diff --git a/docs/workflow/building/coreclr/linux-instructions.md b/docs/workflow/building/coreclr/linux-instructions.md
index f4166f0f0e49df..dac415c3da1b52 100644
--- a/docs/workflow/building/coreclr/linux-instructions.md
+++ b/docs/workflow/building/coreclr/linux-instructions.md
@@ -87,8 +87,9 @@ After the build is completed, there should some files placed in `artifacts/bin/c
 Create the Core_Root
 ===================
 
-The Core_Root folder will contain the built binaries, generated by `build.sh`, as well as the library packages required to run tests. Note that you need to build
-the libraries subset (`-subset libs`) before this command can be run.
+The Core_Root folder will contain the built binaries, generated by `build.sh`, as well as the library packages required to run tests. It is required that you build
+the libraries subset (`-subset libs`) before this command can be run. Note that this by default searches the libraries in Release mode, regardless of the runtime
+configuration you specify. If you built your libs in another configuration, then you have to pass down the appropriate flag `/p:LibrariesConfiguration=<your_config>`.
 
 ```
 ./src/tests/build.sh generatelayoutonly
diff --git a/docs/workflow/building/coreclr/osx-instructions.md b/docs/workflow/building/coreclr/osx-instructions.md
index 41e8d87de1a7ec..283dab9ac68862 100644
--- a/docs/workflow/building/coreclr/osx-instructions.md
+++ b/docs/workflow/building/coreclr/osx-instructions.md
@@ -26,7 +26,9 @@ After the build has completed, there should some files placed in `artifacts/bin/
 Create the Core_Root
 ===================
 
-The Core_Root folder will have the built binaries, from `src/coreclr/build.sh` and it will also include the CoreFX packages required to run tests.
+The Core_Root folder will contain the built binaries, generated by `build.sh`, as well as the library packages required to run tests. It is required that you build
+the libraries subset (`-subset libs`) before this command can be run. Note that this by default searches the libraries in Release mode, regardless of the runtime
+configuration you specify. If you built your libs in another configuration, then you have to pass down the appropriate flag `/p:LibrariesConfiguration=<your_config>`.
 
 ```
 ./src/tests/build.sh generatelayoutonly