diff --git a/.gitignore b/.gitignore
index 93f9aa4..0109bc0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,7 @@ build/
 ext/
 .gdb_history
 
+/linux
+
 *.swp
 *~
diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index e193a77..0000000
--- a/.gitmodules
+++ /dev/null
@@ -1,4 +0,0 @@
-[submodule "linux"]
-	path = linux
-	url = https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
-	branch = linux-6.6.y
diff --git a/README.md b/README.md
index 5dec482..9c71180 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,11 @@ sudo apt install qemu-system-x86 grub-pc-bin e2fsprogs
 git clone <REPOSITORY_URL>
 cd kernel-study
 
-git submodule update --init --recursive --remote --depth 1
+git clone --depth 1 --branch linux-6.6.y https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git linux
+cd linux
+make defconfig
+# make menuconfig
+
 make
 ```
 
diff --git a/linux b/linux
deleted file mode 160000
index 5fa4793..0000000
--- a/linux
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 5fa4793a2d2d70ad08b85387b41020f1fcc2d19e