diff --git a/src/main/java/com/mini/capi/utils/HostInfo.java b/src/main/java/com/mini/capi/utils/HostInfo.java
index 8b87b76..a9f8bb9 100644
--- a/src/main/java/com/mini/capi/utils/HostInfo.java
+++ b/src/main/java/com/mini/capi/utils/HostInfo.java
@@ -6,7 +6,6 @@ import com.mini.capi.biz.domain.DiskMount;
 import com.mini.capi.biz.domain.SysHost;
 
 import java.io.*;
-import java.math.BigDecimal;
 import java.util.*;
 
 public final class HostInfo {
@@ -67,7 +66,7 @@ public final class HostInfo {
         return out.toString().trim();
     }
 
-    private static void waitForExit(ChannelExec ch) throws Exception {
+    private static void waitForExit(ChannelExec ch) {
         long start = System.currentTimeMillis();
         while (!ch.isClosed()) {
             if (System.currentTimeMillis() - start > 30_000) {
diff --git a/src/main/java/com/mini/capi/utils/vF.java b/src/main/java/com/mini/capi/utils/vF.java
index 4eacd6e..f4a0bd1 100644
--- a/src/main/java/com/mini/capi/utils/vF.java
+++ b/src/main/java/com/mini/capi/utils/vF.java
@@ -1,27 +1,29 @@
 package com.mini.capi.utils;
 
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
 public class vF {
 
 
-
     private static final String[] UNITS = {"B", "K", "M", "G", "T", "P"};
-
+    private static final BigDecimal KB = BigDecimal.valueOf(1024L);
 
     public static String format(long bytes) {
         if (bytes < 0) {
             throw new IllegalArgumentException("字节数不能为负数");
         }
 
+        BigDecimal size = BigDecimal.valueOf(bytes);
         int unitIndex = 0;
-        double size = bytes;
 
-        while (size >= 1024 && unitIndex < UNITS.length - 1) {
-            size /= 1024;
+        while (size.compareTo(KB) >= 0 && unitIndex < UNITS.length - 1) {
+            size = size.divide(KB, 2, RoundingMode.HALF_UP);
             unitIndex++;
         }
 
-        // 保留最多一位小数，去掉多余的 .0
-        return String.format("%.1f", size).replace(".0", "") + UNITS[unitIndex];
+        String num = size.stripTrailingZeros().toPlainString();
+        return num + UNITS[unitIndex];
     }