Initial commit: Complete LVM migration toolset with fixes

- Fixed partition size calculation bugs in migrate_to_lvm.sh
- Added comprehensive error handling for USB drive stability
- Optimized data copy operations using cp -a for better performance
- Corrected mount point detection for encrypted home partitions
- Enhanced drive detection and exclusion logic
- Added proper size override mechanisms for manual intervention
- Improved filesystem creation and validation processes
- Complete toolset for external M.2 drive migration scenarios

Tested successfully on:
- Debian 13 Trixie Live USB environment
- 476GB external M.2 drives via USB 3.0
- Complex partition layouts (root/home/EFI + encryption)
- Large data transfers (314GB+ encrypted home directories)

lvm-migration-tools/create_auto_startup.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Create automatic startup script for Clonezilla Live
+
+cat > /tmp/auto-backup-startup.sh << 'EOF'
+#!/bin/bash
+# Automatic startup script for Clonezilla Live
+# This runs when auto_backup=true is passed as kernel parameter
+
+if grep -q "auto_backup=true" /proc/cmdline; then
+    echo "Automatic backup mode detected"
+    sleep 3
+    
+    # Mount the backup partition
+    mkdir -p /tmp/backup_mount
+    mount /dev/sda2 /tmp/backup_mount 2>/dev/null
+    
+    if [ -f /tmp/backup_mount/automated_clonezilla_backup.sh ]; then
+        echo "Running automated backup script..."
+        /tmp/backup_mount/automated_clonezilla_backup.sh
+    else
+        echo "Automated backup script not found, starting manual Clonezilla"
+        ocs-live-general
+    fi
+fi
+EOF
+
+chmod +x /tmp/auto-backup-startup.sh
+echo "Auto-startup script created"