Complete rewrite: Single working LVM block-level backup script

- Removed 40+ broken/messy scripts, moved to old_scripts/
- Created lvm_block_backup.sh - proper block-level LVM snapshot backup
- Uses dd for block-level cloning instead of file-level rsync
- Successfully tested: 462GB backup in 33 minutes
- Creates exact, bootable clone of internal drive to external drive
- Proper LVM snapshot management with cleanup
- Clear documentation in README_BACKUP.md
- Clean, minimal solution that actually works

old_scripts/check_packages.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+
+# Package Availability Checker for Live Systems
+# Checks what packages are available before attempting installation
+
+set -e
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+log() { echo -e "${BLUE}[INFO]${NC} $1"; }
+success() { echo -e "${GREEN}[FOUND]${NC} $1"; }
+warning() { echo -e "${YELLOW}[MISSING]${NC} $1"; }
+
+echo -e "${GREEN}=== Package Availability Checker ===${NC}"
+echo "Checking package availability for LVM migration..."
+echo
+
+# Detect distribution
+if [ -f /etc/os-release ]; then
+    . /etc/os-release
+    echo "Distribution: $PRETTY_NAME"
+    echo "ID: $ID"
+    echo "Version: $VERSION_ID"
+    echo
+fi
+
+# Function to check if a package exists in repositories
+check_package() {
+    local pkg="$1"
+    if apt-cache show "$pkg" >/dev/null 2>&1; then
+        success "$pkg"
+        return 0
+    else
+        warning "$pkg"
+        return 1
+    fi
+}
+
+# Function to check multiple package alternatives
+check_alternatives() {
+    local desc="$1"
+    shift
+    local packages=("$@")
+    
+    echo -e "${BLUE}$desc:${NC}"
+    local found=0
+    for pkg in "${packages[@]}"; do
+        if check_package "$pkg"; then
+            ((found++))
+        fi
+    done
+    
+    if [ $found -eq 0 ]; then
+        echo -e "  ${RED}⚠ No packages found for $desc${NC}"
+    fi
+    echo
+}
+
+echo "Updating package cache..."
+apt update >/dev/null 2>&1 || warning "Could not update package cache"
+echo
+
+# Check critical packages
+total_missing=0
+
+check_alternatives "LVM Tools" "lvm2" "lvm"
+check_alternatives "Device Mapper" "dmsetup" "device-mapper"
+check_alternatives "Cryptsetup" "cryptsetup" "cryptsetup-bin"
+check_alternatives "Filesystem Tools" "e2fsprogs" "dosfstools" "parted"
+check_alternatives "Backup Tools" "rsync" "pv"
+check_alternatives "GRUB EFI" "grub-efi-amd64" "grub-efi" "grub-efi-amd64-bin"
+check_alternatives "GRUB PC" "grub-pc-bin" "grub-pc"
+check_alternatives "GRUB Common" "grub-common" "grub2-common"
+check_alternatives "Initramfs" "initramfs-tools" "dracut"
+check_alternatives "System Tools" "util-linux" "coreutils" "bc"
+
+echo -e "${BLUE}=== Summary ===${NC}"
+echo -e "${GREEN}✓ Package availability checked${NC}"
+echo "Most packages should be available for installation."
+
+echo
+echo "To install packages, run:"
+echo "  sudo ./emergency_install.sh"
+echo
+echo "To check individual commands after installation:"
+echo "  command -v lvm && echo 'LVM available'"
+echo "  command -v cryptsetup && echo 'Cryptsetup available'"
+echo "  command -v grub-install && echo 'GRUB available'"