diff --git a/old_unused/chroot.sh b/old_unused/chroot.sh
index 416e511..bb88a19 100644
--- a/old_unused/chroot.sh
+++ b/old_unused/chroot.sh
@@ -546,14 +546,10 @@ function create_swapfile {
           fi
           echo -e -n "\nA swapfile of ${BLUE_LIGHT}${swap_size}GB${NORMAL} will be created in ${BLUE_LIGHT}/var/swap/${NORMAL} btrfs subvolume...\n\n"
           btrfs subvolume create /var/swap
-          truncate -s 0 /var/swap/swapfile
-          chattr +C /var/swap/swapfile
-          chmod 600 /var/swap/swapfile
-          dd if=/dev/zero of=/var/swap/swapfile bs=100M count="$((${swap_size} * 10))" status=progress
+          btrfs filesystem mkswapfile /var/swap/swapfile --size "${swap_size}"G
           mkswap --label SwapFile /var/swap/swapfile
           swapon /var/swap/swapfile
-          gcc -O2 "$HOME"/btrfs_map_physical.c -o "$HOME"/btrfs_map_physical
-          RESUME_OFFSET=$(($("$HOME"/btrfs_map_physical /var/swap/swapfile | awk -F " " 'FNR == 2 {print $NF}') / $(getconf PAGESIZE)))
+          RESUME_OFFSET=$(btrfs inspect-internal map-swapfile -r /var/swap/swapfile)
           if [[ $bootloader =~ $regex_EFISTUB ]]; then
             sed -i "/OPTIONS=/s/\"$/ resume=UUID=$ROOT_UUID resume_offset=$RESUME_OFFSET&/" /etc/default/efibootmgr-kernel-hook
           elif [[ $bootloader =~ $regex_GRUB2 ]]; then
diff --git a/vli.sh b/vli.sh
index 39a1901..4fbefb3 100755
--- a/vli.sh
+++ b/vli.sh
@@ -86,10 +86,6 @@ function kill_script {
     rm -f "$HOME"/chroot.sh
   fi
 
-  if [[ -f "$HOME"/btrfs_map_physical.c ]]; then
-    rm -f "$HOME"/btrfs_map_physical.c
-  fi
-
   echo -e -n "\n${GREEN_LIGHT}Everything's done, quitting.${NORMAL}\n\n"
   exit 1
 
@@ -679,14 +675,10 @@ function create_swapfile {
           fi
           echo -e -n "\nA swapfile of ${BLUE_LIGHT}${swap_size}GB${NORMAL} will be created in ${BLUE_LIGHT}/var/swap/${NORMAL} btrfs subvolume...\n\n"
           btrfs subvolume create /var/swap
-          truncate -s 0 /var/swap/swapfile
-          chattr +C /var/swap/swapfile
-          chmod 600 /var/swap/swapfile
-          dd if=/dev/zero of=/var/swap/swapfile bs=100M count="$((${swap_size} * 10))" status=progress
+          btrfs filesystem mkswapfile /var/swap/swapfile --size "${swap_size}"G
           mkswap --label SwapFile /var/swap/swapfile
           swapon /var/swap/swapfile
-          gcc -O2 "$HOME"/btrfs_map_physical.c -o "$HOME"/btrfs_map_physical
-          RESUME_OFFSET=$(($("$HOME"/btrfs_map_physical /var/swap/swapfile | awk -F " " 'FNR == 2 {print $NF}') / $(getconf PAGESIZE)))
+          RESUME_OFFSET=$(btrfs inspect-internal map-swapfile -r /var/swap/swapfile)
           if [[ $bootloader =~ $regex_EFISTUB ]]; then
             sed -i "/OPTIONS=/s/\"$/ resume=UUID=$ROOT_UUID resume_offset=$RESUME_OFFSET&/" /etc/default/efibootmgr-kernel-hook
           elif [[ $bootloader =~ $regex_GRUB2 ]]; then
@@ -1415,571 +1407,6 @@ EndOfChrootScript
 
 }
 
-function create_btrfs_map_physical_c {
-
-  if [[ -f "$HOME"/btrfs_map_physical.c ]]; then
-    rm -f "$HOME"/btrfs_map_physical.c
-  fi
-
-  cat >>"$HOME"/btrfs_map_physical.c <<'EndOfProgram'
-// SPDX-FileCopyrightText: Omar Sandoval <osandov@osandov.com>
-// SPDX-License-Identifier: MIT
-
-#include <fcntl.h>
-#include <getopt.h>
-#include <inttypes.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <linux/btrfs.h>
-#include <linux/btrfs_tree.h>
-#include <asm/byteorder.h>
-
-#define le16_to_cpu __le16_to_cpu
-#define le32_to_cpu __le32_to_cpu
-#define le64_to_cpu __le64_to_cpu
-
-static const char *progname = "btrfs_map_physical";
-
-static void usage(bool error)
-{
-	fprintf(error ? stderr : stdout,
-		"usage: %s [OPTION]... PATH\n"
-		"\n"
-		"Map the logical and physical extents of a file on Btrfs\n\n"
-		"Pipe this to `column -ts $'\\t'` for prettier output.\n"
-		"\n"
-		"Btrfs represents a range of data in a file with a \"file extent\". Each\n"
-		"file extent refers to a subset of an \"extent\". Each extent has a\n"
-		"location in the logical address space of the filesystem belonging to a\n"
-		"\"chunk\". Each chunk maps has a profile (i.e., RAID level) and maps to\n"
-		"one or more physical locations, or \"stripes\", on disk. The extent may be\n"
-		"\"encoded\" on disk (currently this means compressed, but in the future it\n"
-		"may also be encrypted).\n"
-		"\n"
-		"An explanation of each printed field and its corresponding on-disk data\n"
-		"structure is provided below:\n"
-		"\n"
-		"FILE OFFSET        Offset in the file where the file extent starts\n"
-		"                   [(struct btrfs_key).offset]\n"
-		"FILE SIZE          Size of the file extent\n"
-		"                   [(struct btrfs_file_extent_item).num_bytes for most\n"
-		"                   extents, (struct btrfs_file_extent_item).ram_bytes\n"
-		"                   for inline extents]\n"
-		"EXTENT OFFSET      Offset from the beginning of the unencoded extent\n"
-		"                   where the file extent starts\n"
-		"                   [(struct btrfs_file_extent_item).offset]\n"
-		"EXTENT TYPE        Type of the extent (inline, preallocated, etc.)\n"
-		"                   [(struct btrfs_file_extent_item).type];\n"
-		"                   how it is encoded\n"
-		"                   [(struct btrfs_file_extent_item){compression,\n"
-		"                   encryption,other_encoding}];\n"
-		"                   and its data profile\n"
-		"                   [(struct btrfs_chunk).type]\n"
-		"LOGICAL SIZE       Size of the unencoded extent\n"
-		"                   [(struct btrfs_file_extent_item).ram_bytes]\n"
-		"LOGICAL OFFSET     Location of the extent in the filesystem's logical\n"
-		"                   address space\n"
-		"                   [(struct btrfs_file_extent_offset).disk_bytenr]\n"
-		"PHYSICAL SIZE      Size of the encoded extent on disk\n"
-		"                   [(struct btrfs_file_extent_offset).disk_num_bytes]\n"
-		"DEVID              ID of the device containing the extent\n"
-		"                   [(struct btrfs_stripe).devid]\n"
-		"PHYSICAL OFFSET    Location of the extent on the device\n"
-		"                   [calculated from (struct btrfs_stripe).offset]\n"
-		"\n"
-		"FILE SIZE is rounded up to the sector size of the filesystem.\n"
-		"\n"
-		"Inline extents are stored with the metadata of the filesystem; this tool\n"
-		"does not have the ability to determine their location.\n"
-		"\n"
-		"Gaps in a file are represented with a hole file extent unless the\n"
-		"filesystem was formatted with the \"no-holes\" option.\n"
-		"\n"
-		"If the file extent was truncated, hole punched, cloned, or deduped,\n"
-		"EXTENT OFFSET may be non-zero and LOGICAL SIZE may be different from\n"
-		"FILE SIZE.\n"
-		"\n"
-		"Options:\n"
-		"  -h, --help   display this help message and exit\n",
-		progname);
-	exit(error ? EXIT_FAILURE : EXIT_SUCCESS);
-}
-
-struct stripe {
-	uint64_t devid;
-	uint64_t offset;
-};
-
-struct chunk {
-	uint64_t offset;
-	uint64_t length;
-	uint64_t stripe_len;
-	uint64_t type;
-	struct stripe *stripes;
-	size_t num_stripes;
-	size_t sub_stripes;
-};
-
-struct chunk_tree {
-	struct chunk *chunks;
-	size_t num_chunks;
-};
-
-static int read_chunk_tree(int fd, struct chunk **chunks, size_t *num_chunks)
-{
-	struct btrfs_ioctl_search_args search = {
-		.key = {
-			.tree_id = BTRFS_CHUNK_TREE_OBJECTID,
-			.min_objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID,
-			.min_type = BTRFS_CHUNK_ITEM_KEY,
-			.min_offset = 0,
-			.max_objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID,
-			.max_type = BTRFS_CHUNK_ITEM_KEY,
-			.max_offset = UINT64_MAX,
-			.min_transid = 0,
-			.max_transid = UINT64_MAX,
-			.nr_items = 0,
-		},
-	};
-	size_t items_pos = 0, buf_off = 0;
-	size_t capacity = 0;
-	int ret;
-
-	*chunks = NULL;
-	*num_chunks = 0;
-	for (;;) {
-		const struct btrfs_ioctl_search_header *header;
-		const struct btrfs_chunk *item;
-		struct chunk *chunk;
-		size_t i;
-
-		if (items_pos >= search.key.nr_items) {
-			search.key.nr_items = 4096;
-			ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &search);
-			if (ret == -1) {
-				perror("BTRFS_IOC_TREE_SEARCH");
-				return -1;
-			}
-			items_pos = 0;
-			buf_off = 0;
-
-			if (search.key.nr_items == 0)
-				break;
-		}
-
-		header = (struct btrfs_ioctl_search_header *)(search.buf + buf_off);
-		if (header->type != BTRFS_CHUNK_ITEM_KEY)
-			goto next;
-
-		item = (void *)(header + 1);
-		if (*num_chunks >= capacity) {
-			struct chunk *tmp;
-
-			if (capacity == 0)
-				capacity = 1;
-			else
-				capacity *= 2;
-			tmp = realloc(*chunks, capacity * sizeof(**chunks));
-			if (!tmp) {
-				perror("realloc");
-				return -1;
-			}
-			*chunks = tmp;
-		}
-
-		chunk = &(*chunks)[*num_chunks];
-		chunk->offset = header->offset;
-		chunk->length = le64_to_cpu(item->length);
-		chunk->stripe_len = le64_to_cpu(item->stripe_len);
-		chunk->type = le64_to_cpu(item->type);
-		chunk->num_stripes = le16_to_cpu(item->num_stripes);
-		chunk->sub_stripes = le16_to_cpu(item->sub_stripes);
-		chunk->stripes = calloc(chunk->num_stripes,
-					sizeof(*chunk->stripes));
-		if (!chunk->stripes) {
-			perror("calloc");
-			return -1;
-		}
-		(*num_chunks)++;
-
-		for (i = 0; i < chunk->num_stripes; i++) {
-			const struct btrfs_stripe *stripe;
-
-			stripe = &item->stripe + i;
-			chunk->stripes[i].devid = le64_to_cpu(stripe->devid);
-			chunk->stripes[i].offset = le64_to_cpu(stripe->offset);
-		}
-
-next:
-		items_pos++;
-		buf_off += sizeof(*header) + header->len;
-		if (header->offset == UINT64_MAX)
-			break;
-		else
-			search.key.min_offset = header->offset + 1;
-	}
-	return 0;
-}
-
-static struct chunk *find_chunk(struct chunk *chunks, size_t num_chunks,
-				uint64_t logical)
-{
-	size_t lo, hi;
-
-	if (!num_chunks)
-		return NULL;
-
-	lo = 0;
-	hi = num_chunks - 1;
-	while (lo <= hi) {
-		size_t mid = lo + (hi - lo) / 2;
-
-		if (logical < chunks[mid].offset)
-			hi = mid - 1;
-		else if (logical >= chunks[mid].offset + chunks[mid].length)
-			lo = mid + 1;
-		else
-			return &chunks[mid];
-	}
-	return NULL;
-}
-
-static int print_extents(int fd, struct chunk *chunks, size_t num_chunks)
-{
-	struct btrfs_ioctl_search_args search = {
-		.key = {
-			.min_type = BTRFS_EXTENT_DATA_KEY,
-			.max_type = BTRFS_EXTENT_DATA_KEY,
-			.min_offset = 0,
-			.max_offset = UINT64_MAX,
-			.min_transid = 0,
-			.max_transid = UINT64_MAX,
-			.nr_items = 0,
-		},
-	};
-	struct btrfs_ioctl_ino_lookup_args args = {
-		.treeid = 0,
-		.objectid = BTRFS_FIRST_FREE_OBJECTID,
-	};
-	size_t items_pos = 0, buf_off = 0;
-	struct stat st;
-	int ret;
-
-	puts("FILE OFFSET\tFILE SIZE\tEXTENT OFFSET\tEXTENT TYPE\tLOGICAL SIZE\tLOGICAL OFFSET\tPHYSICAL SIZE\tDEVID\tPHYSICAL OFFSET");
-
-	ret = fstat(fd, &st);
-	if (ret == -1) {
-		perror("fstat");
-		return -1;
-	}
-
-	ret = ioctl(fd, BTRFS_IOC_INO_LOOKUP, &args);
-	if (ret == -1) {
-		perror("BTRFS_IOC_INO_LOOKUP");
-		return -1;
-	}
-
-	search.key.tree_id = args.treeid;
-	search.key.min_objectid = search.key.max_objectid = st.st_ino;
-	for (;;) {
-		const struct btrfs_ioctl_search_header *header;
-		const struct btrfs_file_extent_item *item;
-		uint8_t type;
-		/* Initialize to silence GCC. */
-		uint64_t file_offset = 0;
-		uint64_t file_size = 0;
-		uint64_t extent_offset = 0;
-		uint64_t logical_size = 0;
-		uint64_t logical_offset = 0;
-		uint64_t physical_size = 0;
-		struct chunk *chunk = NULL;
-
-		if (items_pos >= search.key.nr_items) {
-			search.key.nr_items = 4096;
-			ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &search);
-			if (ret == -1) {
-				perror("BTRFS_IOC_TREE_SEARCH");
-				return -1;
-			}
-			items_pos = 0;
-			buf_off = 0;
-
-			if (search.key.nr_items == 0)
-				break;
-		}
-
-		header = (struct btrfs_ioctl_search_header *)(search.buf + buf_off);
-		if (header->type != BTRFS_EXTENT_DATA_KEY)
-			goto next;
-
-		item = (void *)(header + 1);
-
-		type = item->type;
-		file_offset = header->offset;
-		if (type == BTRFS_FILE_EXTENT_INLINE) {
-			file_size = logical_size = le64_to_cpu(item->ram_bytes);
-			extent_offset = 0;
-			physical_size = (header->len -
-					 offsetof(struct btrfs_file_extent_item,
-						  disk_bytenr));
-		} else if (type == BTRFS_FILE_EXTENT_REG ||
-			   type == BTRFS_FILE_EXTENT_PREALLOC) {
-			file_size = le64_to_cpu(item->num_bytes);
-			extent_offset = le64_to_cpu(item->offset);
-			logical_size = le64_to_cpu(item->ram_bytes);
-			logical_offset = le64_to_cpu(item->disk_bytenr);
-			physical_size = le64_to_cpu(item->disk_num_bytes);
-			if (logical_offset) {
-				chunk = find_chunk(chunks, num_chunks,
-						   logical_offset);
-				if (!chunk) {
-					printf("\n");
-					fprintf(stderr,
-						"could not find chunk containing %" PRIu64 "\n",
-						logical_offset);
-					return -1;
-				}
-			}
-		}
-
-		printf("%" PRIu64 "\t", file_offset);
-		if (type == BTRFS_FILE_EXTENT_INLINE ||
-		    type == BTRFS_FILE_EXTENT_REG ||
-		    type == BTRFS_FILE_EXTENT_PREALLOC) {
-			printf("%" PRIu64 "\t%" PRIu64 "\t", file_size,
-			       extent_offset);
-		} else {
-			printf("\t\t");
-		}
-
-		switch (type) {
-		case BTRFS_FILE_EXTENT_INLINE:
-			printf("inline");
-			break;
-		case BTRFS_FILE_EXTENT_REG:
-			if (logical_offset)
-				printf("regular");
-			else
-				printf("hole");
-			break;
-		case BTRFS_FILE_EXTENT_PREALLOC:
-			printf("prealloc");
-			break;
-		default:
-			printf("type%u", type);
-			break;
-		}
-		switch (item->compression) {
-		case 0:
-			break;
-		case 1:
-			printf(",compression=zlib");
-			break;
-		case 2:
-			printf(",compression=lzo");
-			break;
-		case 3:
-			printf(",compression=zstd");
-			break;
-		default:
-			printf(",compression=%u", item->compression);
-			break;
-		}
-		if (item->encryption)
-			printf(",encryption=%u", item->encryption);
-		if (item->other_encoding) {
-			printf(",other_encoding=%u",
-			       le16_to_cpu(item->other_encoding));
-		}
-		if (chunk) {
-			switch (chunk->type & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
-			case 0:
-				break;
-			case BTRFS_BLOCK_GROUP_RAID0:
-				printf(",raid0");
-				break;
-			case BTRFS_BLOCK_GROUP_RAID1:
-				printf(",raid1");
-				break;
-			case BTRFS_BLOCK_GROUP_DUP:
-				printf(",dup");
-				break;
-			case BTRFS_BLOCK_GROUP_RAID10:
-				printf(",raid10");
-				break;
-			case BTRFS_BLOCK_GROUP_RAID5:
-				printf(",raid5");
-				break;
-			case BTRFS_BLOCK_GROUP_RAID6:
-				printf(",raid6");
-				break;
-			default:
-				printf(",profile%" PRIu64,
-				       (uint64_t)(chunk->type &
-						  BTRFS_BLOCK_GROUP_PROFILE_MASK));
-				break;
-			}
-		}
-		printf("\t");
-
-		if (type == BTRFS_FILE_EXTENT_INLINE ||
-		    type == BTRFS_FILE_EXTENT_REG ||
-		    type == BTRFS_FILE_EXTENT_PREALLOC)
-			printf("%" PRIu64 "\t", logical_size);
-		else
-			printf("\t");
-
-		if (type == BTRFS_FILE_EXTENT_REG ||
-		    type == BTRFS_FILE_EXTENT_PREALLOC)
-			printf("%" PRIu64 "\t", logical_offset);
-		else
-			printf("\t");
-
-		if (type == BTRFS_FILE_EXTENT_INLINE ||
-		    type == BTRFS_FILE_EXTENT_REG ||
-		    type == BTRFS_FILE_EXTENT_PREALLOC)
-			printf("%" PRIu64 "\t", physical_size);
-		else
-			printf("\t");
-
-		if (chunk) {
-			uint64_t offset, stripe_nr, stripe_offset;
-			size_t stripe_index, num_stripes;
-			size_t i;
-
-			offset = logical_offset - chunk->offset;
-			stripe_nr = offset / chunk->stripe_len;
-			stripe_offset = offset - stripe_nr * chunk->stripe_len;
-			switch (chunk->type & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
-			case 0:
-			case BTRFS_BLOCK_GROUP_RAID0:
-				stripe_index = stripe_nr % chunk->num_stripes;
-				stripe_nr /= chunk->num_stripes;
-				num_stripes = 1;
-				break;
-			case BTRFS_BLOCK_GROUP_RAID1:
-			case BTRFS_BLOCK_GROUP_DUP:
-				stripe_index = 0;
-				num_stripes = chunk->num_stripes;
-				break;
-			case BTRFS_BLOCK_GROUP_RAID10: {
-				size_t factor;
-
-				factor = chunk->num_stripes / chunk->sub_stripes;
-				stripe_index = (stripe_nr % factor *
-						chunk->sub_stripes);
-				stripe_nr /= factor;
-				num_stripes = chunk->sub_stripes;
-				break;
-			}
-			case BTRFS_BLOCK_GROUP_RAID5:
-			case BTRFS_BLOCK_GROUP_RAID6: {
-				size_t nr_parity_stripes, nr_data_stripes;
-
-				if (chunk->type & BTRFS_BLOCK_GROUP_RAID6)
-					nr_parity_stripes = 2;
-				else
-					nr_parity_stripes = 1;
-				nr_data_stripes = (chunk->num_stripes -
-						   nr_parity_stripes);
-				stripe_index = stripe_nr % nr_data_stripes;
-				stripe_nr /= nr_data_stripes;
-				stripe_index = ((stripe_nr + stripe_index) %
-						chunk->num_stripes);
-				num_stripes = 1;
-				break;
-			}
-			default:
-				num_stripes = 0;
-				break;
-			}
-
-			for (i = 0; i < num_stripes; i++) {
-				if (i != 0)
-					printf("\n\t\t\t\t\t\t\t");
-				printf("%" PRIu64 "\t%" PRIu64,
-				       chunk->stripes[stripe_index].devid,
-				       chunk->stripes[stripe_index].offset +
-				       stripe_nr * chunk->stripe_len +
-				       stripe_offset);
-				stripe_index++;
-			}
-		}
-		printf("\n");
-
-next:
-		items_pos++;
-		buf_off += sizeof(*header) + header->len;
-		if (header->offset == UINT64_MAX)
-			break;
-		else
-			search.key.min_offset = header->offset + 1;
-	}
-	return 0;
-}
-
-int main(int argc, char **argv)
-{
-	struct option long_options[] = {
-		{"help", no_argument, NULL, 'h'},
-	};
-	int fd, ret;
-	struct chunk *chunks;
-	size_t num_chunks, i;
-
-	if (argv[0])
-		progname = argv[0];
-
-	for (;;) {
-		int c;
-
-		c = getopt_long(argc, argv, "h", long_options, NULL);
-		if (c == -1)
-			break;
-
-		switch (c) {
-		case 'h':
-			usage(false);
-		default:
-			usage(true);
-		}
-	}
-	if (optind != argc - 1)
-		usage(true);
-
-	fd = open(argv[optind], O_RDONLY);
-	if (fd == -1) {
-		perror("open");
-		return EXIT_FAILURE;
-	}
-
-	ret = read_chunk_tree(fd, &chunks, &num_chunks);
-	if (ret == -1)
-		goto out;
-
-	ret = print_extents(fd, chunks, num_chunks);
-out:
-	for (i = 0; i < num_chunks; i++)
-		free(chunks[i].stripes);
-	free(chunks);
-	close(fd);
-	return ret ? EXIT_FAILURE : EXIT_SUCCESS;
-}
-EndOfProgram
-
-  if [[ ! -f "$HOME"/btrfs_map_physical.c ]]; then
-    echo -e -n "Please run this script again to be sure that $HOME/btrfs_map_physical.c is created too."
-    exit 1
-  fi
-
-}
-
 function intro {
 
   clear
@@ -3020,7 +2447,6 @@ function format_create_install_system {
           echo -e -n "\nChrooting...\n\n"
           press_any_key_to_continue
           cp "$HOME"/chroot.sh /mnt/root/
-          cp "$HOME"/btrfs_map_physical.c /mnt/root/
 
           BTRFS_OPT="$BTRFS_OPT" boot_partition="$boot_partition" encryption_yn="$encryption_yn" luks_ot="$luks_ot" root_partition="$root_partition" \
             encrypted_name="$encrypted_name" lvm_yn="$lvm_yn" vg_name="$vg_name" lv_root_name="$lv_root_name" user_drive="$user_drive" final_drive="$final_drive" \
@@ -3033,8 +2459,6 @@ function format_create_install_system {
           header_fcis
           echo -e -n "\nCleaning...\n"
           rm -f /mnt/root/chroot.sh
-          rm -f /mnt/root/btrfs_map_physical.c
-          rm -f /mnt/root/btrfs_map_physical
 
           echo -e -n "\nUnmounting partitions...\n\n"
           if findmnt /mnt &>/dev/null; then