diff --git a/README.en.md b/README.en.md
index baec219..2cc5aea 100644
--- a/README.en.md
+++ b/README.en.md
@@ -13,7 +13,7 @@ One-Click Script to Reinstall System [中文](README.md)
 - Supports installation of 17 common Linux distributions
 - Supports installation of official Windows ISO, automatically finds ISO links, and integrates virtual machine drivers
 - Supports installation in any direction, i.e., `Linux to Linux`, `Linux to Windows`, `Windows to Windows`, `Windows to Linux`
-- No need to input IP parameters; automatically recognizes dynamic and static IPs, supports `/32`, `/128`, `gateway outside subnet`, `pure IPv6`, `dual NIC` and other special network configurations
+- No need to input IP parameters; automatically recognizes dynamic and static IPs, supports `/32`, `/128`, `gateway outside subnet`, `IPv6 only`, `dual NIC` and other special network configurations
 - Specially optimized for low-spec servers, requires less memory than the official netboot
 - Uses partition table ID to identify hard drives throughout the process, ensuring no wrong disk is written
 - Supports BIOS and EFI boot, and ARM architecture
@@ -242,7 +242,7 @@ bash reinstall.sh windows \
 <summary>The following website provides iso links.</summary>
 
 - <https://massgrave.dev/genuine-installation-media.html> (Recommended, iso sourced from official channels, updated monthly, includes the latest patches)
-- <https://www.microsoft.com/software-download/windows10> (Need to open it with a mobile User-Agent)
+- <https://www.microsoft.com/software-download/windows10> (Need to open it with a non-Windows User-Agent)
 - <https://www.microsoft.com/software-download/windows11>
 - <https://www.microsoft.com/software-download/windowsinsiderpreviewiso> (Preview)
 - <https://www.microsoft.com/evalcenter/download-windows-10-enterprise>
diff --git a/README.md b/README.md
index dcd55f7..04eeb7e 100644
--- a/README.md
+++ b/README.md
@@ -242,7 +242,7 @@ bash reinstall.sh windows \
 <summary>以下网站可找到 iso 链接</summary>
 
 - <https://massgrave.dev/genuine-installation-media.html> (推荐，iso 来自官方，每月更新，包含最新补丁)
-- <https://www.microsoft.com/software-download/windows10> (需用手机 User-Agent 打开)
+- <https://www.microsoft.com/software-download/windows10> (需用非 Windows User-Agent 打开)
 - <https://www.microsoft.com/software-download/windows11>
 - <https://www.microsoft.com/software-download/windowsinsiderpreviewiso> (预览版)
 - <https://www.microsoft.com/evalcenter/download-windows-10-enterprise>
diff --git a/debian.cfg b/debian.cfg
index 339f30d..4d527fe 100644
--- a/debian.cfg
+++ b/debian.cfg
@@ -123,7 +123,7 @@ d-i preseed/early_command string true; \
 # efi 分区大小未改变时，不会被格式化，因此需要手动删除旧系统的 efi 文件
 # os-prober 卡太久，因此跳过
 d-i partman/early_command string true; \
-    confhome="$(grep -o 'extra_confhome=[^ ]*' /proc/cmdline | cut -d= -f2)"; \
+    eval "$(grep -o 'extra_confhome=[^ ]*' /proc/cmdline | sed 's/^extra_//')"; \
 
     postinst=/var/lib/dpkg/info/bootstrap-base.postinst; \
     cp $postinst $postinst.orig; \
@@ -161,7 +161,7 @@ d-i partman/early_command string true; \
 # 另一种方法处理 cloudcone
 # if [ "$link_grub_dir" = 1 ]; then mkdir /target/boot/grub2; echo 'chainloader (hd0)+1' >/target/boot/grub2/grub.cfg; fi; \
 d-i preseed/late_command string true; \
-    link_grub_dir="$(grep -o 'extra_link_grub_dir=[^ ]*' /proc/cmdline | cut -d= -f2)"; \
+    eval "$(grep -o 'extra_link_grub_dir=[^ ]*' /proc/cmdline | sed 's/^extra_//')"; \
     if [ "$link_grub_dir" = 1 ]; then ln -s grub /target/boot/grub2; fi; \
 
     in-target systemctl enable ssh; \
diff --git a/get-xda.sh b/get-xda.sh
index 6da568d..7a55152 100644
--- a/get-xda.sh
+++ b/get-xda.sh
@@ -10,7 +10,7 @@ get_all_disks() {
 get_xda() {
     # 如果没找到 main_disk 或 xda
     # 返回假的值，防止意外地格式化全部盘
-    main_disk="$(grep -o 'extra_main_disk=[^ ]*' /proc/cmdline | cut -d= -f2)"
+    eval "$(grep -o 'extra_main_disk=[^ ]*' /proc/cmdline | sed 's/^extra_//')"
 
     if [ -z "$main_disk" ]; then
         echo 'MAIN_DISK_NOT_FOUND'