Update Windows build instructions.
This updates the windows build instructions to clarify how
you need to adjust your PATH environment variable to pick
up depot_tools, and to note that NTFS is required.
diff --git a/docs/windows_build_instructions.md b/docs/windows_build_instructions.md
index 70ab1302..beadbba 100644
@@ -14,7 +14,8 @@
* A 64-bit Intel machine with at least 8GB of RAM. More than 16GB is highly
-* At least 100GB of free disk space.
+* At least 100GB of free disk space on an NTFS-formatted hard drive. FAT32
+ will not work, as some of the Git packfiles are larger than 4GB.
* Visual Studio 2015 Update 3, see below (no other version is supported).
* Windows 7 or newer.
@@ -52,20 +53,17 @@
Add depot_tools to the start of your PATH (must be ahead of any installs of
-Python). Assuming you unzipped the bundle to C:\src\depot_tools:
-With Administrator access:
+Python). Assuming you unzipped the bundle to C:\src\depot_tools, open:
Control Panel → System and Security → System → Advanced system settings
-Modify the PATH system variable to include C:\src\depot_tools.
+If you have Administrator access, Modify the PATH system variable and
+put `C:\src\depot_tools` at the front (or at least in front of any directory
+that might already have a copy of Python or Git).
-Without Administrator access:
-Control Panel → User Accounts → User Accounts → Change my environment variables
-Add a PATH user variable (or modify the existing one to include):
+If you don't have Administrator access, you can add a user-level PATH
+environment variable and put `C:\src\depot_tools` at the front, but
+if your system PATH has a Python in it, you will be out of luck.
Also, add a DEPOT_TOOLS_WIN_TOOLCHAIN system variable in the same way, and set
it to 0. This tells depot_tools to use your locally installed version of Visual