Power off without shutdown

[Guest]

Hi,
I have build an image with ewf ram reg mode on compact flash, plus the
system is power by a power supply without a power switch like in the ATX.
Since the power supply is not ATX, the power socket connect to the
motherboard is a normal 4 pin (like those in PC), and when the OS is
shutdown, the power is still continue supply to the system and have to turn
is off manualy.
Question
1) By turn off manualy, will there be a chance that the compact flash get
corrupted.
2) It is the same thing if we just turn off without shutdown.

This application is for Kiosk, we want to maximize the life of the system.

thanks

 

[Slobodan Brcin \(eMVP\)]

Netpwm,

If EWF is protecting your OS partition then it is safe at any point in time
(even while OS is working) to turn off power.
Safe from software point of view.

Regards,
Slobodan

 

[Guest]

thanks, i was more worry on the hardware side, my point here is, will the
shutdown command actually send some signal and tell the system that it has
shutdown and will be safe to power off.

thanks

 

[Slobodan Brcin \(eMVP\)]

Netpwm,

You have two cases:
1. ACPI where OS will turn power off automaticaly.
2. Standard where you see it is now safe to turn off .... In this case it
mean that OS completed all writing to HDD nothing more. Since you use EWF
this means nothing to you.

Hardware side depend purely on hardware. (All hardware is or at least should
be made to safely handle power on/power off)

Regards,
Slobodan

 

[KM]

Just to add one more option here if it is too late to upgrade to ACPI.
APM. Check out your BIOS settings dnd MB documentation on whether APM is
supported. Then including NTAPM service in your image and enabling APM by
default will help out shuting down the machine automatically.

KM

 

[Guest]

thanks for the ideal, but i thought that ACPI or APM require ATX power supply
( power socket with a lot of pin to conenct to mb). Anyway will try it.

thanks