diff --git a/management/images/568state.bin b/management/images/568state.bin
deleted file mode 100644
index 205f2219..00000000
Binary files a/management/images/568state.bin and /dev/null differ
diff --git a/management/images/freebsd_state.bin.zst b/management/images/freebsd_state.bin.zst
deleted file mode 100644
index 0031c972..00000000
Binary files a/management/images/freebsd_state.bin.zst and /dev/null differ
diff --git a/management/images/linux4.iso b/management/images/linux4.iso
new file mode 100644
index 00000000..db2ba837
Binary files /dev/null and b/management/images/linux4.iso differ
diff --git a/management/index.html b/management/index.html
index d69ed022..a2f5de43 100644
--- a/management/index.html
+++ b/management/index.html
@@ -27,9 +27,12 @@
 			vga_bios: {
 				url: "/lib/tools/v86/bios/vgabios.bin",
 			},
-			fda: {
-				url: "/management/images/freebsd_state.bin.zst",
+			cdrom: {
+				url: "/management/images/linux4.iso",
 			},
+			// fda: {
+			// 	url: "/management/images/freebsd_state.bin.zst",
+			// },
 			// initial_state: {
 			// 	url: "/management/images/568state.bin",
 			// },
@@ -55,9 +58,8 @@
             <div class="item">
                 <h2>控制</h2>
 				<div class="child">
-					<a href="/">控制选项一</a>
+					<a href="#">控制选项一</a>
 					<a href="#">控制选项二</a>
-					<a style="cursor:pointer" onclick="javascript:history.back(-1);">控制选项三</a>
 				</div>
             </div>
 			<div class="item">