Maybe?

export-iso/01-set-sources/01-run.sh

@@ -1,6 +1,7 @@
 #!/bin/bash -e
 
 rm -f "${ROOTFS_DIR}/etc/apt/apt.conf.d/51cache"
+rm -f "${ROOTFS_DIR}/etc/apt/sources.list.d/00-temp.list"
 find "${ROOTFS_DIR}/var/lib/apt/lists/" -type f -delete
 on_chroot << EOF
 apt-get update

export-iso/03-finalise/01-run.sh

@@ -8,9 +8,20 @@ fi
 ISO_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.iso"
 ISO_TEMP_DIR="${STAGE_WORK_DIR}/iso_temp"
 
-# Step 1: Replace fstab placeholders so initramfs-tools doesn't warn about unknown fs type.
-sed -i 's/ROOTDEV/LABEL=live-rootfs/g; s/BOOTDEV/LABEL=live-boot/g; s/EFIDEV/LABEL=live-efi/g' \
-	"${ROOTFS_DIR}/etc/fstab"
+FINAL_ISO_FILE="${DEPLOY_DIR}/${ARCHIVE_FILENAME}${IMG_SUFFIX}.iso"
+
+# Step 1: Rewrite fstab for the live environment.
+# live-boot manages the root overlay via overlayfs — fstab root entry is unused at boot.
+# Replace build-time placeholders so initramfs-tools fsck hook doesn't warn about unknown fs types.
+cat > "${ROOTFS_DIR}/etc/fstab" << 'FSTABEOF'
+# Live system fstab — root is managed by live-boot via overlayfs, not this file.
+tmpfs   /tmp    tmpfs   defaults,nosuid,nodev   0  0
+FSTABEOF
+
+if [ -f "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf" ]; then
+	sed -i 's/^update_initramfs=.*/update_initramfs=yes/' "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf"
+	sed -i 's/^MODULES=.*/MODULES=dep/' "${ROOTFS_DIR}/etc/initramfs-tools/initramfs.conf"
+fi
 
 # Step 2: Generate initramfs inside the chroot.
 # live-boot-initramfs-tools is installed so the initrd will include live-boot hooks.
@@ -21,11 +32,6 @@ if [ -x /etc/init.d/fake-hwclock ]; then
 fi
 EOF
 
-if [ -f "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf" ]; then
-	sed -i 's/^update_initramfs=.*/update_initramfs=yes/' "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf"
-	sed -i 's/^MODULES=.*/MODULES=dep/' "${ROOTFS_DIR}/etc/initramfs-tools/initramfs.conf"
-fi
-
 # Step 3: Assemble ISO directory structure
 mkdir -p "${ISO_TEMP_DIR}/boot/grub"
 mkdir -p "${ISO_TEMP_DIR}/live"
@@ -80,6 +86,11 @@ mksquashfs "${ROOTFS_DIR}" "${ISO_TEMP_DIR}/live/filesystem.squashfs" \
 	-e tmp \
 	-e run
 
+# Write filesystem metadata used by installers and live tools
+du -sx --block-size=1 "${ROOTFS_DIR}" | cut -f1 > "${ISO_TEMP_DIR}/live/filesystem.size"
+mkdir -p "${ISO_TEMP_DIR}/.disk"
+echo "ChillcraftOS Trixie - $(date +%Y-%m-%d)" > "${ISO_TEMP_DIR}/.disk/info"
+
 # Step 6: Build the ISO with grub-mkrescue (handles BIOS + UEFI automatically)
 grub-mkrescue \
 	--output="${ISO_FILE}" \
@@ -89,9 +100,8 @@ grub-mkrescue \
 
 rm -rf "${ISO_TEMP_DIR}"
 
-echo "Live ISO created at ${ISO_FILE}"
-
 # Step 7: Deploy
 mkdir -p "${DEPLOY_DIR}"
-rm -f "${DEPLOY_DIR}/${ARCHIVE_FILENAME}${IMG_SUFFIX}.iso"
-cp "${ISO_FILE}" "${DEPLOY_DIR}/${ARCHIVE_FILENAME}${IMG_SUFFIX}.iso"
+rm -f "${FINAL_ISO_FILE}"
+cp "${ISO_FILE}" "${FINAL_ISO_FILE}"
+echo "Live ISO created at ${FINAL_ISO_FILE}"