diff --git a/src/internal/log/log.go b/src/internal/log/log.go
index e34f6d9..18808c7 100644
--- a/src/internal/log/log.go
+++ b/src/internal/log/log.go
@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/sunbk201/ua3f/internal/config"
+	"golang.org/x/sys/unix"
 	"gopkg.in/natefinch/lumberjack.v2"
 )
 
@@ -58,7 +59,7 @@ func SetLogConf(level string) {
 
 func LogHeader(version string, cfg *config.Config) {
 	slog.Info("UA3F started", "version", version, "", cfg)
-	slog.Info("System Info", slog.String("Go Version", strings.TrimPrefix(strings.TrimSpace(runtime.Version()), "go")), slog.String("OS/Arch", runtime.GOOS+"/"+runtime.GOARCH))
+	slog.Info("OS Info", GetOSInfo()...)
 }
 
 func LogDebugWithAddr(src string, dest string, msg string) {
@@ -99,6 +100,51 @@ func LoadLocalLocation() *time.Location {
 	return time.UTC
 }
 
+func GetOSInfo() (attrs []any) {
+
+	attrs = append(attrs,
+		slog.String("GOOS", runtime.GOOS),
+		slog.String("GOARCH", runtime.GOARCH),
+		slog.String("Go Version", runtime.Version()),
+	)
+
+	if hostname, err := os.Hostname(); err == nil {
+		attrs = append(attrs, slog.String("hostname", hostname))
+	}
+
+	switch runtime.GOOS {
+	case "linux", "darwin", "freebsd", "openbsd", "netbsd":
+		var uname unix.Utsname
+		if err := unix.Uname(&uname); err == nil {
+			toStr := func(b []byte) string {
+				n := 0
+				for ; n < len(b); n++ {
+					if b[n] == 0 {
+						break
+					}
+				}
+				return strings.TrimSpace(string(b[:n]))
+			}
+			attrs = append(attrs,
+				slog.String("sysname", toStr(uname.Sysname[:])),
+				slog.String("nodename", toStr(uname.Nodename[:])),
+				slog.String("release", toStr(uname.Release[:])),
+				slog.String("version", toStr(uname.Version[:])),
+				slog.String("machine", toStr(uname.Machine[:])),
+			)
+		}
+	case "windows":
+		osver := "unknown"
+		if v, ok := os.LookupEnv("OS"); ok {
+			osver = v
+		}
+		attrs = append(attrs, slog.String("os_version", osver))
+	default:
+		attrs = append(attrs, slog.String("info", "unknown OS details"))
+	}
+	return attrs
+}
+
 func trim(s string) string {
 	for len(s) > 0 && (s[len(s)-1] == '\n' || s[len(s)-1] == '\r' || s[len(s)-1] == ' ') {
 		s = s[:len(s)-1]