diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index b6411f7777..69aad0c5f3 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -421,6 +421,7 @@ remember_me.compromised = The login token is not valid anymore which may indicat
 forgot_password_title= Forgot Password
 forgot_password = Forgot password?
 need_account = Need an account?
+sign_up_tip = You are registering the first account in the system. Upon successful registration, you will become the Super Administrator. Please carefully remember your username and password, as losing this information could cause significant inconvenience later.
 sign_up_now = Register now.
 sign_up_successful = Account was successfully created. Welcome!
 confirmation_mail_sent_prompt_ex = A new confirmation email has been sent to <b>%s</b>. Please check your inbox within the next %s to complete the registration process. If your registration email address is incorrect, you can sign in again and change it.
diff --git a/routers/install/install.go b/routers/install/install.go
index 2962f3948f..bd7810e809 100644
--- a/routers/install/install.go
+++ b/routers/install/install.go
@@ -558,6 +558,8 @@ func SubmitInstall(ctx *context.Context) {
 			}
 			log.Info("Admin account already exist")
 			u, _ = user_model.GetUserByName(ctx, u.Name)
+		} else {
+			ctx.Data["IsAccountCreated"] = true
 		}
 
 		nt, token, err := auth_service.CreateAuthTokenForUserID(ctx, u.ID)
diff --git a/routers/web/auth/auth.go b/routers/web/auth/auth.go
index 69b9d285b7..f07e821e01 100644
--- a/routers/web/auth/auth.go
+++ b/routers/web/auth/auth.go
@@ -424,6 +424,8 @@ func SignUp(ctx *context.Context) {
 
 	ctx.Data["SignUpLink"] = setting.AppSubURL + "/user/sign_up"
 
+	ctx.Data["IsFirstTimeRegistration"] = user_model.CountUsers(ctx, nil) == 0
+
 	oauth2Providers, err := oauth2.GetOAuth2Providers(ctx, optional.Some(true))
 	if err != nil {
 		ctx.ServerError("UserSignUp", err)
diff --git a/templates/post-install.tmpl b/templates/post-install.tmpl
index 0c9aa35c90..44099ce29d 100644
--- a/templates/post-install.tmpl
+++ b/templates/post-install.tmpl
@@ -4,7 +4,7 @@
 		<!-- the "cup" has a handler, so move it a little leftward to make it visually in the center -->
 		<div class="tw-ml-[-30px]"><img width="160" src="{{AssetUrlPrefix}}/img/loading.png" alt aria-hidden="true"></div>
 		<div class="tw-my-[2em] tw-text-[18px]">
-			<a id="goto-user-login" href="{{AppSubUrl}}/user/login">{{ctx.Locale.Tr "install.installing_desc"}}</a>
+			<a id="goto-signup-or-signin" href="{{AppSubUrl}}{{if .IsAccountCreated}}/user/login{{else}}/user/sign_up{{end}}">{{ctx.Locale.Tr "install.installing_desc"}}</a>
 		</div>
 	</div>
 </div>
diff --git a/templates/user/auth/signup_inner.tmpl b/templates/user/auth/signup_inner.tmpl
index d66568199d..a3f6e1471f 100644
--- a/templates/user/auth/signup_inner.tmpl
+++ b/templates/user/auth/signup_inner.tmpl
@@ -7,6 +7,9 @@
 		{{end}}
 	</h4>
 	<div class="ui attached segment">
+		{{if .IsFirstTimeRegistration}}
+			<p>{{ctx.Locale.Tr "auth.sign_up_tip"}}</p>
+		{{end}}
 		<form class="ui form" action="{{.SignUpLink}}" method="post">
 			{{.CsrfTokenHtml}}
 			{{if or (not .LinkAccountMode) (and .LinkAccountMode .LinkAccountModeRegister)}}
diff --git a/web_src/js/features/install.ts b/web_src/js/features/install.ts
index 34df4757f9..bd8e57265c 100644
--- a/web_src/js/features/install.ts
+++ b/web_src/js/features/install.ts
@@ -104,7 +104,7 @@ function initPreInstall() {
 }
 
 function initPostInstall() {
-  const el = document.querySelector('#goto-user-login');
+  const el = document.querySelector('#goto-signup-or-signin');
   if (!el) return;
 
   const targetUrl = el.getAttribute('href');