diff --git a/__main__.py b/__main__.py
index 6adcae2..8efc5be 100644
--- a/__main__.py
+++ b/__main__.py
@@ -4,77 +4,91 @@ import os
 import subprocess
 import sys
 
-import rwx
+import rwx.arg
+import rwx.fs
+import rwx.grub
+import rwx.ps
 
 CHARSET = 'UTF-8'
 
 PGP = 'git@marc.beninca.link'
 
 MODULES = (
-    'regexp',
-    'memdisk', 'tar',
-    'search',
-    'part_gpt', 'part_msdos',
-    'btrfs', 'ext2', 'fat', 'iso9660', 'udf',
-    'exfat', 'hfs', 'hfspluscomp', 'ntfscomp',
-    'linux', 'loopback', 'squash4',
+    ('regexp'),
+    ('memdisk', 'tar'),
+    ('search'),
+    ('part_gpt', 'part_msdos'),
+    ('btrfs', 'ext2', 'fat', 'iso9660', 'udf'),
+    ('exfat', 'hfs', 'hfspluscomp', 'ntfscomp'),
+    ('linux', 'loopback', 'squash4'),
 #
-    'at_keyboard', 'keylayouts', 'keystatus', 'read',
-    'halt', 'reboot',
-    'all_video', 'videoinfo',
-    'gfxterm_background', 'jpeg', 'png', 'tga',
+    ('at_keyboard', 'keylayouts', 'keystatus', 'read'),
+    ('halt', 'reboot'),
+    ('all_video', 'videoinfo'),
+    ('gfxterm_background', 'jpeg', 'png', 'tga'),
 #
-    'date', 'echo', 'eval', 'help', 'sleep', 'test', 'true',
-    'cpuid', 'lspci',
-    'cat', 'configfile', 'loadenv', 'progress', 'testspeed',
-    'hashsum', 'gcry_sha512', 'gcry_sha256',
-    'pgp', 'gcry_dsa', 'gcry_rsa',
-)
-BIOS_MODULES = (
-    'biosdisk',
-    'ntldr',
+    ('date', 'echo', 'eval', 'help', 'sleep', 'test', 'true'),
+    ('cpuid', 'lspci'),
+    ('cat', 'configfile', 'loadenv', 'progress', 'testspeed'),
+    ('hashsum', 'gcry_sha512', 'gcry_sha256'),
+    ('pgp', 'gcry_dsa', 'gcry_rsa'),
 )
 
 
-def run(*args):
-    return subprocess.run(args, capture_output=False)
-
-
-def run_line(*args):
-    lines = run_lines(*args)
-    return lines[0]
-
-
-def run_lines(*args):
-    process = subprocess.run(args, capture_output=True)
-    return process.stdout.decode(CHARSET).rstrip().split(os.linesep)
-
-
-def get_mount_uuid(path: str):
-    return run_line('findmnt', '--noheadings', '--output', 'UUID', path)
-
-
-def get_path_mount(path: str):
-    return run_line('stat', '--format', '%m', path)
-
-
-def get_path_uuid(path: str):
-    return get_mount_uuid(get_path_mount(path))
-
-
-def build(esp_root: str, data_uuid=None):
-    esp_uuid = get_path_uuid(esp_root)
+def build(esp_root: str, data_uuid: str=None) -> None:
+    esp_uuid = rwx.fs.get_path_uuid(esp_root)
+    #
+    memdisk_root = os.path.join(esp_root, 'memdisk')
+    efi_root = os.path.join(esp_root, 'efi')
+    efi_directory = os.path.join(efi_root, 'boot')
+    bios_root = os.path.join(esp_root, 'bios')
     grub_root = os.path.join(esp_root, 'grub')
+    grub_env = os.path.join(esp_root, 'grub.env')
+    #
     print(f'''
 esp_root: {esp_root}
 data_uuid: {data_uuid}
+↓
 esp_uuid: {esp_uuid}
+↓
+memdisk_root: {memdisk_root}
+efi_root: {efi_root}
+efi_directory: {efi_directory}
+bios_root: {bios_root}
 grub_root: {grub_root}
+grub_env: {grub_env}
 ''', end=str())
+    #
+    memdisk_directory = os.path.join(memdisk_root, 'boot', 'grub')
+    memdisk_file = os.path.join(memdisk_directory, 'grub.cfg')
+    memdisk_archive = os.path.join(memdisk_root, 'boot.tar')
+    #
+    print(f'''
+memdisk_directory: {memdisk_directory}
+memdisk_file: {memdisk_file}
+memdisk_archive: {memdisk_archive}
+''', end=str())
+    #
+    rwx.fs.wipe(memdisk_root)
+    rwx.fs.make_directory(memdisk_directory)
+    rwx.fs.empty_file(memdisk_file)
+    # EFI
+    rwx.fs.wipe(efi_root)
+    rwx.fs.make_directory(efi_directory)
+    # BIOS
+    rwx.fs.wipe(bios_root)
+    rwx.fs.make_directory(bios_root)
+    #
+    rwx.fs.wipe(memdisk_root)
+    # GRUB
+    rwx.fs.wipe(grub_root)
+    # GRUB / environment
+    rwx.fs.write(grub_env,
+        rwx.grub.ENV_HEADER.ljust(rwx.grub.ENV_BYTES, rwx.grub.ENV_COMMENT))
 
 
-def main():
-    command, *args = sys.argv
+def main() -> None:
+    command, args = rwx.arg.split()
     if args:
         data, *args = args
     else:
@@ -82,15 +96,20 @@ def main():
     project_file = os.path.realpath(__file__)
     project_root = os.path.dirname(project_file)
     parent_root, project_name = os.path.split(project_root)
+    #
     print(f'''
 command: {command}
 data: {data}
+args: {args}
+↓
 project_file: {project_file}
 project_root: {project_root}
 parent_root: {parent_root}
 project_name: {project_name}
 ''', end=str())
-    build(parent_root, data_uuid=data)
+    #
+    if project_name:
+        build(parent_root, data_uuid=data)
 
 
 if __name__ == '__main__':
diff --git a/rescue.sh b/rescue.sh
index ec0031b..58ab1ce 100644
--- a/rescue.sh
+++ b/rescue.sh
@@ -1,23 +1,23 @@
-function set_uuid {
-    ESP_UUID=''
-    DATA_UUID=''
-    if [ ! "${DATA_UUID}" ] ; then
-        DATA_UUID="${ESP_UUID}"
-    fi
-}
-
 function set_init {
-    set_uuid
     #
-    search --no-floppy --set data \\
-    --fs-uuid '${DATA_UUID}'
+    unset esp
+    search --no-floppy \
+    --set esp --fs-uuid '{}'
+    #
+    unset data
+    search --no-floppy \
+    --set data --fs-uuid '{}'
+    if [ ! "${data}" ] ; then
+        data="${esp}"
+    fi
     #
-    search --no-floppy --set esp \\
-    --fs-uuid '${ESP_UUID}'
     if [ "${esp}" ] ; then
+        # TODO {}
         env="(${esp})/grub.env"
-        live="(${esp})/${PROJECT}/live"
+        # TODO {}
+        live="(${esp})/lsgm/live"
         #
+        # TODO {}
         for file in ${live}/source/*.sh ; do
             source "${file}"
         done
@@ -26,14 +26,18 @@ function set_init {
 }
 
 function normal_init {
+    # TODO {}
     check_signatures='no'
-    pager=1
+    # TODO {}
+    pager=0
     #
     set_init
     if [ "${esp}" ] ; then
+        # TODO {}
         prefix="(${esp})/grub"
         root="${esp}"
         #
+        # TODO {}
         normal "${live}/normal.sh"
     fi
 }