diff --git a/db845c.mk b/db845c.mk
index 1f271bc..72b2c26 100644
--- a/db845c.mk
+++ b/db845c.mk
@@ -12,6 +12,8 @@
   TARGET_USES_BOOT_HDR_V3 ?= false
 endif
 
+TARGET_SDCARD_BOOT ?= false
+
 # Product overrides
 PRODUCT_NAME := db845c
 PRODUCT_DEVICE := db845c
diff --git a/db845c/BoardConfig.mk b/db845c/BoardConfig.mk
index 1d00b6c..881dbc7 100644
--- a/db845c/BoardConfig.mk
+++ b/db845c/BoardConfig.mk
@@ -19,14 +19,30 @@
 
 TARGET_NO_KERNEL := false
 BOARD_INCLUDE_DTB_IN_BOOTIMG := true
-ifeq ($(TARGET_USES_BOOT_HDR_V3), true)
- BOARD_BOOT_HEADER_VERSION := 3
- BOARD_KERNEL_CMDLINE += androidboot.hardware=db845c androidboot.boot_devices=soc@0/1d84000.ufshc
- BOARD_KERNEL_CMDLINE += androidboot.verifiedbootstate=orange
-else
- BOARD_BOOT_HEADER_VERSION := 4
- BOARD_BOOTCONFIG += androidboot.hardware=db845c androidboot.boot_devices=soc@0/1d84000.ufshc
- BOARD_BOOTCONFIG += androidboot.verifiedbootstate=orange
+ifeq ($(TARGET_SDCARD_BOOT), true)
+  BOARD_BOOT_HEADER_VERSION := 2
+  # Older kernel versions define mmc@ nodes as sdhci@ nodes in their device tree
+  ifneq ($(filter 5.4 5.10 5.15, $(TARGET_KERNEL_USE)),)
+    BOARD_KERNEL_CMDLINE += androidboot.boot_devices=soc@0/8804000.sdhci
+  else
+    BOARD_KERNEL_CMDLINE += androidboot.boot_devices=soc@0/8804000.mmc
+  endif
+  BOARD_KERNEL_CMDLINE += androidboot.hardware=db845c
+  BOARD_KERNEL_CMDLINE += androidboot.verifiedbootstate=orange
+  # In case we are booting from U-Boot directly and androidboot.slot_suffix
+  # is not set. Otherwise we run into the following error:
+  # "init: [libfstab] Error updating for slotselect"
+  BOARD_KERNEL_CMDLINE += androidboot.slot_suffix=_a
+else ifeq ($(TARGET_USES_BOOT_HDR_V3), true)
+    BOARD_BOOT_HEADER_VERSION := 3
+    BOARD_KERNEL_CMDLINE += androidboot.boot_devices=soc@0/1d84000.ufshc
+    BOARD_KERNEL_CMDLINE += androidboot.hardware=db845c
+    BOARD_KERNEL_CMDLINE += androidboot.verifiedbootstate=orange
+  else
+    BOARD_BOOT_HEADER_VERSION := 4
+    BOARD_BOOTCONFIG += androidboot.boot_devices=soc@0/1d84000.ufshc
+    BOARD_BOOTCONFIG += androidboot.hardware=db845c
+    BOARD_BOOTCONFIG += androidboot.verifiedbootstate=orange
 endif
 BOARD_MKBOOTIMG_ARGS := --header_version $(BOARD_BOOT_HEADER_VERSION)
 BOARD_KERNEL_BASE := 0x80000000
@@ -40,12 +56,18 @@
 
 # Image Configuration
 BOARD_BOOTIMAGE_PARTITION_SIZE := 100663296 #96M
-BOARD_VENDOR_BOOTIMAGE_PARTITION_SIZE := 100663296 #96M
-BOARD_USERDATAIMAGE_PARTITION_SIZE := 21474836480 #20G
 BOARD_FLASH_BLOCK_SIZE := 4096
-# Super partition
-BOARD_SUPER_PARTITION_SIZE := 12437225472
-BOARD_DB_DYNAMIC_PARTITIONS_SIZE := 12433031168 # Reserve 4M for DAP metadata
+ifeq ($(TARGET_SDCARD_BOOT), true)
+  BOARD_USERDATAIMAGE_PARTITION_SIZE := 8589934592 #8G
+  BOARD_SUPER_PARTITION_SIZE := 4294967296 #4G
+  BOARD_DB_DYNAMIC_PARTITIONS_SIZE := 4290772992 # Reserve 4M for DAP metadata
+  BOARD_SEPOLICY_DIRS += device/linaro/dragonboard/shared/utils/sdcard-boot/sepolicy/
+else
+  BOARD_VENDOR_BOOTIMAGE_PARTITION_SIZE := 100663296 #96M
+  BOARD_USERDATAIMAGE_PARTITION_SIZE := 21474836480 #20G
+  BOARD_SUPER_PARTITION_SIZE := 12437225472
+  BOARD_DB_DYNAMIC_PARTITIONS_SIZE := 12433031168 # Reserve 4M for DAP metadata
+endif
 BOARD_SUPER_PARTITION_METADATA_DEVICE := super
 BOARD_SUPER_IMAGE_IN_UPDATE_PACKAGE := true
 BOARD_DB_DYNAMIC_PARTITIONS_PARTITION_LIST := system vendor system_ext product
diff --git a/device-common.mk b/device-common.mk
index c8756d9..a37f726 100644
--- a/device-common.mk
+++ b/device-common.mk
@@ -18,7 +18,14 @@
 TARGET_MODS := $(wildcard $(TARGET_KERNEL_DIR)/*.ko)
 
 BOARD_DO_NOT_STRIP_VENDOR_RAMDISK_MODULES := true
-BOARD_VENDOR_RAMDISK_KERNEL_MODULES := $(TARGET_MODS)
+BOARD_DO_NOT_STRIP_GENERIC_RAMDISK_MODULES := true
+ifeq ($(TARGET_SDCARD_BOOT), true)
+  # UFS module filename varies from ufs_qcom.ko to ufs-qcom.ko across different kernel versions
+  BOARD_VENDOR_KERNEL_MODULES := $(wildcard $(TARGET_KERNEL_DIR)/ufs*qcom.ko)
+  BOARD_GENERIC_RAMDISK_KERNEL_MODULES := $(filter-out $(BOARD_VENDOR_KERNEL_MODULES),$(TARGET_MODS))
+else
+  BOARD_VENDOR_RAMDISK_KERNEL_MODULES := $(TARGET_MODS)
+endif
 
 PRODUCT_SHIPPING_API_LEVEL := 31
 
@@ -63,10 +70,24 @@
     system_ext \
     vendor
 
+ifeq ($(TARGET_SDCARD_BOOT), true)
+  ifneq ($(filter 5.4 5.10 5.15, $(TARGET_KERNEL_USE)),)
+    PRODUCT_COPY_FILES += \
+        device/linaro/dragonboard/shared/utils/sdcard-boot/fstab.sdhci:$(TARGET_COPY_OUT_RAMDISK)/first_stage_ramdisk/fstab.$(TARGET_HARDWARE) \
+        device/linaro/dragonboard/shared/utils/sdcard-boot/fstab.sdhci:$(TARGET_COPY_OUT_VENDOR)/etc/fstab.$(TARGET_HARDWARE)
+  else
+    PRODUCT_COPY_FILES += \
+        device/linaro/dragonboard/shared/utils/sdcard-boot/fstab.mmc:$(TARGET_COPY_OUT_RAMDISK)/first_stage_ramdisk/fstab.$(TARGET_HARDWARE) \
+        device/linaro/dragonboard/shared/utils/sdcard-boot/fstab.mmc:$(TARGET_COPY_OUT_VENDOR)/etc/fstab.$(TARGET_HARDWARE)
+  endif
+else
+  PRODUCT_COPY_FILES += \
+      device/linaro/dragonboard/fstab.common:$(TARGET_COPY_OUT_RAMDISK)/first_stage_ramdisk/fstab.$(TARGET_HARDWARE) \
+      device/linaro/dragonboard/fstab.common:$(TARGET_COPY_OUT_VENDOR)/etc/fstab.$(TARGET_HARDWARE)
+endif
+
 PRODUCT_COPY_FILES += \
     $(TARGET_KERNEL_DIR)/Image.gz:kernel \
-    device/linaro/dragonboard/fstab.common:$(TARGET_COPY_OUT_RAMDISK)/first_stage_ramdisk/fstab.$(TARGET_HARDWARE) \
-    device/linaro/dragonboard/fstab.common:$(TARGET_COPY_OUT_VENDOR)/etc/fstab.$(TARGET_HARDWARE) \
     device/linaro/dragonboard/init.common.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(TARGET_HARDWARE).rc \
     device/linaro/dragonboard/init.common.usb.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(TARGET_HARDWARE).usb.rc \
     frameworks/base/data/keyboards/Generic.kl:$(TARGET_COPY_OUT_VENDOR)/usr/keylayout/$(TARGET_HARDWARE).kl
diff --git a/shared/utils/dlkm_loader/device.mk b/shared/utils/dlkm_loader/device.mk
index 57b951f..d4df84c 100644
--- a/shared/utils/dlkm_loader/device.mk
+++ b/shared/utils/dlkm_loader/device.mk
@@ -2,5 +2,10 @@
 PRODUCT_PACKAGES += dlkm_loader
 
 # List of modules that should not load automatically
+ifeq ($(TARGET_SDCARD_BOOT), true)
+PRODUCT_COPY_FILES += \
+    device/linaro/dragonboard/shared/utils/dlkm_loader/vendor_ramdisk.modules.blocklist:$(TARGET_COPY_OUT_RAMDISK)/lib/modules/modules.blocklist
+else
 PRODUCT_COPY_FILES += \
     device/linaro/dragonboard/shared/utils/dlkm_loader/vendor_ramdisk.modules.blocklist:$(TARGET_COPY_OUT_VENDOR_RAMDISK)/lib/modules/modules.blocklist
+endif
diff --git a/shared/utils/init.utils.rc b/shared/utils/init.utils.rc
index 38d8d00..a17edfd 100644
--- a/shared/utils/init.utils.rc
+++ b/shared/utils/init.utils.rc
@@ -26,7 +26,7 @@
     disabled
     oneshot
 
-service rmtfs /vendor/bin/rmtfs -o /dev/block/platform/soc@0/1d84000.ufshc/by-name -P -r -s
+service rmtfs /vendor/bin/rmtfs -o /dev/block/by-name -P -r -s
     class core
     user root
     group system
diff --git a/shared/utils/sdcard-boot/fstab.mmc b/shared/utils/sdcard-boot/fstab.mmc
new file mode 100644
index 0000000..387a0cd
--- /dev/null
+++ b/shared/utils/sdcard-boot/fstab.mmc
@@ -0,0 +1,11 @@
+system		/system		erofs	ro				wait,logical,first_stage_mount,slotselect
+/dev/block/platform/soc@0/8804000.mmc/by-name/userdata	/data		ext4	discard,noatime,noauto_da_alloc,data=ordered,user_xattr,barrier=1,inlinecrypt	latemount,wait,formattable,fileencryption=aes-256-xts:aes-256-cts:v2+inlinecrypt_optimized,keydirectory=/metadata/vold/metadata_encryption,quota
+/dev/block/platform/soc@0/8804000.mmc/by-name/metadata	/metadata	ext4	noatime,nosuid,nodev,discard					wait,formattable,first_stage_mount,check
+/dev/block/platform/soc@0/8804000.mmc/by-name/misc /misc emmc defaults defaults
+/devices/platform/soc@0/a8f8800.usb/*/usb*		auto	auto	defaults	voldmanaged=usb1:auto
+/devices/platform/soc@0/1c00000.pci/*/usb*		auto	auto	defaults	voldmanaged=usb2:auto
+vendor		/vendor		erofs	ro				wait,logical,first_stage_mount,slotselect
+system_ext	/system_ext	erofs	ro				wait,logical,first_stage_mount,slotselect
+product		/product	erofs	ro				wait,logical,first_stage_mount,slotselect
+system_dlkm	/system_dlkm	erofs	ro				wait,logical,first_stage_mount,slotselect
+vendor_dlkm	/vendor_dlkm	erofs	ro				wait,logical,first_stage_mount,slotselect
diff --git a/shared/utils/sdcard-boot/fstab.sdhci b/shared/utils/sdcard-boot/fstab.sdhci
new file mode 100644
index 0000000..c385ba6
--- /dev/null
+++ b/shared/utils/sdcard-boot/fstab.sdhci
@@ -0,0 +1,11 @@
+system		/system		erofs	ro				wait,logical,first_stage_mount,slotselect
+/dev/block/platform/soc@0/8804000.sdhci/by-name/userdata	/data		ext4	discard,noatime,noauto_da_alloc,data=ordered,user_xattr,barrier=1,inlinecrypt	latemount,wait,formattable,fileencryption=aes-256-xts:aes-256-cts:v2+inlinecrypt_optimized,keydirectory=/metadata/vold/metadata_encryption,quota
+/dev/block/platform/soc@0/8804000.sdhci/by-name/metadata	/metadata	ext4	noatime,nosuid,nodev,discard					wait,formattable,first_stage_mount,check
+/dev/block/platform/soc@0/8804000.sdhci/by-name/misc /misc emmc defaults defaults
+/devices/platform/soc@0/a8f8800.usb/*/usb*		auto	auto	defaults	voldmanaged=usb1:auto
+/devices/platform/soc@0/1c00000.pci/*/usb*		auto	auto	defaults	voldmanaged=usb2:auto
+vendor		/vendor		erofs	ro				wait,logical,first_stage_mount,slotselect
+system_ext	/system_ext	erofs	ro				wait,logical,first_stage_mount,slotselect
+product		/product	erofs	ro				wait,logical,first_stage_mount,slotselect
+system_dlkm	/system_dlkm	erofs	ro				wait,logical,first_stage_mount,slotselect
+vendor_dlkm	/vendor_dlkm	erofs	ro				wait,logical,first_stage_mount,slotselect
diff --git a/shared/utils/sdcard-boot/sepolicy/file_contexts b/shared/utils/sdcard-boot/sepolicy/file_contexts
new file mode 100644
index 0000000..79d5de8
--- /dev/null
+++ b/shared/utils/sdcard-boot/sepolicy/file_contexts
@@ -0,0 +1,15 @@
+/dev/block/platform/soc@0/8804000\.mmc/by-name/fsc		u:object_r:modem_block_device:s0
+/dev/block/platform/soc@0/8804000\.mmc/by-name/fsg		u:object_r:modem_block_device:s0
+/dev/block/platform/soc@0/8804000\.mmc/by-name/modemst[12]	u:object_r:modem_block_device:s0
+/dev/block/platform/soc@0/8804000\.mmc/by-name/metadata		u:object_r:metadata_block_device:s0
+/dev/block/platform/soc@0/8804000\.mmc/by-name/super		u:object_r:super_block_device:s0
+/dev/block/platform/soc@0/8804000\.mmc/by-name/userdata		u:object_r:userdata_block_device:s0
+/dev/block/platform/soc@0/8804000\.mmc/by-name/misc		u:object_r:misc_block_device:s0
+
+/dev/block/platform/soc@0/8804000\.sdhci/by-name/fsc		u:object_r:modem_block_device:s0
+/dev/block/platform/soc@0/8804000\.sdhci/by-name/fsg		u:object_r:modem_block_device:s0
+/dev/block/platform/soc@0/8804000\.sdhci/by-name/modemst[12]	u:object_r:modem_block_device:s0
+/dev/block/platform/soc@0/8804000\.sdhci/by-name/metadata		u:object_r:metadata_block_device:s0
+/dev/block/platform/soc@0/8804000\.sdhci/by-name/super		u:object_r:super_block_device:s0
+/dev/block/platform/soc@0/8804000\.sdhci/by-name/userdata		u:object_r:userdata_block_device:s0
+/dev/block/platform/soc@0/8804000\.sdhci/by-name/misc		u:object_r:misc_block_device:s0