View source for Hdt (Hardware Detection Tool)

<!-- Keywords hdt Hdt HDT Hardware Detection Tool -->

<!-- '''[http://www.hdt-project.org THE PROJECT HAS ITS OWN WEBSITE NOW!]''' -->
The project used to have its own website, 
[https://web.archive.org/web/20160110082130/http://hdt-project.org/ now archived].

'''This document might be partially outdated.'''

<!-- Insert Horizontal Line: -->
----

[[Category:Release Documentation]]
[[Category:Comboot]]
[[Category:Modules]]
== What is HDT ? ==
HDT (for "'''H'''ardware '''D'''etection '''T'''ool") is a Syslinux com32 
module designed to display low-level information for any x86 compatible system.

HDT can inspect multiple subsystems:

* CPU (via cpuid)
* PCI
* DMI
** Memory modules
** BIOS
** Motherboard
** IPMI base board
** Chassis
** Batteries
** CPU
* Disks (work in progress)
* Syslinux
* Linux Kernel modules needed by this host
* PXE environment
* VESA
* ...

== Release ==
Current stable release is <s>0.3.3</s> 0.5.2.

Current development version is <s>0.3.4</s> in the main Syslinux git repository.

== Download ==
<!-- The following links used to be posted in the wiki page. -->
<!-- The following links are dead, -->
<!-- and the specified versions are no longer relevant / up-to-date. -->
<!-- -->
<!-- [http://konilope.linuxeries.org/hdt/hdt_0_3_3.c32 HDT 0.3.3] for Syslinux 3.75 -->
<!-- -->
<!-- [http://konilope.linuxeries.org/hdt/hdt_0_3_2.c32 HDT 0.3.2] for Syslinux 3.75 -->
<!-- -->
<!-- [http://konilope.linuxeries.org/hdt/hdt_0_3_1.c32 HDT 0.3.1] for Syslinux 3.75 -->
<!-- -->
<!-- Additionally, for potential historic or tracking relevance: -->
<!-- https://web.archive.org/web/20100331203655/http://konilope.linuxeries.org:80/hdt/ -->
<!-- -->

HDT is included in the official Syslinux distribution [[Download|archives]].

== History ==
Syslinux 3.74 features HDT 0.2.7.

Syslinux 3.75 features HDT 0.2.7 with a 
[http://git.kernel.org/?p=boot/syslinux/syslinux.git;a=commit;h=c0e760fdb7ce04a67f0c7f47535eb710bc5a6e7f fix] 
to prevent hard lock during pci detection.

== Projects known to use HDT ==

* Mandriva Linux since 2009.1 (no longer active since 2015)
* [http://www.ultimatebootcd.com/ Ultimate Boot CD] since version 5.0
* Parted Magic since 0.4.0
* Recovery Is Possible since 8.0 (no longer active since 2012)
* Many others

== How can I try HDT ? ==
Since Syslinux 3.74, HDT is available in the Syslinux archive under the "com32/hdt" directory.

HDT is a com32 module that requires syslinux 3.74 or later. 
As every com32 module, it can be booted as a kernel like:

 LABEL hdt
  KERNEL hdt.c32

=== Testing using kvm/qemu ===

Since qemu 0.9.0, it is possible to boot a virtual machine while using a local directory as a local pxe server. 
This allows a local PXE booting without needing a complete infrastructure (dhcp/tftp).

* Install kvm/qemu.
* Setup you environment by creating a local pxe directory like "<tt>~/pxe</tt>".
* In this pxe dir, create another directory, named "<tt>pxelinux.cfg</tt>".
* Within the "<tt>pxelinux.cfg</tt>" directory, create the following configuration file named "<tt>default</tt>":
 DEFAULT hdt
 PROMPT 1
 TIMEOUT 5
 LABEL hdt
  KERNEL hdt.c32
* Copy the "<tt>pxelinux.0</tt>" (and "<tt>ldlinux.c32</tt>") file(s) from <!--
--> the Syslinux archive to the "<tt>~/pxe</tt>" dir.
* Copy the hdt.c32 file (and the relevant [[library modules]]) in the same directory.
* Create a dummy disk file with 
 dd if=/dev/zero of=~/pxe/dummy.img bs=1M count=5
* Start qemu/kvm to use that local configuration:
 kvm -hda ~/pxe/dummy.img -net nic -net user -boot n -tftp ~/pxe -bootp /pxelinux.0


== Menu mode ==
The menu mode will try to do some best effort to manage 
the little space in which we display so much information.

Screenshots taken on HDT 0.2.6.

''Main menu:''

[[Image:hdt-menu.png]]

''Cpu mode:'' 

[[Image:hdt-menu-cpu.png]]

=== Starting memtest ===
Under the memory menu, it is possible to start memtest. 
To make it successful, you have to:

* Download memtest
* gunzip it
* Setup in your current Syslinux configuration file an entry like

 LABEL memtest
  LINUX memtest86+-2.11.bin

'''Make sure to use the keyword "<u>LINUX</u>", not "KERNEL"!'''

Then, when selecting the memory test from the memory submenu, the "<tt>memtest</tt>" label will be launched.

The label name could be changed using the "<code>memtest=<label></code>" boot option of HDT. 
The default value is set to "<tt>memtest</tt>".


== How do I configure HDT ? ==
HDT can be configured by APPENDing parameters, 
as described in the following sections.

=== pci stuff ===
HDT requires very little configuration. 
To improve the PCI reporting, copy "<tt>pci.ids</tt>" and "<tt>modules.pcimap</tt>" in a directory.
By default, hdt will search for these files in the root dir of the boot device. 
If you want to override the directory you can use the following parameters:

* modules=your_path/modules.pcimap
* pciids=your_path/pci.ids
* memtest=label_name

This can be configured as:
 LABEL hdt
  KERNEL hdt.c32
  APPEND modules=images/modules.pcimap pciids=images/pci.ids memtest=mymemtest

The "<tt>pci.ids</tt>" file can usually be found in the "<tt>/usr/share/</tt>" directory of 
a Linux System or just [http://pciids.sourceforge.net/v2.2/pci.ids download] it from sf.net.

The "<tt>modules.pcimap</tt>" file is usually available in the "<code>/lib/modules/`uname -r`/</code>" directory of your Linux system. 
<!-- (The following link is no longer available / relevant). -->
<!-- If you don't have one, you can try with [http://konilope.linuxeries.org/tmp/modules.pcimap this one] -->
<!-- taken from Mandriva Linux 2009 for a 2.6.27.7-server-1mnb Linux Kernel. -->

'''Warning!''' When HDT is used with ISOLINUX, the file name must be in an "8.3" format. 
So if your file is named "<tt>modules.pcimap</tt>", 
then the parameter given to HDT must be: "<code>modules=path/to/modules.pci</code>".

If these files are not available, HDT will generate some information messages to warn the user.

The <code>memtest=<label></code> option allows users to override the default entry name in the current config file of Syslinux. 
The default value is set to "<tt>memtest</tt>".

=== CLI mode ===

HDT supports two modes: a menu system and a CLI (command line interface). 
The menu system is enabled by default.
To enable the CLI mode, just append "<tt>nomenu</tt>" at startup time like in:

 LABEL hdt
  KERNEL hdt.c32
  APPEND nomenu


== Syntax of the CLI ==
This syntax may change in the future.

The main menu displays a "<tt>hdt>&nbsp;</tt>" prompt indicating the top menu.

Other submenus exist: pci, dmi, cpu, kernel, pxe, syslinux. 
These topics will be discussed later.

The ''<tt>help</tt>'' command shows the available commands:

* clear  : obviously, clear the screen
* help   : this help ;o)
* show   : the command to display items
* pci    : to enter the PCI mode
* dmi    : to enter the DMI mode
* cpu    : to enter the CPU mode
* kernel : to enter the kernel mode
* syslinux : to enter the syslinux mode
* vesa   : to enter the vesa mode
* exit   : to return to the top menu

Note that it is possible to use "<tt>show</tt>" 
in order to obtain a summary of the given mode, like in:

  hdt> show pci
  PCI: 17 devices detected                   
  PCI: Resolving names
  PCI: Resolving class names
  PCI Resolving module names                
  PCI                                        
   NB Devices   : 17         
  hdt> 
   
or:

  hdt> show dmi     
  DMI Table version 2.3 found
  Available DMI modules: base_board bios chassis memory bank<bank_number> cpu system          
  hdt> 

The "<tt>show dmi</tt>" command will display the version of the DMI table and the available modules.

Other examples:

  hdt> show cpu                                              
  CPU                        
   Manufacturer :  Intel                     
   Product      :  Intel(R) Pentium(R) D CPU 3.00GHz                              
   Features     :  3000 MhZ : x86_64 64bits SMP
  hdt> 


  hdt> show pxe                              
  PXE                        
   PCI device no: 15         
   Manufacturer : Broadcom Corporation              
   Product      : NetXtreme BCM5721 Gigabit Ethernet PCI Express                  
   Addresses    : 192.168.3.8 @ 00:13:72:3b:ce:85
  hdt> 


  hdt> show syslinux 
  SYSLINUX                            
   Bootloader : PXElinux              
   Version    : PXELINUX 3.74 pre1-110-g37bfb1c
   Version    : 842      
   Max API    : 35     
   Copyright  : Copyright (C) 1994-2009 H. Peter Anvin                
  hdt> 


  hdt> show kernel                                  
  Kernel modules                                                                  
  (intel-rng | iTCO_wdt) # (piix | ata_piix) # i2c-i801 # tg3 # sisfb #
  hdt> 


  hdt> show vesa
  VESA
   Vesa version : 3.0
   Vendor       : XGI Technology, Inc.
   Product      : Volari Z7
   Product rev. : 1.02.04
   Software rev.: Y 
   Memory (KB)  : 16384                      
   Modes        : 32
  hdt> 


=== Summary ===
The "<tt>show summary</tt>" command reports a global summary of the current host:

  hdt>show summary
  CPU
   Manufacturer :  Intel
   Product      :  Intel(R) Pentium(R) D CPU 3.00GHz
   Features     :  3000 MhZ : x86_64 64bits SMP
  System
   Manufacturer : Dell Computer Corporation
   Product Name : PowerEdge 850
   Serial       : XXXXX
  Bios
   Version      : A02
   Release      : 10/12/2005
  Memory Banks
   bank 00      : 512 MB DDR2@533 MHz
   bank 01      : 512 MB DDR2@533 MHz
  PCI
   NB Devices   : 17
  PXE
   PCI device no: 15
   Manufacturer : Broadcom Corporation
   Product      : NetXtreme BCM5721 Gigabit Ethernet PCI Express
   Addresses    : 192.168.3.8 @ 00:13:72:3b:ce:85
  Kernel modules
  (intel-rng | iTCO_wdt) # (piix | ata_piix) # i2c-i801 # tg3 # sisfb #
  hdt> 


=== PCI mode ===
From the main menu, type "pci". The prompt changes to "<tt>pci>&nbsp;</tt>".
The available commands are:

==== show list ====

The "<tt>show list</tt>" command reports the available pci devices like in:
  pci> show list
  21 PCI devices detected
  01: Intel Corporation E7230/3000/3010 Memory Controller Hub
      # Host bridge               # Kmod: unknown
  
  02: Intel Corporation E7230/3000/3010 PCI Express Root Port
      # PCI bridge                # Kmod: unknown
  [....]
  12: Intel Corporation 82801G (ICH7 Family) IDE Controller
      # IDE interface             # Kmod: piix | ata_piix
  [....] 


The first numerical field (01, 02 or 12 in this example) represents 
the PCI device number followed by the vendor and product names.

The second line displays the device class and the associated kernel module. 
If no module matches this pci device, the kernel module (Kmod) is reported as ''unknown''. 
If the device matches one or more kernel modules, 
the ''Kmod'' field shows their name, ''piix'' or ''ata_piix'' in this example.

==== show device <number> ====
The "<tt>show device <number></tt>" command reports more detailed information on the selected pci device. 
Let's see a report for the PCI device number 12 from the previous example:

  pci> show device 12
  PCI Device 12
  Vendor Name   : Intel Corporation
  Product Name  : 82801G (ICH7 Family) IDE Controller
  Class Name    : IDE interface
  Kernel module : piix | ata_piix
  Vendor ID     : 8086
  Product ID    : 27df
  SubVendor ID  : 1028
  SubProduct ID : 01b6
  Class ID      : 01.01.8a
  Revision      : 01
  PCI Bus       : 00
  PCI Slot      : 31
  PCI Func      : 01
  pci> 
 
The output is pretty obvious, no need to say more about it except about the pxe stuff. 
If the current device has a running pxe rom, its pxe information will be displayed:

  Mac Address   : 00:13:72:3b:ce:85
  PXE           : Current boot device

If the device has a valid IRQ, an "<tt>IRQ:&nbsp;<irq></tt>" line is displayed.

==== show irq ====
HDT can show IRQs set to some PCI devices. 
Most PCI devices do not really have a legacy IRQ. 
Only valid IRQs (>0 & <255) are shown.

  pci>show irq
  17 PCI devices detected
   IRQ : product
   -------------
   11  : Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1
   05  : Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express
   03  : Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express
  pci> 

=== DMI mode ===
Inside the dmi mode, "<tt>show list</tt>" displays the available modules.

  dmi> show list
  Available DMI modules: base_board bios chassis memory bank<bank_number> cpu system  

Note that only available modules will be displayed by this command. 
If your system doesn't have a battery, the ''battery'' module will not be reported.

To display the content of each module, use {{nowrap|1="<tt>show <module></tt>":}}

  dmi> show system
  System
  Manufacturer : Dell Computer Corporation
  Product Name : PowerEdge 850
  Version      : Not Specified
  Serial       : XXXX
  UUID         : XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXX
  Wakeup Type  : Power Switch
  SKU Number   :
  Family       :
  dmi> 

Nothing more to say except about the memory module.

==== memory display ====
The "<tt>show memory</tt>" command will display the 
status of each memory bank reported by the DMI table.

  dmi> show memory
  Memory Banks
   bank 00      : 512 MB DDR2@533 MHz
   bank 01      : 512 MB DDR2@533 MHz
   bank 02      : Free DDR2@533 MHz
   bank 03      : Free DDR2@533 MHz
  dmi> 

As reported by the command, to have more details of a given memory bank, 
use {{nowrap|1="<tt>show bank<bank number></tt>".}}

  dmi> show bank1        
  Memory Bank 1          
  Form Factor  : DIMM        
  Type         : DDR2   
  Type Detail  : Synchronous
  Speed        : 533 MHz
  Size         : 512 MB 
  Device Set   : 1      
  Device Loc.  : DIMM1_B
  Bank Locator : Not Specified
  Total Width  : 72 bits
  Data Width   : 64 bits    
  Error        : Not Provided
  Vendor       : C100000000000000
  Serial       : XXXXXXX
  Asset Tag    : XXXXXXXXX
  Part Number  : XXXXXXXX
  dmi> 

==== IPMI base board display ====
Since 0.2.6, HDT can detect whether an IPMI BMC is present; 
if it is, it displays the interface type, the version and its address.

  dmi> show ipmi
  IPMI
   Interface Type     : KCS (Keyboard Control Style)
   Specification Ver. : 1.5
   I2C Slave Address  : 0x10
   Nv Storage Address : 0
   Base Address       : 0000000000000CA8
   IRQ                : 0
  dmi> 


=== CPU mode ===
Inside the CPU mode, use "<tt>show cpu</tt>" to display the cpu information:

  cpu> show cpu
  CPU 
  Vendor    : Intel
  Model     : Intel(R) Pentium(R) D CPU 3.00GHz
  Vendor ID : 0    
  Family ID : 15                               
  Model  ID : 4                                
  Stepping  : 7 
  FSB       : 800 MHz
  Cur. Speed: 3000 MHz
  Max Speed : 3800 MHz
  Upgrade   : ZIF Socket
  SMP       : yes     
  x86_64    : yes       
  Flags     : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
  Flags     : cmov pat pse_36 clflsh dts acpi mmx sse sse2 ss
  Flags     : ht acc nx lm                                            
  cpu> 

=== Kernel mode ===
The kernel mode features the "<tt>show list</tt>" command that displays, 
for each hardware category, the needed kernel modules.

  kernel> show list
  Mass storage controller : piix ata_piix
  Network controller : tg3
  Display controller : sisfb
  Bridge : intel-rng iTCO_wdt
  Serial bus controller : i2c-i801
  kernel> 

=== PXE mode ===
The PXE mode displays information about the pxe environment.

  pxe> show list                                                
  PXE                                                           
   PCI device no: 15                             
   Manufacturer : Broadcom Corporation                          
   Product      : NetXtreme BCM5721 Gigabit Ethernet PCI Express
   Addresses    : 192.168.3.8 @ 00:13:72:3b:ce:85
  pxe> 

=== Syslinux mode ===
The Syslinux mode displays the current syslinux versions:

  syslinux> show list
  SYSLINUX              
   Bootloader : PXElinux          
   Version    : PXELINUX 3.72 3.72
   Version    : 840
  Max API    : 30                                    
   Copyright  : Copyright (C) 1994-2008 H. Peter Anvin
  syslinux> 

=== VESA mode ===
The vesa mode displays a synthesis of the vesa configuration:

  vesa> show list
  VESA
   Vesa version : 3.0
   Vendor       : XGI Technology, Inc.
   Product      : Volari Z7
   Product rev. : 1.02.04
   Software rev.: Y 
   Memory (KB)  : 16384
   Modes        : 32                               
  vesa> 

In this example, the vga card supports 32 video modes. 
To display them, use "<tt>show modes</tt>".

Note that "Kernel mode" is the value requested by the "vga=" command line for a linux kernel.
  vesa> show modes
   ResX x ResY x Bits : Kernel Mode : Vesa Mode
  ---------------------------------------------
    800   600      4       770        0x0102
    640   480      8       769        0x0101
    640   400      8       768        0x0100
    800   600      8       771        0x0103
   1024   768      4       772        0x0104
   1024   768      8       773        0x0105
   1280  1024      8       775        0x0107
   1600  1200      8       816        0x0130
   1600  1200     16       817        0x0131
    320   200     15       781        0x010d
    320   200     16       782        0x010e
    640   480     15       784        0x0110
    640   480     16       785        0x0111
    800   600     15       787        0x0113
    800   600     16       788        0x0114
   1024   768     15       790        0x0116
   1024   768     16       791        0x0117
   1280  1024     15       793        0x0119
   1280  1024     16       794        0x011a
    320   240      8       818        0x0132
    400   300      8       819        0x0133
    512   384      8       820        0x0134
    320   240     16       821        0x0135
    400   300     16       822        0x0136
    512   384     16       823        0x0137
    320   200      8       824        0x0138
    640   400     16       825        0x0139
    640   480     32       826        0x013a
    800   600     32       827        0x013b
   1024   768     32       828        0x013c
   1280  1024     32       829        0x013d
   1600  1200     32       830        0x013e
  vesa>


== Roadmap ==
=== Release 0.3.0 ===
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=baaa1ac2e15a3ab2152bc510a8059c0cd763b34d Merging Pam's branch to feature the new CLI]

=== [http://git.zytor.com/users/erwan/hdt.git/tag/?h=hdt-0.3.1 Release 0.3.1] ===
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=9ed3df89eb355c0e55d1157961516f02a4d1836f Adding more coherence in the more_printf() usage]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=9ed3df89eb355c0e55d1157961516f02a4d1836f Adding more coherence about screen clearing]
* Adding VPD support; <!--
--> [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=c31b535638176cf076b8a5adaac6f711cea0eb41 commit], <!-- 
--> [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=569617a6dceca02dea5c72f48911f8987a34f6d4 commit], <!-- 
--> [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=13c60849867ecc575b8f28dc259705b772611402 commit]
* Adding missing dmi chassis in the CLI: done by merging pam's branch in 0.3.0
* When using ISOLINUX default kernel modules file must be modules.pci instead of modules.pcimap: <!--
--> this will solve a common problem reported by users; <!-- 
--> [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=6528356ce321942cf2d1060f84f4fc5f73408249 commit]
* Some tools report strings features multiple spaces; <!--
--> [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=5f036aa1ec3557f444fb8c49f782d31dd53979e7 Removing multiple spaces]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=780c8f8361ff8f6ebd3b4b4a82e991c81c0c3562 Using NULL to end CLI's structures]
     
=== [http://git.zytor.com/users/erwan/hdt.git/tag/?h=hdt-0.3.2 Release 0.3.2] ===
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=ecc21733bb9be5b9b8185389ab7cffe9d6f2e1ff Adding hotkey for VPD (menu)]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=3058efaac90bbc57c1e332a80d76094382cec138 Menu: Don't display non populated VPD' items]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=fdd21ff85b3fa41641f711311f7e62081442dbe2 Adding hdt&gt; show vpd]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=9c5868d154656e3832822dd24dd9701fe55eb2a4 Adding disk's partition detection]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=81910f64ece4b1ca9e7e1ff276d673ef2321b1ea Adding a cli mode for detecting disks]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=db265a9a03849966ec9183f675d539fc3b0d6ecd Using modules.alias to manage kernel modules]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=d222f57d5fce7908f7cca3f32546ac789e8b3f4d Menu must use 25 lines instead of 24]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=c9621dba0331d0024f9c43fc2a5a9f91decded67 Removing dmi&gt; show memory clear screen]

=== [http://git.zytor.com/users/erwan/hdt.git/tag/?h=hdt-0.3.3 Release 0.3.3]===
* Adding more memory information (mostly integrating memdump.c32) (done with several commits)
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=3e5b7b7a03bc8264c2b68b2a3a174ec548b65f37 Fixing Backspace behavior]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=16da4bf8a346e3fc7abf75d0ad903a088301dccc Cursor is blinking]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=b7817ae596d1f9b79d027210f0e7958da3516cb6 Prevent cursor from disappearing]
* [http://git.zytor.com/users/erwan/hdt.git;a=commit;h=3e761dad4cfec0f2dcafb859fb13b8692daf8882 Optmizing screen usage in "show help"]

=== [http://git.zytor.com/users/erwan/hdt.git/tag/?h=hdt-0.3.4 Release 0.3.4] ===
* Fixing int10/13 conflict
* Improving menu's layout to maximize display usage
* Adding more external benchmark/diagnose tools (cpu/disks/...)
* Adding more Fn keys (F1-F12)
* Memory detection fall-back to dmi type 6 when type 17 isn't available
* Adding filesystem detection
* Adding mbr detection (grab info at <!--
--> (older) [http://sf.net/projects/bootinfoscript/] or <!--
--> (newer) {{nowrap|1=[http://github.com/arvidjaar/bootinfoscript] )}}

=== Release 0.4.0 ===
* Adding a saving inventory feature
* Adding IPMI

== Development ==
The development of HDT is here: 
http://git.zytor.com/users/erwan/hdt.git

Additional changes could be merged directly into the main Syslinux git repository.

== Mailing List ==
You can subscribe to the  [http://www.zytor.com/mailman/listinfo/hdt mailing list] 
and/or read the [http://www.zytor.com/pipermail/hdt/ archives].

== Ideas ==
The following ideas represent possible new features for HDT. 
If users report which ideas they really need, 
priorities to develop items could change ;o)

=== Lua Scripting ===
HDT currently detects hardware and generates an output using a menu or via a CLI. 
It could be interesting to add lua support to manage scripting. 
It could be possible to load a file that describes items that the user wants to detect.

=== Saving reports ===
Current versions can't save a report as we can't reach a writable storage.
When using PXELINUX, we can imagine using a tftp put method.
Using GPXELINUX, we can imagine using some http/ftp put methods.

=== Improving disks detection ===
Implementing a simple IDE stack would help in detecting PATA & ATAPI devices. 
Detecting SATA devices would require implementing specific drivers. 
The Coreboot project features some; why not doing some teaming on that?

=== Implementing SMART ===
Once the previous items would be complete, it could be possible to 
add a smartmontools-like feature to display smart status of devices.

=== Adding IPMI ===
IPMI could give HDT more information about the current hardware like sensors, etc... 
While using the "open" interface, we can reach the local BMC, but sounds as it needs a lot of code.

=== Adding VPD ===
Virtual Product Data displays the following:
BIOS Build ID, Product Name, Box Serial Number, Motherboard Serial Number, Machine Type/Model. 

=== Detecting Disk's Partitions ===
Title is pretty obvious ;o)

=== Adding more benchmark/diagnose tools ===
For every kind of component, it could be possible to launch a benchmark/diagnose tool. 
UBCD has many of them; why not trying to load some from both menu and CLI mode.