Kosherload693

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CmosPwd decrypts password stored in cmos used to access BIOS SETUP.
Works with the following BIOSes

• ACER/IBM BIOS
• AMI BIOS
• AMI WinBIOS 2.5
• Award 4.5x/4.6x/6.0
• Compaq (1992)
• Compaq (New version)
• IBM (PS/2, Activa, Thinkpad)
• Packard Bell
• Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
• Phoenix 4 release 6 (User)
• Gateway Solo - Phoenix 4.0 release 6
• Toshiba
• Zenith AMI

With CmosPwd, you can also backup, restore and erase/kill cmos.

CmosPwd Download

CmosPwd is free, it's distributed under GPL

Cmos password recovery tools 5.0

• DOS/Windows 9x and Windows NT/W2K/XP/2003/... versions, zip
• Source only tar.bz2

CmosPwd works and compiles under

• Dos-Win9x
• Windows NT/W2K/XP/2003/...
• Linux
• FreeBSD and NetBSD

CmosPwd Development

To get information about new CmosPwd release or development, subscribe to cmospwd.

Hints for various manufacturers

Unlock code generator

Check http://dogber1.blogspot.com/2009/05/table-of-reverse-engineered-bios.htmlit contains programs to unlock some

• Compaq
• Dell
• Fujitsu-Siemens
• Hewlett-Packard
• Insyde H20
• Phoenix
• Sony
• Samsung

EEPROM on laptops

On laptops, the password is usually stored in an eeprom on the motherboard and not in the cmos. You need an eeprom programmer/eeprom reader (electronic device) to retrieve the password.If you erase the cmos (ie. cmospwd /k) and if the password is really stored in an eeprom, you won't be able to boot anymore.

You can get/buy eeprom programmer in electronic shops or labs, you need another PC to use it.You can desolder the eeprom with hot air or you can try to 'clip' the eeprom. With the eeprom programmer, backup your eeprom and run cmospwd /d /l eeprom_backup. If you don't see the password, you can tryto fill the eeprom with zero or FF, don't forget the reset the cmos.

Acer

• Acer 630: eeprom 93c56 ?
• Acer Aspire 1522: Under the keyboard, search for switch SW1 on the left of the fan jack, switch the pin 1 to on, turn on the notebook, press F2 and set a new supervisor password, turn off and switch back SW1.
• Acer Travelmate 280: search for SW1 switch on the motherboard and enable the switch 3 to disable the password request.
• Acer Travelmate 6592g: Disconnect the yellow cmos battery (near the DVD bay but hard to access) and reconnect it after a few hours , hold F2 during first boot.

Award BIOS

Hdd Pw Exe Dosyasını 3

• AWARD 4.50 have a backdoor, a generic password : AWARD_SW
• SOYO motherboard have 'SY_MB' as master password for Award 4.51.
• CmosPwd give equivalent passwords for Award BIOS, not original one.

Dell

The official method is to contact Dell Technical Support. Dell Technical Support will request the Service Tag and Express Service Code from the bottom of the Latitude. If the current user is not the original Latitude owner, Dell will transfer the used Latitude’s registration from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.

• Dell Inspiron 5100: eeprom 93lc46, password in scan code at 0x310
• Dell Inspiron 7500: eeprom 24c164
• Dell Inspiron 8100: eeprom 24c02
• Dell Latitude C600: eeprom 24c02, password in scan code at 0x00, 0x10 and 0x90
• Dell Latitude C610: eeprom 24c02, password in scan code at 0x00, 0x10, 0x80 and 0x90
• Dell Latitude C640: eeprom 24c04, password in scan code at 0x100 and 0x180
• Dell Latitude CPI: eeprom 24c02, password in scan code at 0x00, 0x10, 0x80
• Dell D600: eeprom 24c04, password in scan code at 0x110
• Dell Optiplex: Remove the PSWD jumper
• For most Dell Dimension desktops, the steps to reset a BIOS password and clear all CMOS settings are:
  • Locate the 3-pin CMOS password reset jumper on the system board.
  • Remove the jumper plug from pins 1 and 2.
  • Place the jumper plug on pins 2 and 3 and wait approximately 5 seconds.
  • Replace the jumper plug on pins 1 and 2.

HP / Compaq

• Compaq M700: eeprom 24C02
• HP NX9010 24C02
• HP Omnibook 900,2100,4150,7150: eeprom AT24c164, 0x6D-0x7F area, unknow algo

put a 00 at 0x7F to clear admin password

• HP Omnibook 6000: eeprom 24c08 or 24c164 0x50-0xBF area (maybe 0x50-0x6F only), unknow algo
• HP Omnibook 6100: eeprom 24c08
• HP Omnibook XE3: eeprom 24c16
• HP Omnibook 770x: eeprom 24c01
• HP Pavilion ze4455ea: eeprom 24c08

IBM

• IBM Thinkpad X20: eeprom 24RFC08CN, password in scan code at 0x338
• IBM TP 240: eeprom ?, password in scan code at 0x338.
• IBM TP 380Z: eeprom 24c01, password in scan code at 0x38 and 0x40
• IBM TP 390: eeprom 24c03 (be carrefull, there are two eeprom)
• IBM TP 560X: eeprom 24c01, password in scan code at 0x38 and 0x40
• IBM TP 570: eeprom ?, password in scan code at 0x338 and 0x3B8.
• IBM TP 750C,755CX,760C,765D: eeprom 93c46, password in scan code at 0x38 and 0x40

OKI M811b may be written on the chip. Search near pcmcia slot or adjacent the floppy connector on the top side of the board

• IBM TP 770: eeprom 24c01
• IBM TP 600E, T21, T23: 14 PIN 24RF08
• IBM TP T20,X20,X30: 24RF08, password in scan code at 0x338 and 0x340

Sony

• Sony pcg-fx950: eeprom 93c46 ?
• VAIO 641: eeprom 24c02 write zero at 0x0

Be careful, there are two eeprom you must unsolder one to the pci controller it is in the down side of the board

• VAIO 8851: eeprom 24c02 (ic 903) write zero at address 0x0, the down side of the board
• VAIO srx 87: eeprom 2408 write zero at 0x0. The ic is behind the modem in the top side of the board
• VAIO PCG-FX150, eeprom 24c04 near the reference IC1103
• VAIO PCG-GRX560, eeprom 24c04 near the reference IC1001
• VAIO PCG-FR415S, 'cmospwd /k' removes the password.

Toshiba

• To reset the password of a very old Toshiba, you can use KeyDisk.
• If the keydisk doesn't work, you can try to build the Toshiba Parallel loopback.

To make a simple device that you connect to your parallel port, a lot of Toshiba computers remove the password when you boot it up. The device, named 'loopback' by some, could be made out of any parallell wire with 25pins connectors (db25). You should connect these pins: 1-5-10, 2-11, 3-17, 4-12, 6-16, 7-13, 8-14, 9-15, 18-25

• Toshiba 74600C: eeprom 93c56
• Toshiba Satellite A100: The BIOS password can be removed by erasing the cmos content with cmospwd /k.

Links

What does CHKDSK /F /R do? How to use CHKDSK to repair the hard drive errors on Windows 10/8/7? Here is the full guide.

What Is CHKDSK Command

CHKDSK, also known as Microsoft Check Disk, is a utility that can be used in almost all Windows versions. The CHKDSK command is used to scan through your entire hard drive to find and fix any errors. For example, when your computer freezes, you cannot access a certain disk due to a corrupted file system, then you can use the CHKDSK commands to check and fix the drive errors.

What Does CHKDSK /F /R /X Mean

What is CHKDSK /F /R /X? The primary function of CHKDSK /F /R /X is to scan the integrity of the file system and file system metadata on a disk volume and fix any logical file system errors that it finds. Besides, CHKDSK also can be used for detecting bad sectors on the target disk that occur because of physical damage. Then, it automatically fixes these errors as well.

Differences Among CHKDSK /F, CHKDSK /R, and CHKDSK /X

CHKDSK can fix two types of disk errors: logical errors and physical errors. Based on the disk error types, you can use the different CHKDSK commands and switches to fix hard drive errors. CHKDSK /F, CHKDSK /R, and CHKDSK /X are the most commonly used CHKDSK commands. What is the difference between CHKDSK /F /R X?

• CHKDSK /F: Check for disk errors, not bad sectors.
• CHKDSK /R: Locate the bad sectors on the target hard disk and try to recover the readable information from the bad sectors (implies /F).
• CHKDSK /X: Forces the volume to dismount first, if necessary. It also includes the functionality of /f.

CHKDSK Parameters and Meanings

The syntax of the CHKDSK command is:

chkdsk volume /f /v /r /x /i /c

If used without parameters, CHKDSK displays only the volume's status and does not fix any errors. If used with the /f, /r, /x, or /b parameters, it fixes errors on the volume. What do the parameters ( /f /r /x... ) mean? Here are some common CHKDSK parameters and their meanings:

Run EaseUS Partition Tool to Fix and Repair Disk Errors in 1-Click

If you are not so tech-savvy and know little about computer, we highly recommend you try a professional disk management tool to fix hard drive errors instead of using CMD and type the commands manually.

EaseUS Partition Master is a full-featured disk partitioning utility that enables you to manage primary and advanced partitions and maximize disk capacity usage.

EaseUS partition tool makes it effortless to repair disk errors. Follow the steps to check and repair your file system error:

Step 1. Open EaseUS Partition Master on your computer. Then, locate the disk, right-click the partition you want to check, and choose 'Advaned' > 'Check File System'.

Step 2. In the Check File System window, keep the 'Try to fix errors if found' option selected and click 'Start'.

Step 3. The software will begin checking your partition file system on your disk. When it complets, click 'Finish'.

How to Use CHKDSK /F /R /X Commands Manually on Windows 10/8/7

If you don't like to use the simple third-party CHKDSK tool, you can run CHKDSK in a harder way via 3 methods: using Command prompt, Windows PowerShell, and disk check tool.

1. Run CHKDSK in Command Prompt

Whenever you find your hard drive performs poorly or Windows asks you to repair drive errors, you can try to run CHKDSK to do the job. Here's how to run CHKDSK /f in Windows 10, 8.1, 8, 7.

Use CHKDSK /F /R in Windows 10

Note: If you can't boot into Windows 10 to run CHKDSK, fix the UEFI boot issue in Windows 10 with 5+ solutions.

Step 1. Press the Windows key and type cmd.

Step 2. Right-click 'Command Prompt' and choose 'Run as administrator'.

Step 3. Enter the following command and press Enter: chkdsk E: /f /r /x. 'E' means the drive letter of the partition you want to repair.

Hdd Pw Exe Dosyasını Full

Do not interrupt CHKDSK and wait patiently for the process to end.

Run CHKDSK in Windows 8.1/8

To run the utility from Command Prompt for Windows 8.1/8 users, here are the instructions:

Step 1. Press the Windows and C key to open the Charm bar.

Step 2. Select 'Search' and type cmd.

Step 3. Right-click on 'Command Prompt' and click 'Run as administrator.'

Step 4. When Command Prompt launches, type the command below and press 'Enter': chkdsk E: /f /r /x.

Run CHKDSK in Windows 7 CMD

If you are a Windows 7 user, you can run the CHKDSK command by the following steps:

Step 1. Click 'Start'. Type cmd at the search box.

Step 2. Right-click on cmd.exe and click 'Run as Administrator'. Enter your Administrator password if necessary.

Step 3. When cmd.exe opens, type the command below and press 'Enter': chkdsk c /f /r.

If you receive the 'Chkdsk cannot run because the volume is in use by another process.' message, type Y to restart the computer and let the utility to run a scan at the next boot of your PC.

2. Use CHKDSK/F/R in Windows PowerShell

If the Command Prompt not working in Windows 10, you can also run the CHKDSK /F or /R command in Windows PowerShell to fix hard drive errors.

Step 1. Click the Search button and type PowerShell.

Step 2. Right-click the PowerShell and choose Run as administrator.

Step 3. Type chkdsk c /f /r to start fixing disk error. Replace C with the drive letter of the target disk.

3. Run CHKDSK in Properties Window

Running the Check Disk tool from the Windows desktop is easy. Follow the steps below to run CHKDSK in Windows 10. It works the same way on Windows 8 and Windows 7.

Step 1. Open This PC in File Explorer > right-click the HDD/SSD you want to scan > choose 'Properties'.

Step 2. Under the Tools tab > click the 'Check' button under the Error-checking section.

Step 3. Next, you can choose to Scan drive if wanted or Repair drive if errors were found.

Step 4. When the scanning finishes, click on the Show Details link to see the CHKDSK log in Event Viewer.

Conclusion

Any time you have hard drive errors or corrupted files, the CHKDSK can be a lifesaver. You can use the disk error checker that comes with every Windows version with the full guide above.

Or you can use the ultimate disk management tool - EaseUS Partition Master to repair organize your hard drive to enhance system performance easily.

CHKDSK /F /R Error TroubleShooting

You may encounter CHKDSK related problems; what to do then? Here are the common issues of CHKDSK errors; read on to figure out the solutions.

Is CHKDSK R safe?

It's safe to run the CHKDSK /R command under normal circumstances as long as you're using the syntax properly. There are different parameters with CHKDSK; you can check the CHKDSK parameters and choose the one that suits your problem to fix disk errors.

How long does chkdsk /f /r take?

It depends.

• chkdsk -f should take under an hour on that hard drive.
• chkdsk -r will take some time. It could take over an hour, maybe two, three, or more, depending on your partitioning.

You can interrupt the scan, but not recommended. Canceling or interrupting CHKDSK should not leave the volume any more corrupt than it was before CHKDSK was run. You can start it again, and it will check and repair any remaining corruption on the volume.

What to do when CHKDSK is stuck or frozen?

• Restart your computer.
• Press Esc or Enter to stop chkdsk from running.
• Run the Disk Cleanup utility to clear out junk files.
• Open an elevated CMD, type sfc /scannow, and press Enter to run the System File Checker.
• Restart and exit chkdsk again during the startup by pressing Esc or Enter.
• Open CMD as admin, type Dism /Online /Cleanup-Image /RestoreHealth, and press Enter to repair the Windows image.
• Run CHKDSK again.

The scan should be able to run to completion this time.