adds some comments, fixes a few tiny bugs

kernel/arch/link.ld

@@ -1,25 +1,41 @@
-ENTRY(loader)
+/**
+ * This is the linker file.
+ *
+ * This file tells the linker (ld) how we want to arrange the code into the output file.
+ */
+ENTRY(loader) /* This is the first entry point, defined in boot.s */
 
 SECTIONS
 {
-	. = 1M;
+	/* 
+	 * This is telling the linker that anything after here should be loaded at 2M onwards
+	 * The reason for 2M, is that we want to give room for the BIOS, (and UEFI), 2M is generally regarded as a safe spot
+	 * to place the memory offset 
+	 * */
+	. = 2M; 
 
-	.text BLOCK(4K) : ALIGN(4K)
+	/*
+	 *  BLOCK is an alias for ALIGN, we're telling the linker that we want each section to be aligned at 4K
+	 */
+	.text BLOCK(4K) : ALIGN(4K) /* The first section we want is the text section, this is where most code is */
 	{
-		*(.multiboot)
-		*(.text)
+		*(.multiboot) /* Multiboot needs to be early in the file, required by grub */
+		*(.text) /* The text section */
 	}
 
+	/* R/O data */
 	.rodata BLOCK(4K) : ALIGN(4K)
 	{
 		*(.rodata)
 	}
 
+	/* Data */
 	.data BLOCK(4K) : ALIGN(4K)
 	{
 		*(.data)
 	}
 
+	/* BSS */
 	.bss BLOCK(4K) : ALIGN(4K)
 	{
 		*(COMMON)