CN104102886A - EFI BIOS power-on password clearing method - Google Patents
EFI BIOS power-on password clearing method Download PDFInfo
- Publication number
- CN104102886A CN104102886A CN201410324291.XA CN201410324291A CN104102886A CN 104102886 A CN104102886 A CN 104102886A CN 201410324291 A CN201410324291 A CN 201410324291A CN 104102886 A CN104102886 A CN 104102886A
- Authority
- CN
- China
- Prior art keywords
- password
- clear command
- bios
- user
- clearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/57—Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
- G06F21/572—Secure firmware programming, e.g. of basic input output system [BIOS]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Stored Programmes (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses an EFI BIOS power-on password clearing method. The method includes using an unused section in ECFLASH, and saving a clearing command through the front bytes; writing an interface function in the interrupt position of an LPCPM 1, and receiving data transmitted by WINDOWS clearing command software; in EFIBIOS, after detecting administrator password and user password, adding the function of detecting the clearing command; when the power-on password is required to clear, allowing a user to input the clearing command to implement zero clearing and inter the BIOS interface. The method is capable of clearing the original password without influencing other BIOS menu options; the original password can be cleared by inputting the clearing command, the method is simple and easy to use, the working efficiency is improved effectively, and cost is reduced.
Description
Technical field
The present invention relates to computer encipher technical field, specifically a kind of method of removing EFI BIOS startup password.
Background technology
EFI is the abbreviation of English Extensible Firmware Interface, is translated as Extensible Firmware Interface, is a kind of standard of describing style interface in detail.EFI is the interface model between operating system and platform firmware.EFI, is loaded in a kind of operating system automatically from the operating environment of pretrigger for operating system, for program before starting an operating system and carrying out startup provides a standard environment.BIOS is the abbreviation of English " Basic Input Output System ", and literally rear Chinese is exactly " Basic Input or Output System (BIOS) ".In fact, it is one group and is cured in computing machine the program on a rom chip on mainboard, self-check program and system self-triggered program after the program of the most important basic input and output of its in store computing machine, system configuration information, start.Its major function provides the bottom, the most direct hardware setting and control for computing machine.BIOS setup menu provides the man-machine graphical interfaces that the configuration information of system is arranged.
LPC is the abbreviation of English " Low Pin Count ", literally after Chinese be exactly " interface ", one replaces a kind of new interface specification of conventional I SA BUS, and mode to open for free and to authorize, for industry employing.
EC is the abbreviation of English " Embedded Controller ", and literally rear Chinese is exactly " embedded controller ", in one group of particular system, increases fixed position newly, and the control device that completes certain task is just called embedded controller.
User, in computed process, focuses on security very much.In BIOS, have two menu options of administrator password and user password, user can pass through these two options, allows other people except own cannot enter computer BIOS interface and operating system.
After Administrator password is set up, enter again BIOS interface next time, must input this password and just can enter.After User password is set up, before next BIOS load operation system, can point out user to input this password just can load operation system.
No matter administrator password or user is password, once after being arranged by user.If forgotten, can only remove password, otherwise cannot re-use corresponding function.Want to remove the password arranging, under EFI BIOS, pull out button cell one method after only taking cabinet power-off apart.
But this method, has two drawbacks: 1, and except removing password, other BIOS menu also can recover default value.2, open cabinet power-off and pull out button cell, for many unprofessional people, be a complicated job.
Summary of the invention
Technical assignment of the present invention is to provide a kind of method of the EFI of removing BIOS startup password.
Technical assignment of the present invention is realized in the following manner, and the method step of this removing password is as follows:
In EC FLASH, use a not sector for use, use several bytes above to preserve clear commands; In LPC PM1 interruptions, write an interface function simultaneously, receive the data that WINDOWS clear command software transmits; In EFI BIOS, after checking administrator password and user password, add the function that checks clear command; In the time that needs are removed startup password, user inputs clear command, just, by clear 0 to administrator password and user password, then enters BIOS interface.
Described clear command is clear command or the user-defined clear command of acquiescence.
When described clear command need to be changed, operating software under WINDOWS, according to software prompt, imports new clear command into EC by LPC; EC can receive data according to interface function, simultaneously according to SPI agreement, the sector of preserving clear command is removed, and then new clear command is written to this sector.
Compared to the prior art, the method can be by original clearing password, and does not affect other BIOS menu options for a kind of method of removing EFI BIOS startup password of the present invention.In original BIOS password typing window, input clear command can be removed original password, and the method is simple to operate easy-to-use, effectively raises work efficiency, has reduced cost.
Brief description of the drawings
Accompanying drawing 1 is the process flow diagram of BIOS inspection password.
The self-defined setting process figure that accompanying drawing 2 is clear command.
Embodiment
Embodiment 1:
1), in EC Flash, find out first sector exceeding behind 64K space; Several bytes are as clear command, taking 0 as end mark above;
2) in system bios start-up course, read clear command by LPC, be then put in the string variable of a Wide string type;
3) user inputs after Password, compare with Administrator password and user password, if not coupling, compare with acquiescence clear command, if mated with clear command, remove Administrator password and user password, then enter BIOS setup interface.
Embodiment 2:
1), in EC Flash, find out first sector exceeding behind 64K space; Several bytes are as clear command, taking 0 as end mark above;
2) in system bios start-up course, read clear command by LPC, be then put in the string variable of a Wide string type;
3) when user need to use self-defined clear order, operating software under WINDOWS, according to software prompt, import self-defining clear command into EC by LPC, EC can receive data according to interface function, according to SPI agreement, first sector after the 64KROM of FLASH is removed simultaneously, then self-defining clear command is written to the first few bytes of this sector.
4) user inputs after Password, compare with Administrator password and user password, if not coupling, compare with self-defining clear command, if mated with clear command, remove Administrator password and user password, then enter BIOS setup interface.
By embodiment above, described those skilled in the art can be easy to realize the present invention.But should be appreciated that the present invention is not limited to above-mentioned several embodiments.On the basis of disclosed embodiment, described those skilled in the art can the different technical characterictic of combination in any, thereby realizes different technical schemes.
Claims (3)
1. a method of removing EFI BIOS startup password, is characterized in that, the method step of this removing password is as follows:
In EC FLASH, use a not sector for use, use several bytes above to preserve clear commands; In LPC PM1 interruptions, write an interface function simultaneously, receive the data that WINDOWS clear command software transmits; In EFI BIOS, after checking administrator password and user password, add the function that checks clear command; In the time that needs are removed startup password, user inputs clear command, just, by clear 0 to administrator password and user password, then enters BIOS interface.
2. a kind of method of removing EFI BIOS startup password according to claim 1, is characterized in that, described clear command is clear command or the user-defined clear command of acquiescence.
3. a kind of method of removing EFI BIOS startup password according to claim 1, is characterized in that, when described clear command need to be changed, operating software under WINDOWS, according to software prompt, imports new clear command into EC by LPC; EC can receive data according to interface function, simultaneously according to SPI agreement, the sector of preserving clear command is removed, and then new clear command is written to this sector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324291.XA CN104102886A (en) | 2014-07-09 | 2014-07-09 | EFI BIOS power-on password clearing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324291.XA CN104102886A (en) | 2014-07-09 | 2014-07-09 | EFI BIOS power-on password clearing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104102886A true CN104102886A (en) | 2014-10-15 |
Family
ID=51671029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410324291.XA Pending CN104102886A (en) | 2014-07-09 | 2014-07-09 | EFI BIOS power-on password clearing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104102886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114491547A (en) * | 2021-12-23 | 2022-05-13 | 浪潮(山东)计算机科技有限公司 | Method, device and system for clearing BIOS (basic input output System) password |
-
2014
- 2014-07-09 CN CN201410324291.XA patent/CN104102886A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114491547A (en) * | 2021-12-23 | 2022-05-13 | 浪潮(山东)计算机科技有限公司 | Method, device and system for clearing BIOS (basic input output System) password |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103412769B (en) | External card parameter configuration, equipment and system | |
| WO2019033779A1 (en) | Method and device for waking up computer from sleep state | |
| CN104375855A (en) | Device and method for upgrading firmware through storage devices on basis of multiple vehicle-mounted MCUs | |
| CN104216753A (en) | Method for rapidly starting application program for terminal, and terminal | |
| CN203324968U (en) | Device for updating system firmware or parameters and computer system thereof | |
| CN103593622A (en) | FPGA-based design method of safe and trusted computer | |
| WO2024022355A1 (en) | Security vulnerability scanning task processing method based on rpa and ai, and related device | |
| US20160041607A1 (en) | System management controller | |
| US8484447B2 (en) | Selecting a compatible processor to control a peripheral component interconnect express (PCI-E) slot unit within a predetermined interval via a setting menu | |
| TWI526934B (en) | Method, apparatus, and computer program product for booting an information handling system | |
| CN102999335A (en) | Method for clearing Android system passwords | |
| US20100191945A1 (en) | Portable device with user interface | |
| CN105094880A (en) | USB driving method, computer and compound equipment | |
| CN103020502A (en) | Computer power-on system based on basic input/output system (BIOS) | |
| CN104102886A (en) | EFI BIOS power-on password clearing method | |
| CN108829490A (en) | A kind of method of cloud platform resetting KVM virtualization platform Linux virtual machine password | |
| CN107077343B (en) | Ignoring input in wake-on-LAN boot | |
| JP5489278B2 (en) | Information processing apparatus and activation method thereof | |
| WO2017117854A1 (en) | Method for providing pcie card configuration capacity in openpower cpu architecture server boot | |
| CN104182185A (en) | NFC (near field communication) parameter setting method for photoelectric arc optical protection system | |
| CN103902298A (en) | Instruction set firmware recovery state information setting method and device | |
| CN104636658A (en) | Information processing method and electronic device | |
| CN108170474A (en) | A kind of method for identifying particular server mainboard | |
| CN104348514B (en) | Integrated circuit, electronic device and operation method thereof | |
| CN109788459A (en) | Wireless remote control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141015 |
|
| WD01 | Invention patent application deemed withdrawn after publication |