[syslinux] memdisk - reboot loaded image

[Puckett, Richard H.]

Quinn,

Thanks for the pointer.  I had seen something like this
in my searches, but didn't follow up on it.  Now that you've
reminded me of my "miss", I'll be sure to check this out.

Thanks again,

- Rick


-----Original Message-----
From: syslinux-bounces at zytor.com [mailto:syslinux-bounces at zytor.com]On
Behalf Of Quinn
Sent: Thursday, April 07, 2005 6:39 AM
To: syslinux at zytor.com
Subject: Re: [syslinux] memdisk - reboot loaded image


QEMM386.SYS has been using this technique for years.  The feature is 
called Quickboot.  I've tested it with
memdisk and it works perfectly.  Anything I write to the ramdisk is 
still there when using Quickboot - and as the
name implies it is "quick".  QEMM386 redirects the reboot handler for 
CTRL-ALT-DEL so when I press CTRL-ALT-DEL
it skips POST and boots from the memdisk image in memory.  :-)

Quinn

Marc Haisenko wrote:

>On Wednesday 06 April 2005 02:00, Murali Krishnan Ganapathy wrote:
>  
>
>>To reboot
>>---------
>>You can write a really small program to do this.
>>Create a file called "reboot.com". The assembly code should be
>>
>>JMP FFFF:0000
>>
>>thats it. This location contains the BIOS code which reboots the
>>machine. You should be able to create this using the "debug.exe" utility
>>in three lines.
>>
>>If you are unable to do this, let me know, I will try to get the .COM file.
>>    
>>
>
>This would be a cold boot, then. To warm boot you'd have to store the 1234h in 
>the word at 0040:0072. It's been a few years since I've written x86 assembler 
>programs so I can't write it down in assembler :-)
>C'ya,
>	Marc
>
>  
>

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