ATATool - Windows ATA Disk Info and HPA/DCO Utility
ATATool is only available to professional
users such digital forensic practitioners, law enforcement, security researchers and similar.
It is no longer available for personal download. If you would like to use ATATool please Contact Us
to request access.
Please note that personal requests, anonymous requests and those from disposable email addresses will be ignored
Data Synergy ATATool can be used to display and modify ATA disk information from a Microsoft Windows environment.
We believe this is a unique capability for a freely available tool. The principal use of ATATool is to check/modify the
ATA 'Host Protected Area (HPA)' and 'Device Configuration Overlay (DCO)' features. It can also be used to simulate 'bad'
sectors by corrupting disk ECC data.
Current features include:
- List attached ATA devices (both legacy PATA and SATA)
- Display device information including model/serial number, HPA and DCO status
- Modify and reset HPA device status (SETHPA command)
- Modify and reset DCO device status (SETDCO command)
- Corrupt and fix disk ECC data (BADECC command)
- Force Windows device re-detect following HPA status change
- Runs inside a Windows environment (including Windows PE)
ATATool has the following requirements:
- Windows XP SP2 or later (32-bit or 64-bit) including Windows PE
- Administrator rights (elevated on Windows Vista and later)
ATATool is command-line tool. It is supplied as a single EXE file and requires no external dependencies to function.
ATATOOL action [options] [device]
The command-line syntax is:
Where action may be:
/LIST - List all detected ATA devices (default)
/INFO - Display summary ATA information for device
/DETAIL - Display detailed ATA information for device
/SETHPA:sectors[MB][GB][TB] - Set maximum number of sectors or capacity (HPA)
/RESETHPA - Restore default device maximum capacity (HPA)
/SETDCO:sectors[MB][GB][TB] - Set maximum number of sectors or capacity (DCO)
/RESTOREDCO - Restore default device maximum capacity (DCO)
/FREEZELOCKDCO - Lock DCO until next hardware reset / power-off (DCO)
/ADVANCED - Display further advanced syntax
/NOREDETECT - Disable device re-detection for /SETHPA and /RESETHPA
This option should be used with extreme caution as
system may be unstable after reducing drive size
/NONVOLATILEHPA - /SETHPA and /RESETHPA changes are permanent
Default is for changes to be discarded on power-off
Numeric values may be decimal or hexadecimal. Prefix hexadecimal with '0x'
ATATOOL /INFO \\.\PhysicalDrive1
ATATOOL /DETAIL \\.\PhysicalDrive2
ATATOOL /SETHPA:1000MB \\.\PhysicalDrive2
ATATOOL /SETHPA:0x123456 \\.\PhysicalDrive3
ATATOOL /RESETHPA /NONVOLATILEHPA \\.\PhysicalDrive3
This software can be used to permanently modify the configuration (including size) of a device.
This may prevent access to data that was previously accessible and may result in permanent data loss.
This tool should be used with great care and Data Synergy accepts no liability for any loss resulting from the use of this software.