad47 100644
--- a/images/opensuse.yaml
+++ b/images/opensuse.yaml
@@ -409,7 +409,8 @@ actions:
 
     grub2-mkconfig -o /boot/grub2/grub.cfg
     umount /sys/firmware
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub2/grub.cfg
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub2/grub.cfg
   types:
   - vm
 
diff --git a/images/rockylinux.yaml b/images/rockylinux.yaml
index 3edb1303..d5808308 100644
--- a/images/rockylinux.yaml
+++ b/images/rockylinux.yaml
@@ -360,7 +360,8 @@ 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}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:
@@ -374,10 +375,12 @@ actions:
     target=/boot/efi/EFI/rocky/grub.cfg
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
+
     # Update files in /boot/loader/entries/. `grubby` needs to be run after
     # `grub2-mkconfig` as the latter overwrites files in /boot/loader/entries/.
-    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=/dev/sda2 ro"
+    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=${rootdevuuid} ro"
     # Regenerate initramfs
     dracut --kver "${kver}" -f
   types:
diff --git a/images/springdalelinux.yaml b/images/springdalelinux.yaml
index 4c5636a4..9f2c7737 100644
--- a/images/springdalelinux.yaml
+++ b/images/springdalelinux.yaml
@@ -431,7 +431,8 @@ actions:
 
     umount /sys/firmware
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable incus-agent-workaround.service
@@ -452,7 +453,8 @@ actions:
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:
diff --git a/images/ubuntu.yaml b/images/ubuntu.yaml
index 0f6101a6..ee183f5d 100644
--- a/images/ubuntu.yaml
+++ b/images/ubuntu.yaml
@@ -713,7 +713,8 @@ actions:
     grub-install --uefi-secure-boot --target="${TARGET}-efi" --no-nvram
 
     update-grub
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub/grub.cfg
   types:
   - vm