AIX enters single-user mode

In single-user mode, AIX resets the password when the password of the root user is lost. This is troublesome and requires you to restart the machine. For security, the password of the root user must be properly configured and kept. Step 1 of www.2cto.com: Prepare the boot AIX installation disc that is consistent with the current AIX system version and level of the machine, install the tape media or local backup tape, and insert the disc or tape into the corresponding drive, restart the system. Step 2: Make sure that the boot device of the machine is changed to a CD or tape. When an icon or beep occurs on the console screen, repeat the F1 key until the System Management Service (SMS) menu appears, and then follow the on-screen menu prompts for operations. Step 3: confirm that the console uses the F1 key and then press Enter to set the current terminal as the system console. Step 4: select the prompt language during installation. Select 1, press Enter, and select English as the prompt language. Step 5: This step is critical. Do not make any mistakes. The screen at www.2cto.com shows: Welcome to Base Operating System Installation and Maintenance1. Start install Now With Default Setting2. Change/Show Installation Settings and Install3. Start Maintenance Mode for System Recovery must be set to "3. start Maintenance Mode for System Recovery "Step 6: There are four options on the Maintenance interface: 1. access a Root Volume Group2. Copy a System Dumo to Removeable Media3. Access Advanced Maintenance Function4. Install From a System Backup should select "1. Access a Root Volume Group" Step 7: display the warning information on the next screen and select "0 Continue ". Step 8 of www.2cto.com: Select VG. Press the VG number and then press Enter. Step 9: Select how to access rootvg. Two options are displayed on the screen: 1. access this volume group and start a shell2. Access this volume group and start a shell before mounting filesystems should select "1. access this volume group and start a shell ". Step 10: a command prompt appears. Run the passwd command to reset the password of the root user. Step 2: restart the system again. Run the following command: sync; reboot