How to make Safe mode appear in your system menu:
Open the Boot.ini file in the C-packing directory, which is a hidden system file, and if you do not see it, you need to open the Folder Options window and cancel the "Hide protected operating system files" item in the "View" tab, and select the "Show All Files and folders" command. or enter "C:boot.ini" (without outside quotes) directly in the address bar of the browser, and you can also open it after a carriage return.
After the file is opened, the multi (0) disk (0) rdisk (0) partition (1) windows= "Microsoft XP Professional" under "Operating Systems"/noexecute= Optin/fastdetect
"Content to another line, copy and paste a copy, and then change the = after the contents of the quotation mark to" XP security mode ", the other content remains unchanged, save the modified file.
Finally, open the Run window, enter "msconfig" and then open the System Configuration Utility and switch to BOOT. INI tab, select the line we just modified in the content area, and select the "/safeboot (F)" Item in the "Startup Options" section below, and modify the "timeout" length as needed, by default 30 seconds, that is, the boot menu can stay for 30 seconds for users to choose from.
After such modifications, two boot menus are displayed during system startup, and "Microsoft XP Professional" is started normally, and "XP security Mode" is selected to enter Safe mode.