diff --git a/Create-DevTerm-R01-OS-image-from-scratch.md b/Create-DevTerm-R01-OS-image-from-scratch.md
index f3822ee..d703872 100644
--- a/Create-DevTerm-R01-OS-image-from-scratch.md
+++ b/Create-DevTerm-R01-OS-image-from-scratch.md
@@ -35,6 +35,21 @@ install qemu static for chroot
 `sudo apt install qemu-user-static`
 
 
+manually fix default compiler link:
+
+```
+sudo ln -s /usr/bin/riscv64-linux-gnu-cpp-11 /usr/bin/riscv64-linux-gnu-cpp
+sudo ln -s /usr/bin/riscv64-linux-gnu-gcc-nm-11 /usr/bin/riscv64-linux-gnu-gcc-nm
+sudo ln -s /usr/bin/riscv64-linux-gnu-gcov-dump-11 /usr/bin/riscv64-linux-gnu-gcov-dump
+sudo ln -s /usr/bin/riscv64-linux-gnu-gcc-11 /usr/bin/riscv64-linux-gnu-gcc
+sudo ln -s /usr/bin/riscv64-linux-gnu-gcc-ranlib-11 /usr/bin/riscv64-linux-gnu-gcc-ranlib
+sudo ln -s /usr/bin/riscv64-linux-gnu-gcov-tool-11 /usr/bin/riscv64-linux-gnu-gcov-tool
+sudo ln -s /usr/bin/riscv64-linux-gnu-gcc-ar-11 /usr/bin/riscv64-linux-gnu-gcc-ar
+sudo ln -s /usr/bin/riscv64-linux-gnu-gcov-11 /usr/bin/riscv64-linux-gnu-gcov
+sudo ln -s /usr/bin/riscv64-linux-gnu-lto-dump-11 /usr/bin/riscv64-linux-gnu-lto-dump
+```
+
+
 # Bootloader
 
 ### reference doc: