diff --git a/zosv4installuefipxeondisk.sh b/zosv4installuefipxeondisk.sh
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+++ b/zosv4installuefipxeondisk.sh
@@ -0,0 +1,308 @@
+#!/bin/bash
+
+# Enable strict error handling
+set -e
+
+# Function to log messages with timestamps
+log() {
+  echo "$(date '+%F %T') - $@"
+}
+
+# Function to display usage information
+usage() {
+  echo "Usage: $0 [-d DEVICE] [-f FARM] [-e ENVIRONMENT]"
+  echo "  -d, --device DEVICE      Specify the block device to use (e.g., sda, nvme0n1)."
+  echo "  -f, --farm FARM          Specify the FARM ID."
+  echo "  -e, --environment ENV    Specify the environment (dev, qa, test, prod)."
+  echo "  -h, --help               Display this help message."
+  exit 1
+}
+
+# Function to find a suitable block device
+find_blockdev() {
+  # Minimum size in bytes, e.g., 10 GiB
+  MIN_SIZE=$((10 * 1024 * 1024 * 1024))
+
+  # Search for NVMe devices first
+  log "Searching for NVMe devices..."
+  for DEV in /dev/nvme*n1; do
+    if [ -b "$DEV" ]; then
+      SIZE_BYTES=$(blockdev --getsize64 "$DEV")
+      if [ "$SIZE_BYTES" -ge "$MIN_SIZE" ]; then
+        log "Found NVMe device: $DEV ($(numfmt --to=iec $SIZE_BYTES))"
+        BLOCKDEV="${DEV##*/}"
+        return 0
+      else
+        log "$DEV is smaller than $(numfmt --to=iec $MIN_SIZE). Skipping."
+      fi
+    fi
+  done
+
+  # If no NVMe device found, search for SSD devices
+  log "No suitable NVMe device found. Searching for SSD devices..."
+  for DEV_PATH in /sys/block/*; do
+    DEV_NAME=$(basename "$DEV_PATH")
+    # Exclude unwanted devices
+    case "$DEV_NAME" in
+    loop* | ram* | sr* | fd* | md* | dm-*)
+      continue
+      ;;
+    esac
+    DEVICE="/dev/$DEV_NAME"
+    if [ -b "$DEVICE" ] && [ -e "/sys/block/$DEV_NAME/queue/rotational" ] && [ "$(cat /sys/block/$DEV_NAME/queue/rotational)" == "0" ]; then
+      SIZE_BYTES=$(blockdev --getsize64 "$DEVICE")
+      if [ "$SIZE_BYTES" -ge "$MIN_SIZE" ]; then
+        log "Found SSD device: $DEVICE ($(numfmt --to=iec $SIZE_BYTES))"
+        BLOCKDEV="$DEV_NAME"
+        return 0
+      else
+        log "$DEVICE is smaller than $(numfmt --to=iec $MIN_SIZE). Skipping."
+      fi
+    fi
+  done
+
+  log "No suitable block device found."
+  return 1
+}
+
+# Function to manage UEFI boot entries
+manage_boot_entries() {
+  log "Managing UEFI boot entries..."
+
+  # Check if efibootmgr is available
+  if ! command -v efibootmgr &>/dev/null; then
+    log "Error: 'efibootmgr' is not installed. Please install it and rerun the script."
+    exit 1
+  fi
+
+  # Get the list of current boot entries
+  log "Retrieving current boot entries..."
+  BOOT_ENTRIES_INFO=$(efibootmgr -v | grep -E "^Boot[0-9A-F]{4}")
+
+  # Arrays to hold boot entry numbers
+  NETBOOT_ENTRIES=()
+  ENTRIES_TO_DELETE=()
+
+  # Identify netboot entries and entries to delete
+  while read -r LINE; do
+    ENTRY_NUM=$(echo "$LINE" | awk '{print $1}' | sed 's/Boot//;s/\*//')
+    ENTRY_DESC=$(echo "$LINE" | cut -d' ' -f2-)
+    ENTRY_PATH=$(echo "$LINE" | awk -F'File' '{print $2}')
+
+    # Check if the entry is a netboot entry (e.g., contains "PXE", "Network", or "IPv4"/"IPv6")
+    if echo "$ENTRY_DESC" | grep -qiE "(PXE|Network|IPV4|IPV6)"; then
+      NETBOOT_ENTRIES+=("$ENTRY_NUM")
+      log "Identified netboot entry: Boot$ENTRY_NUM - $ENTRY_DESC"
+    else
+      ENTRIES_TO_DELETE+=("$ENTRY_NUM")
+      log "Marking entry for deletion: Boot$ENTRY_NUM - $ENTRY_DESC"
+    fi
+  done <<<"$BOOT_ENTRIES_INFO"
+
+  # Delete non-netboot entries
+  if [ ${#ENTRIES_TO_DELETE[@]} -gt 0 ]; then
+    log "Deleting non-netboot boot entries..."
+    for ENTRY_NUM in "${ENTRIES_TO_DELETE[@]}"; do
+      efibootmgr -b "$ENTRY_NUM" -B
+      log "Deleted boot entry Boot$ENTRY_NUM"
+    done
+  else
+    log "No non-netboot entries to delete."
+  fi
+
+  # Create a new boot entry pointing to BOOTX64.EFI on the first partition
+  log "Creating new boot entry for /dev/${PARTPREFIX}1..."
+  # Adjust the partition number if necessary
+  ESP_PART_NUM=1
+  efibootmgr -c -d /dev/${BLOCKDEV} -p $ESP_PART_NUM -L "Zero-OS" -l "\\EFI\\BOOT\\BOOTX64.EFI" || {
+    log "Error: Failed to create new boot entry."
+    exit 1
+  }
+
+  # Retrieve the new boot entry number
+  NEW_BOOT_NUM=$(efibootmgr | grep "Zero-OS" | awk '{print $1}' | sed 's/\*//;s/Boot//')
+  if [ -z "$NEW_BOOT_NUM" ]; then
+    log "Error: Failed to retrieve new boot entry number."
+    exit 1
+  fi
+
+  # Set the new boot order: netboot entries first, followed by the new boot entry
+  log "Setting new BootOrder with netboot entries first..."
+  BOOT_ORDER=""
+  for ENTRY_NUM in "${NETBOOT_ENTRIES[@]}"; do
+    BOOT_ORDER+="$ENTRY_NUM,"
+  done
+  BOOT_ORDER+="$NEW_BOOT_NUM"
+
+  efibootmgr -o "$BOOT_ORDER" || {
+    log "Error: Failed to set new BootOrder."
+    exit 1
+  }
+
+  log "New BootOrder set successfully: $BOOT_ORDER"
+}
+
+# Main script execution
+main() {
+  # Default values
+  BLOCKDEV_SPECIFIED=""
+  FARM="1234"
+  ENVIRONMENT="prod"
+
+  # Parse command-line arguments
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+    -d | --device)
+      shift
+      if [ -z "$1" ]; then
+        log "Error: '--device' requires a non-empty option argument."
+        usage
+      fi
+      BLOCKDEV_SPECIFIED="$1"
+      shift
+      ;;
+    -f | --farm)
+      shift
+      if [ -z "$1" ]; then
+        log "Error: '--farm' requires a non-empty option argument."
+        usage
+      fi
+      FARM="$1"
+      shift
+      ;;
+    -e | --environment)
+      shift
+      if [ -z "$1" ]; then
+        log "Error: '--environment' requires a non-empty option argument."
+        usage
+      fi
+      ENVIRONMENT="$1"
+      shift
+      ;;
+    -h | --help)
+      usage
+      ;;
+    *)
+      log "Error: Unknown option: $1"
+      usage
+      ;;
+    esac
+  done
+
+  # Validate environment
+  case "$ENVIRONMENT" in
+  dev | qa | test | prod)
+    log "Using environment: $ENVIRONMENT"
+    ;;
+  *)
+    log "Error: Invalid environment '$ENVIRONMENT'. Valid options are 'dev', 'qa', 'test', 'prod'."
+    exit 1
+    ;;
+  esac
+
+  if [ -n "$BLOCKDEV_SPECIFIED" ]; then
+    # Use the specified block device
+    if [[ "$BLOCKDEV_SPECIFIED" != /dev/* ]]; then
+      BLOCKDEV_SPECIFIED="/dev/$BLOCKDEV_SPECIFIED"
+    fi
+    if [ ! -b "$BLOCKDEV_SPECIFIED" ]; then
+      log "Error: Specified device $BLOCKDEV_SPECIFIED does not exist or is not a block device."
+      exit 1
+    fi
+    BLOCKDEV="${BLOCKDEV_SPECIFIED##*/}"
+    log "Using specified block device: $BLOCKDEV_SPECIFIED"
+  else
+    # Find a suitable block device
+    if ! find_blockdev; then
+      log "Error: No suitable block device found."
+      exit 1
+    fi
+    log "Selected block device: /dev/${BLOCKDEV}"
+  fi
+
+  # Confirm with the user before proceeding
+  read -p "This will erase all data on /dev/${BLOCKDEV}. Are you sure you want to proceed? (yes/[no]): " CONFIRM
+  if [ "$CONFIRM" != "yes" ]; then
+    log "Operation cancelled by user."
+    exit 0
+  fi
+
+  # Determine partition naming convention
+  if [[ $BLOCKDEV =~ [0-9]$ ]]; then
+    PARTPREFIX="${BLOCKDEV}p"
+  else
+    PARTPREFIX="${BLOCKDEV}"
+  fi
+
+  # Wipe filesystem signatures
+  log "Wiping filesystem signatures on /dev/${BLOCKDEV}..."
+  wipefs -a -f /dev/${BLOCKDEV} || {
+    log "Failed to wipe filesystem signatures."
+    exit 1
+  }
+
+  # Create GPT partition table
+  log "Creating GPT partition table on /dev/${BLOCKDEV}..."
+  parted -s /dev/${BLOCKDEV} mklabel gpt || {
+    log "Failed to create GPT partition table."
+    exit 1
+  }
+
+  # Create partitions
+  log "Creating partitions on /dev/${BLOCKDEV}..."
+  if ! parted -s /dev/${BLOCKDEV} "mkpart zosboot fat16 1MiB 100MiB set 1 esp on mkpart zoscache btrfs 100MiB 100%"; then
+    log "Failed to create partitions."
+    exit 1
+  fi
+
+  # Format partitions
+  log "Formatting /dev/${PARTPREFIX}1 as FAT32..."
+  if ! mkfs.vfat -F32 -nZOSPXE /dev/${PARTPREFIX}1; then
+    log "Failed to format /dev/${PARTPREFIX}1 as FAT32."
+    exit 1
+  fi
+
+  log "Formatting /dev/${PARTPREFIX}2 as BTRFS..."
+  if ! mkfs.btrfs -f /dev/${PARTPREFIX}2 -LZOSCACHE; then
+    log "Failed to format /dev/${PARTPREFIX}2 as BTRFS."
+    exit 1
+  fi
+
+  # Mount and prepare directories
+  MOUNT_POINT="zospxe"
+  log "Creating and mounting directory ./${MOUNT_POINT}..."
+  mkdir -p "${MOUNT_POINT}"
+  if ! mount /dev/${PARTPREFIX}1 -t vfat "${MOUNT_POINT}"; then
+    log "Failed to mount /dev/${PARTPREFIX}1 to ${MOUNT_POINT}."
+    exit 1
+  fi
+
+  log "Creating directory structure in ${MOUNT_POINT}..."
+  mkdir -p "${MOUNT_POINT}/efi/boot"
+
+  # Download the required BOOTX64.EFI file
+  # EFI_FILE_URL="https://bootstrap.grid.tf/uefi/${ENVIRONMENT}/${FARM}"
+  EFI_FILE_URL="https://v4.bootstrap.grid.tf/uefi/${ENVIRONMENT}/${FARM}/debug/zero-os-development-zos-v4-rollback-zosbase-debug-9dddfa0299.efi"
+  log "Downloading BOOTX64.EFI from ${EFI_FILE_URL}..."
+  if ! wget -q "${EFI_FILE_URL}" -O "${MOUNT_POINT}/efi/boot/BOOTX64.EFI"; then
+    log "Failed to download BOOTX64.EFI."
+    exit 1
+  fi
+
+  log "Download successful."
+
+  # Unmount the partition
+  log "Unmounting ${MOUNT_POINT}..."
+  umount -r "${MOUNT_POINT}" || {
+    log "Failed to unmount ${MOUNT_POINT}."
+    exit 1
+  }
+
+  # Manage UEFI boot entries
+  manage_boot_entries
+
+  log "Operation completed successfully."
+}
+
+# Execute the main function
+main "$@"
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