diff --git a/fedac/native/Dockerfile.builder b/fedac/native/Dockerfile.builder
index 6e833126e..d9d8fb39c 100644
--- a/fedac/native/Dockerfile.builder
+++ b/fedac/native/Dockerfile.builder
@@ -22,6 +22,7 @@ RUN dnf install -y --setopt=install_weak_deps=False \
     iwlwifi-mvm-firmware wireless-regdb \
     linux-firmware linux-firmware-whence \
     intel-gpu-firmware \
+    realtek-firmware \
     alsa-sof-firmware \
     busybox mtools dosfstools hfsplus-tools hfsutils gdisk parted \
     mesa-libgbm mesa-libgbm-devel \
diff --git a/fedac/native/docker-build.sh b/fedac/native/docker-build.sh
index dcf9b911d..d310f8b8d 100644
--- a/fedac/native/docker-build.sh
+++ b/fedac/native/docker-build.sh
@@ -429,14 +429,21 @@ if [ -n "$FWDIR" ]; then
     # (Jasper Lake, Alder Lake, Tiger Lake…) and many modern laptops where
     # audio doesn't go through plain HDA. Need the main .ri blob per
     # platform plus the matching topology under sof-tplg/.
+    #
+    # Recurse: Fedora's alsa-sof-firmware puts sof-<platform>.ri under
+    # intel/sof/community/ and intel/sof/intel-signed/ (not directly under
+    # intel/sof/), so a flat glob misses them. We preserve relative paths
+    # so the kernel's firmware loader still finds them along the standard
+    # SOF_FW_PATH search (which covers both community and intel-signed).
     for subdir in intel/sof intel/sof-tplg intel/sof-ace-tplg; do
         src="$FWDIR/$subdir"
         if [ -d "$src" ]; then
             mkdir -p "$IROOT/lib/firmware/$subdir"
-            for fw in "$src"/*.ri "$src"/*.tplg "$src"/*.tplg.xz "$src"/*.ri.xz \
-                      "$src"/*.ri.zst "$src"/*.tplg.zst; do
-                [ -f "$fw" ] && cp -L "$fw" "$IROOT/lib/firmware/$subdir/"
-            done
+            (cd "$src" && find . -type f \
+                \( -name '*.ri' -o -name '*.tplg' \
+                   -o -name '*.ri.xz' -o -name '*.tplg.xz' \
+                   -o -name '*.ri.zst' -o -name '*.tplg.zst' \) \
+                -exec cp --parents -L {} "$IROOT/lib/firmware/$subdir/" \;) || true
         fi
     done
 else
diff --git a/fedac/native/kernel/config-minimal b/fedac/native/kernel/config-minimal
index 833ebf267..892d01e77 100644
--- a/fedac/native/kernel/config-minimal
+++ b/fedac/native/kernel/config-minimal
@@ -424,7 +424,7 @@ CONFIG_HOTPLUG_CPU=y
 CONFIG_LEGACY_VSYSCALL_XONLY=y
 # CONFIG_LEGACY_VSYSCALL_NONE is not set
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=tty0 quiet loglevel=3 vt.global_cursor_default=0 init=/init mitigations=off snd_hda_intel.power_save=0 nmi_watchdog=0 tsc=reliable no_timer_check acpi_backlight=native thinkpad_acpi.brightness_enable=1 i8042.reset i8042.nomux"
+CONFIG_CMDLINE="console=tty0 quiet loglevel=3 vt.global_cursor_default=0 init=/init mitigations=off snd_hda_intel.power_save=0 nmi_watchdog=0 tsc=reliable no_timer_check acpi_backlight=native thinkpad_acpi.brightness_enable=1 i8042.reset i8042.nomux reboot=efi,cold"
 # CONFIG_CMDLINE_OVERRIDE is not set
 CONFIG_MODIFY_LDT_SYSCALL=y
 # CONFIG_STRICT_SIGALTSTACK_SIZE is not set
diff --git a/fedac/native/src/ac-native.c b/fedac/native/src/ac-native.c
index 4e5109594..0f50667cc 100644
--- a/fedac/native/src/ac-native.c
+++ b/fedac/native/src/ac-native.c
@@ -1506,6 +1506,25 @@ static int auto_install_to_hd(ACGraph *graph, ACFramebuffer *screen,
                         DLOG, parent_blk, DLOG, parent_blk, DLOG,
                         parent_blk, DLOG, parent_blk, DLOG);
                     system(rcmd);
+                    // sfdisk wrote a single partition → the new ESP is p1 on
+                    // the parent disk, regardless of what partition index we
+                    // entered this branch with. Chromebook case: we arrived
+                    // via devpath=/dev/mmcblk1p12 (existing 16MB EFI-SYSTEM),
+                    // sfdisk rewrote the table to a single 1024MB entry at
+                    // p1 and wiped p12 entirely — so mkfs + mount need to
+                    // target the new partition, not the old devpath.
+                    char new_devpath[48];
+                    if (parent_blk[0] == 'n' || strncmp(parent_blk, "mmcblk", 6) == 0) {
+                        snprintf(new_devpath, sizeof(new_devpath), "/dev/%sp1", parent_blk);
+                    } else {
+                        snprintf(new_devpath, sizeof(new_devpath), "/dev/%s1", parent_blk);
+                    }
+                    if (strcmp(new_devpath, devpath) != 0) {
+                        ac_log("[install] canonicalizing devpath %s → %s after sfdisk\n",
+                               devpath, new_devpath);
+                        strncpy(devpath, new_devpath, sizeof(devpath) - 1);
+                        devpath[sizeof(devpath) - 1] = '\0';
+                    }
                     // Wait for partition device node to appear (up to 10s)
                     int devpath_ready = 0;
                     for (int wait = 0; wait < 20; wait++) {