diff --git a/Cargo.lock b/Cargo.lock
index ffd865b..badec2a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -381,6 +381,7 @@ dependencies = [
 [[package]]
 name = "kramdisk"
 version = "0.1.0"
+source = "git+https://github.com/Byte-OS/kramdisk.git#cccb30ddf105f783a3fc330eede9263e3e8e87c6"
 dependencies = [
  "devices",
  "log",
diff --git a/crates/kramdisk/Cargo.toml b/crates/kramdisk/Cargo.toml
deleted file mode 100644
index 74b10bc..0000000
--- a/crates/kramdisk/Cargo.toml
+++ /dev/null
@@ -1,11 +0,0 @@
-[package]
-name = "kramdisk"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-log = "0.4"
-virtio-drivers = { git = "https://github.com/rcore-os/virtio-drivers", rev = "61ece50"}
-devices = { git = "https://github.com/Byte-OS/devices.git" }
diff --git a/crates/kramdisk/build.rs b/crates/kramdisk/build.rs
deleted file mode 100644
index 4e71c8f..0000000
--- a/crates/kramdisk/build.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-#![feature(lazy_cell)]
-
-use std::{env, fs, path::PathBuf};
-
-#[allow(unused_macros)]
-macro_rules! display {
-    ($fmt:expr) => (println!("cargo:warning={}", format!($fmt)));
-    ($fmt:expr, $($arg:tt)*) => (println!(concat!("cargo:warning=", $fmt), $($arg)*));
-}
-
-fn main() {
-    let out_dir = PathBuf::from(env::var("OUT_DIR").expect("can't find manifest dir"));
-    let img_path = env::var("MOUNT_IMG_PATH").unwrap_or("mount.img".into());
-
-    fs::write(
-        out_dir.join("inc.S"),
-        format!(
-            ".section .data
-    .global ramdisk_start
-    .global ramdisk_end
-    .align 16
-    ramdisk_start:
-    .incbin \"{img_path}\"
-    ramdisk_end:"
-        ),
-    )
-    .expect("can't write ram file to out_dir");
-
-    // fs::write(path, contents)
-
-    // write module configuration to OUT_PATH, then it will be included in the main.rs
-    println!("cargo:rerun-if-env-changed=MOUNT_IMG_PATH");
-    println!("cargo:rerun-if-changed=mount.img");
-    println!("cargo:rerun-if-changed=build.rs");
-}
diff --git a/crates/kramdisk/src/lib.rs b/crates/kramdisk/src/lib.rs
deleted file mode 100644
index 3278181..0000000
--- a/crates/kramdisk/src/lib.rs
+++ /dev/null
@@ -1,82 +0,0 @@
-#![no_std]
-#![feature(used_with_arg)]
-
-use core::{
-    arch::global_asm,
-    ptr::{slice_from_raw_parts, slice_from_raw_parts_mut},
-};
-
-extern crate alloc;
-
-use alloc::sync::Arc;
-use devices::{
-    device::{BlkDriver, DeviceType, Driver},
-    driver_define,
-};
-use log::info;
-
-// 虚拟IO设备
-pub struct RamDiskBlock {
-    start: usize,
-    size: usize,
-}
-
-impl Driver for RamDiskBlock {
-    fn get_id(&self) -> &str {
-        "nvme"
-    }
-
-    fn get_device_wrapper(self: Arc<Self>) -> DeviceType {
-        DeviceType::BLOCK(self.clone())
-    }
-}
-
-impl BlkDriver for RamDiskBlock {
-    fn read_blocks(&self, sector_offset: usize, buf: &mut [u8]) {
-        let rlen = buf.len();
-        if (sector_offset * 0x200 + rlen) >= self.size {
-            panic!("can't out of ramdisk range")
-        };
-        unsafe {
-            buf.copy_from_slice(
-                slice_from_raw_parts((self.start + sector_offset * 0x200) as *const u8, buf.len())
-                    .as_ref()
-                    .expect("can't deref ptr in the Ramdisk"),
-            );
-            // let source = (self.start as *mut [u8; 512]).add(sector_offset);
-            // buf.copy_from_slice(source.as_mut().unwrap());
-        }
-    }
-
-    fn write_blocks(&self, sector_offset: usize, buf: &[u8]) {
-        let wlen = buf.len();
-        if (sector_offset * 0x200 + wlen) >= self.size {
-            panic!("can't out of ramdisk range")
-        };
-        unsafe {
-            slice_from_raw_parts_mut((self.start + sector_offset * 0x200) as *mut u8, buf.len())
-                .as_mut()
-                .expect("can't deref ptr in the ramdisk")
-                .copy_from_slice(buf);
-            // let dest = (self.start as *mut [u8; 512]).add(sector_offset);
-            // dest.as_mut().unwrap().copy_from_slice(buf);
-        }
-    }
-}
-
-global_asm!(include_str!(concat!(env!("OUT_DIR"), "/inc.S")));
-
-driver_define!({
-    extern "C" {
-        fn ramdisk_start();
-        fn ramdisk_end();
-    }
-    info!(
-        "ramdisk range: {:#x} - {:#x}",
-        ramdisk_start as usize, ramdisk_end as usize
-    );
-    Some(Arc::new(RamDiskBlock {
-        start: ramdisk_start as _,
-        size: ramdisk_end as usize - ramdisk_start as usize,
-    }))
-});
diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index 0ea9f96..bd486df 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -43,6 +43,6 @@ num-derive = "0.4"
 
 kvirtio = { git = "https://github.com/Byte-OS/driver-kvirtio.git" }
 kgoldfish-rtc = { git = "https://github.com/Byte-OS/driver-kgoldfish-rtc.git" }
-kramdisk = { version = "0.1.0", path = "../crates/kramdisk" }
+kramdisk = { git = "https://github.com/Byte-OS/kramdisk.git" }
 general-plic = { git = "https://github.com/Byte-OS/driver-general-plic.git" }
 ns16550a = { git = "https://github.com/Byte-OS/driver-ns16550a.git" }