sagi21805 · sagi21805 · Jun 19, 2026 · Jun 19, 2026 · Jun 19, 2026 · Jun 19, 2026
diff --git a/book.toml b/book.toml
@@ -45,3 +45,7 @@ mathjax-support = true
 [output.html.playground]
 runnable = true
 editable = true
+
+[output.html.redirect]
+"/ch02-03-implementing-the-bitfields-proc-macro.html" = "/ch02-05-implementing-the-bitfields-proc-macro.html"
+"/ch03-00-printing-to-screen.html" = "/ch04-00-printing-to-screen.html"
diff --git a/src/SUMMARY.md b/src/SUMMARY.md
@@ -14,27 +14,30 @@
 - [A Minimal Bootloader](./ch02-00-a-minimal-bootloader.md)
     - [Legacy Legacy Legacy [OS]](./ch02-01-legacy-legacy-legacy.md)
     - [Entering Protected Mode [OS]](./ch02-02-entering-protected-mode.md)
-    - [Implementing the Bitfields Proc-Macro [RUST]](./ch02-03-implementing-the-bitfields-proc-macro.md)
     - [What is Memory Paging? [OS]](./ch02-03-what-is-memory-paging.md)
     - [Booting the Kernel [OS]](./ch02-04-booting-the-kernel.md)
-
-- [Printing To Screen [OS]](./ch03-00-printing-to-screen.md)
-- [Memory Management [OS]](./ch04-00-memory-management.md)
-    - [Memory Allocator Types [OS]](./ch04-01-memory-allocator-types.md)
-    - [Implementing a Bitmap [OS]](./ch04-02-implementing-a-bitmap.md)
-    - [Writing a Physical Page Allocator [OS]](./ch04-03-writing-a-physical-page-allocator.md)
-
-- [Interrupts and Exceptions [OS]](./ch05-00-interrupts-and-exceptions.md)
-    - [Utilizing the Interrupt Descriptor Table [OS]](./ch05-01-utilizing-the-idt.md)
-    - [The Programmable Interrupt Controller [OS]](./ch05-02-programmable-interrupt-controller.md)
-    - [Writing a Keyboard driver [OS]](./ch05-03-writing-a-keyboard-driver.md)
-
-- [File Systems and Disk Drivers [OS]](./ch06-00-file-systems-and-disk-drivers.md)
-    - [Disk Drivers [OS]](./ch06-01-disk-drivers.md)
-    - [Implementing a File System [OS]](./ch06-02-implementing-a-file-system.md)
-
-- [Processes and Scheduling [OS]](./ch07-00-processes-and-scheduling.md)
-    - [Thinking in Terms of Processes [OS]](./ch07-01-thinking-in-terms-of-processes.md)
-    - [Implementing a Process Scheduler [OS]](./ch07-02-implementing-a-process-scheduler.md)
-
-- [Writing a Shell [OS]](./ch08-00-writing-a-shell.md)
+    - [Implementing the Bitfields Proc-Macro [RUST]](./ch02-05-implementing-the-bitfields-proc-macro.md)
+
+- [Synchronization](./ch03-00-synchronization-primitives.md)
+    - [How Synchronization is Achieved on a Multiprocessor System [RUST]](./ch03-01-how-synchronization-is-achieved-on-a-multiprocessor-system.md)
+    - [Implementing Basic Synchronization Primitives [OS]](./ch03-02-implementing-basic-synchronization-primitives.md)
+- [Printing To Screen [OS]](./ch04-00-printing-to-screen.md)
+- [Memory Management [OS]](./ch05-00-memory-management.md)
+    - [Memory Allocator Types [OS]](./ch05-01-memory-allocator-types.md)
+    - [Implementing a Bitmap [OS]](./ch05-02-implementing-a-bitmap.md)
+    - [Writing a Physical Page Allocator [OS]](./ch05-03-writing-a-physical-page-allocator.md)
+
+- [Interrupts and Exceptions [OS]](./ch06-00-interrupts-and-exceptions.md)
+    - [Utilizing the Interrupt Descriptor Table [OS]](./ch06-01-utilizing-the-idt.md)
+    - [The Programmable Interrupt Controller [OS]](./ch06-02-programmable-interrupt-controller.md)
+    - [Writing a Keyboard driver [OS]](./ch06-03-writing-a-keyboard-driver.md)
+
+- [File Systems and Disk Drivers [OS]](./ch07-00-file-systems-and-disk-drivers.md)
+    - [Disk Drivers [OS]](./ch07-01-disk-drivers.md)
+    - [Implementing a File System [OS]](./ch07-02-implementing-a-file-system.md)
+
+- [Processes and Scheduling [OS]](./ch08-00-processes-and-scheduling.md)
+    - [Thinking in Terms of Processes [OS]](./ch08-01-thinking-in-terms-of-processes.md)
+    - [Implementing a Process Scheduler [OS]](./ch08-02-implementing-a-process-scheduler.md)
+
+- [Writing a Shell [OS]](./ch09-00-writing-a-shell.md)
diff --git a/...-implementing-the-bitfields-proc-macro.md → ...-implementing-the-bitfields-proc-macro.md b/...-implementing-the-bitfields-proc-macro.md → ...-implementing-the-bitfields-proc-macro.md
diff --git a/src/ch03-00-synchronization-primitives.md b/src/ch03-00-synchronization-primitives.md
@@ -0,0 +1,9 @@
+# Synchronization
+
+_"Shared mutable state is the root of all evil."_
+
+ ---
+
+ #![repository_card]
+
+Coming soon!
diff --git a/src/ch03-01-how-synchronization-is-achieved-on-a-multiprocessor-system.md b/src/ch03-01-how-synchronization-is-achieved-on-a-multiprocessor-system.md
@@ -0,0 +1,9 @@
+# How Synchronization is Achieved on a Multiprocessor System
+
+_"There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies." - C.A.R. Hoare_
+
+---
+
+#![repository_card]
+
+Coming soon!
diff --git a/src/ch03-02-implementing-basic-synchronization-primitives.md b/src/ch03-02-implementing-basic-synchronization-primitives.md
@@ -0,0 +1,9 @@
+# Implementing Basic Synchronization Primitives
+
+_"I was motivated by fear of the nondeterminism of concurrency and wanted to prove that it was tamed in my programs." — Edsger W. Dijkstra_
+
+---
+
+#![repository_card]
+
+Coming soon!
diff --git a/src/ch03-00-printing-to-screen.md → src/ch04-00-printing-to-screen.md b/src/ch03-00-printing-to-screen.md → src/ch04-00-printing-to-screen.md
diff --git a/src/ch04-00-memory-management.md → src/ch05-00-memory-management.md b/src/ch04-00-memory-management.md → src/ch05-00-memory-management.md
diff --git a/src/ch04-01-memory-allocator-types.md → src/ch05-01-memory-allocator-types.md b/src/ch04-01-memory-allocator-types.md → src/ch05-01-memory-allocator-types.md
diff --git a/src/ch04-02-implementing-a-bitmap.md → src/ch05-02-implementing-a-bitmap.md b/src/ch04-02-implementing-a-bitmap.md → src/ch05-02-implementing-a-bitmap.md
diff --git a/...4-03-writing-a-physical-page-allocator.md → ...5-03-writing-a-physical-page-allocator.md b/...4-03-writing-a-physical-page-allocator.md → ...5-03-writing-a-physical-page-allocator.md
diff --git a/src/ch05-00-interrupts-and-exceptions.md → src/ch06-00-interrupts-and-exceptions.md b/src/ch05-00-interrupts-and-exceptions.md → src/ch06-00-interrupts-and-exceptions.md
diff --git a/src/ch05-01-utilizing-the-idt.md → src/ch06-01-utilizing-the-idt.md b/src/ch05-01-utilizing-the-idt.md → src/ch06-01-utilizing-the-idt.md
diff --git a/...5-02-programmable-interrupt-controller.md → ...6-02-programmable-interrupt-controller.md b/...5-02-programmable-interrupt-controller.md → ...6-02-programmable-interrupt-controller.md
diff --git a/src/ch05-03-writing-a-keyboard-driver.md → src/ch06-03-writing-a-keyboard-driver.md b/src/ch05-03-writing-a-keyboard-driver.md → src/ch06-03-writing-a-keyboard-driver.md
diff --git a/src/ch06-00-file-systems-and-disk-drivers.md → src/ch07-00-file-systems-and-disk-drivers.md b/src/ch06-00-file-systems-and-disk-drivers.md → src/ch07-00-file-systems-and-disk-drivers.md
diff --git a/src/ch06-01-disk-drivers.md → src/ch07-01-disk-drivers.md b/src/ch06-01-disk-drivers.md → src/ch07-01-disk-drivers.md
diff --git a/src/ch06-02-implementing-a-file-system.md → src/ch07-02-implementing-a-file-system.md b/src/ch06-02-implementing-a-file-system.md → src/ch07-02-implementing-a-file-system.md
diff --git a/src/ch07-00-processes-and-scheduling.md → src/ch08-00-processes-and-scheduling.md b/src/ch07-00-processes-and-scheduling.md → src/ch08-00-processes-and-scheduling.md
diff --git a/...ch07-01-thinking-in-terms-of-processes.md → ...ch08-01-thinking-in-terms-of-processes.md b/...ch07-01-thinking-in-terms-of-processes.md → ...ch08-01-thinking-in-terms-of-processes.md
diff --git a/...07-02-implementing-a-process-scheduler.md → ...08-02-implementing-a-process-scheduler.md b/...07-02-implementing-a-process-scheduler.md → ...08-02-implementing-a-process-scheduler.md
diff --git a/src/ch08-00-writing-a-shell.md → src/ch09-00-writing-a-shell.md b/src/ch08-00-writing-a-shell.md → src/ch09-00-writing-a-shell.md