diff --git a/.cargo/config.toml b/.cargo/config.toml
index ce554d4..535da60 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -6,4 +6,4 @@ build-std = ["core", "compiler_builtins", "alloc"]
 build-std-features = ["compiler-builtins-mem"]
 
 [target.riscv64]
-runner = "qemu-system-riscv64 -machine virt -device bochs-display -bios none -m 512M -device loader,file=/home/julien/ensimag/TPs/kernel/disk.img,addr=0x90000000 -s -S -kernel"
+runner = "qemu-system-riscv64 -machine virt -device bochs-display -bios none -m 512M -device loader,file=/home/julien/ensimag/TPs/kernel/disk.img,addr=0x90000000 -kernel"
diff --git a/.gitignore b/.gitignore
index 5e32340..17c4a3b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,7 @@
 .helix
 
 **/target
-Cargo.lock
+**/Cargo.lock
 
 disk.img
-out.mem
+**/*.mem
diff --git a/Cargo.toml b/Cargo.toml
index 485655a..e0f18c4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,8 @@
+cargo-features = ["profile-rustflags"]
+
 [workspace]
 resolver = "3"
-members = ["kernel", "test_pic"]
+members = ["kernel", "user/*"]
 default-members = ["kernel"]
 
 [profile.dev]
diff --git a/bffs/src/lib.rs b/bffs/src/lib.rs
deleted file mode 100644
index f394512..0000000
--- a/bffs/src/lib.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-#![no_std]
-
-const MAGIC_NUMBER: usize = 0xBFF5;
diff --git a/bffs/Cargo.toml b/crates/bffs/Cargo.toml
similarity index 100%
rename from bffs/Cargo.toml
rename to crates/bffs/Cargo.toml
diff --git a/crates/bffs/src/lib.rs b/crates/bffs/src/lib.rs
new file mode 100644
index 0000000..c859c38
--- /dev/null
+++ b/crates/bffs/src/lib.rs
@@ -0,0 +1,3 @@
+#![no_std]
+
+// const MAGIC_NUMBER: usize = 0xBFF5;
diff --git a/kernel-macros/Cargo.toml b/crates/kernel-macros/Cargo.toml
similarity index 100%
rename from kernel-macros/Cargo.toml
rename to crates/kernel-macros/Cargo.toml
diff --git a/kernel-macros/src/image.rs b/crates/kernel-macros/src/image.rs
similarity index 100%
rename from kernel-macros/src/image.rs
rename to crates/kernel-macros/src/image.rs
diff --git a/kernel-macros/src/lib.rs b/crates/kernel-macros/src/lib.rs
similarity index 100%
rename from kernel-macros/src/lib.rs
rename to crates/kernel-macros/src/lib.rs
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..a1981e6
--- /dev/null
+++ b/justfile
@@ -0,0 +1,20 @@
+release := ""
+cargo_flags := if release != "" { "--release" } else { "" }
+
+default: run
+
+build_user_prog prog:
+    cd {{ "user" / prog }} && \
+    RUSTFLAGS="-C relocation-model=pic" cargo b {{ cargo_flags }}
+    riscv64-elf-objcopy -O binary {{ "target/riscv64/debug" / prog }} {{ "user" / prog / prog + ".mem" }}
+
+build: (map_dir "user" "build_user_prog")
+    cargo b {{ cargo_flags }}
+
+run: build
+    cargo r {{ cargo_flags }} --bin kernel-rust
+
+map_dir dir recipe:
+    @for file in `ls {{ dir }}`; do \
+        just cargo_flags={{ cargo_flags }} {{ recipe }} $file ; \
+    done
diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index fa67d50..43ed44c 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -5,7 +5,7 @@ edition = "2024"
 
 [dependencies]
 embedded-alloc = "0.7"
-kernel-macros = { path = "../kernel-macros" }
+kernel-macros = { path = "../crates/kernel-macros" }
 log = "0.4"
 critical-section = { version = "1", features = ["restore-state-bool"] }
-bffs = { path = "../bffs" }
+bffs = { path = "../crates/bffs" }
diff --git a/kernel/src/main.rs b/kernel/src/main.rs
index 6288e88..d9480d6 100644
--- a/kernel/src/main.rs
+++ b/kernel/src/main.rs
@@ -53,7 +53,6 @@ pub extern "C" fn supervisor_mode_entry() {
         init_log().unwrap();
         Vga::init();
         scheduler_init();
-        // enable_supervisor_interrupt();
     }
 
     info!("Hello World !");
@@ -62,7 +61,7 @@ pub extern "C" fn supervisor_mode_entry() {
     create_process(test, "proc1");
     create_process(proc2, "proc2");
 
-    // MemoryDisk::new();
+    MemoryDisk::test();
 
     enable_supervisor_interrupt();
     idle();
diff --git a/kernel/src/tests_fat.rs b/kernel/src/tests_fat.rs
index 4f87839..e701eef 100644
--- a/kernel/src/tests_fat.rs
+++ b/kernel/src/tests_fat.rs
@@ -2,12 +2,11 @@ use core::str;
 use log::info;
 
 const DISK_ADDR: usize = 0x9000_0000;
-const DISK_SIZE: usize = 16 * 1024 * 1024; // 16MB
 
 pub struct MemoryDisk {}
 
 impl MemoryDisk {
-    pub fn new() {
+    pub fn test() {
         let test = unsafe { str::from_raw_parts(DISK_ADDR as *const u8, 13) };
         info!("{}", test);
     }
diff --git a/kernel/src/user.rs b/kernel/src/user.rs
index 884812a..53f08c4 100644
--- a/kernel/src/user.rs
+++ b/kernel/src/user.rs
@@ -1,13 +1,11 @@
-use core::{arch::asm, time::Duration};
-
-use log::info;
+use core::time::Duration;
 
 use crate::syscall::{sleep, write_int_temp, write_string_temp};
 
 #[repr(align(32))]
-struct Alignement([u8; 132]);
+struct Alignement([u8; 136]);
 
-static PROG: Alignement = Alignement(*include_bytes!("../../out.mem"));
+static PROG: Alignement = Alignement(*include_bytes!("../../user/test_pic/test_pic.mem"));
 
 pub fn test() {
     write_int_temp(PROG.0.as_ptr() as u64);
diff --git a/test_pic/Cargo.toml b/user/test_pic/Cargo.toml
similarity index 100%
rename from test_pic/Cargo.toml
rename to user/test_pic/Cargo.toml
diff --git a/test_pic/build.rs b/user/test_pic/build.rs
similarity index 100%
rename from test_pic/build.rs
rename to user/test_pic/build.rs
diff --git a/test_pic/src/main.rs b/user/test_pic/src/main.rs
similarity index 90%
rename from test_pic/src/main.rs
rename to user/test_pic/src/main.rs
index 00cdcd3..dc361d9 100644
--- a/test_pic/src/main.rs
+++ b/user/test_pic/src/main.rs
@@ -1,8 +1,6 @@
 #![no_std]
 #![no_main]
 
-use core::arch::global_asm;
-
 #[panic_handler]
 fn panic(_panic_info: &core::panic::PanicInfo) -> ! {
     loop {}
@@ -20,5 +18,4 @@ pub extern "C" fn entry() {
             clobber_abi("system")
         );
     }
-    loop {}
 }