diff --git a/docs/xml/Java.Nio.FileNio/FileStore.xml b/docs/xml/Java.Nio.FileNio/FileStore.xml
index 8e8bedb24..e8c0f371c 100644
--- a/docs/xml/Java.Nio.FileNio/FileStore.xml
+++ b/docs/xml/Java.Nio.FileNio/FileStore.xml
@@ -296,9 +296,15 @@
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
-        <value>To be added.</value>
+        <summary>Gets whether this file store is read-only.</summary>
+        <value><c>true</c> if and only if this file store is read-only; otherwise, <c>false</c>.</value>
         <remarks>
+          <para>A file store is read-only when it does not support write operations or other changes to files. Attempts to create a file or open an existing file for writing cause an <c>IOException</c>.</para>
+          <para>
+            <format type="text/html">
+              <a href="https://developer.android.com/reference/java/nio/file/FileStore#isReadOnly()" title="Reference documentation">Java documentation for <code>java.nio.file.FileStore.isReadOnly()</code>.</a>
+            </format>
+          </para>
           <para>Portions of this page are modifications based on work created and shared by the <format type="text/html"><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a></format> and used according to terms described in the <format type="text/html"><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a></format></para>
         </remarks>
       </Docs>
@@ -581,11 +587,17 @@
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
-        <value>To be added.</value>
+        <summary>Gets the size of this file store in bytes.</summary>
+        <value>The size of this file store in bytes, or <c>long.MaxValue</c> if its size exceeds that value.</value>
         <remarks>
+          <para>
+            <format type="text/html">
+              <a href="https://developer.android.com/reference/java/nio/file/FileStore#getTotalSpace()" title="Reference documentation">Java documentation for <code>java.nio.file.FileStore.getTotalSpace()</code>.</a>
+            </format>
+          </para>
           <para>Portions of this page are modifications based on work created and shared by the <format type="text/html"><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a></format> and used according to terms described in the <format type="text/html"><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a></format></para>
         </remarks>
+        <exception cref="T:Java.IO.IOException">If an I/O error occurs.</exception>
       </Docs>
     </Member>
     <Member MemberName="Type">
@@ -657,11 +669,18 @@
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
-        <value>To be added.</value>
+        <summary>Gets the number of unallocated bytes in this file store.</summary>
+        <value>The number of unallocated bytes, or <c>long.MaxValue</c> if the number exceeds that value.</value>
         <remarks>
+          <para>This value is a hint, not a guarantee; it is most accurate immediately after retrieval and may be affected by external I/O operations.</para>
+          <para>
+            <format type="text/html">
+              <a href="https://developer.android.com/reference/java/nio/file/FileStore#getUnallocatedSpace()" title="Reference documentation">Java documentation for <code>java.nio.file.FileStore.getUnallocatedSpace()</code>.</a>
+            </format>
+          </para>
           <para>Portions of this page are modifications based on work created and shared by the <format type="text/html"><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a></format> and used according to terms described in the <format type="text/html"><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a></format></para>
         </remarks>
+        <exception cref="T:Java.IO.IOException">If an I/O error occurs.</exception>
       </Docs>
     </Member>
     <Member MemberName="UsableSpace">
@@ -688,11 +707,18 @@
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
-        <value>To be added.</value>
+        <summary>Gets the number of bytes available to this Java virtual machine on this file store.</summary>
+        <value>The number of available bytes, or <c>long.MaxValue</c> if the number exceeds that value.</value>
         <remarks>
+          <para>This value is a hint, not a guarantee; it is most accurate immediately after retrieval and may be affected by external I/O operations.</para>
+          <para>
+            <format type="text/html">
+              <a href="https://developer.android.com/reference/java/nio/file/FileStore#getUsableSpace()" title="Reference documentation">Java documentation for <code>java.nio.file.FileStore.getUsableSpace()</code>.</a>
+            </format>
+          </para>
           <para>Portions of this page are modifications based on work created and shared by the <format type="text/html"><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a></format> and used according to terms described in the <format type="text/html"><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a></format></para>
         </remarks>
+        <exception cref="T:Java.IO.IOException">If an I/O error occurs.</exception>
       </Docs>
     </Member>
   </Members>