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What do you want msdos to boot to? Or do you want you to boot directly to a msdos prompt?<br />

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From the DOS C&gt; Prompt:<br />
<br />
DEBUG RESET.COM<br />
A<br />
XOR AX, AX<br />
NOT AX<br />
PUSH AX<br />
NOT AX<br />
PUSH AX<br />
RETF<br />
(return on a line by itself)<br />
RCX<br />
9<br />
W<br />
Q<br />
<br />
At this point you'll be back at the DOS prompt with a little 9 byte file RESET.COM. Place that file in a batch or run it from the command line to reboot any PC. It will not work from a DOS child under windows.<br />
<br />
M<br />

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If U R having windows 95 then U can go to dos by doing the following:<br />
1. &nbsp;Go to c:<br />
2. &nbsp;Give command &nbsp; &nbsp; &nbsp;attrib -r -s -h msdos.sys<br />
3. &nbsp;Then give &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;edit msdos.sys<br />
4. &nbsp;A line with BootGUI=1 will be there. Change it to BootGUI=0.<br />
5. &nbsp;Save the file &amp;&nbsp;Exit.<br />
6. &nbsp;Give attrib +s +h +r msdos.sys<br />
<br />
If U give win after the pc has booted to Dos, then windows will be loaded.
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<div>
If U R having windows 95 then U can go to dos by doing the following: <br />
1. &nbsp;Go to c: <br />
2. &nbsp;Give command &nbsp; &nbsp; &nbsp;attrib -r -s -h msdos.sys <br />
3. &nbsp;Then give &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;edit msdos.sys <br />
4. &nbsp;A line with BootGUI=1 will be there. Change it to BootGUI=0. <br />
5. &nbsp;Save the file &amp;&nbsp;Exit. <br />
6. &nbsp;Give attrib +s +h +r msdos.sys <br />
<br />
If U give win after the pc has booted to Dos, then windows will be loaded.
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<div>
&gt;&gt;Give attrib +s +h +r msdos.sys <br />
<br />
That's totally unnecessary...<br />
<br />

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Vikiing, it may be &quot;unnecessary&quot; but it is good practice. I kind of like to protect MSDOS.SYS, IO.SYS, COMMAND.COM, AUTOEXEC.BAT and CONFIG.SYS with ATTRIB +R +H to make the system capable of riding thru a DEL *.* at the C:\ prompt ...<br />
<br />
M<br />

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&gt;&gt;I kind of like to protect MSDOS.SYS, IO.SYS, COMMAND.COM, AUTOEXEC.BAT and CONFIG.SYS with ATTRIB +R +H to make the system capable of riding thru a DEL *.* <br />
<br />
OK, you can like, but I definitely not. On the other hand, if you work at root directory, then you must organize a bit better your disk and/or your way of working; noone a bit clever would work at root (obviously, under normal circumstances)...<br />

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It's not *me* I'm worried about. But I've run *large* (1200 user) lans and I can tell you that the user community screws with anything they can *see*. I can't tell you the number of times I've seen systems wiped because some moron did a DEL *.* instead of a DEL A:*.* to wipe a floppy. It's a simple precaution and certainly saves more time than it looses. In fact our workstation auditor does the ATTRIB +R +H every month just for grins! You're thinking 'for me', I'm thinking 'for all users'... :-)<br />
<br />
M<br />

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<div>
First all the responses about W95 the response is no i dont have windows 95.<br />
It is pure MSDOS.<br />
<br />
I try to enter the RESET.COM.<br />
All was ok and the result was a 9 bytes length com file.<br />
But launching reset.com do nothing and hangs the pc.<br />
<br />

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For Michael March <br />
I want to boot the PC not to simply returns to DOS prompt.
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Then use my little 9 byte RESET.COM program. Try building it again. I can email a functional copy if you need. The PC shouldn't hang, it should reboot.<br />
<br />
M<br />

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Boot the PC?? <br />
<br />
Do you mean reboot the computer? Or do you mean to turn it on? &nbsp;Your question is rather vague, if you ask me.
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&gt;&gt;You're thinking 'for me', I'm thinking 'for all users'... :-)<br />
<br />
Of course, that's the right process when you have a &quot;public machine&quot; (everybody use, nobody clean). In that case, yes, the MINIMUM protection is that; I agree with you.<br />
<br />
<br />
Eric: under DOS, just do this jerk:<br />
<br />
COPY &nbsp;CON &nbsp;BOOT.COM<br />
51 &nbsp;192 &nbsp;247 &nbsp;208 &nbsp;80 &nbsp;80 &nbsp;203 &nbsp;F6 &nbsp;Enter<br />
<br />
<br />
Those numbers are sequence of Alt-generated characters, typed in sequence, with no intervening spaces.<br />
<br />
Thus, you start typing Alt-51 Alt-192 Alt-247... end with Alt-203, then press F6 and Enter.<br />
<br />
That would create the file named BOOT.COM . Just execute it (type directly BOOT at prompt and press Enter) and voilá !!!!<br />

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<div>
For Michael March again i want to have either a simple executable (com,exe) or a sample C code to make a soft reboot of my PC (that means the same think that i have pressing Ctrl+Alt+del).<br />
Hope this is most clear.<br />
<br />
For vikiing and march2150 i create the BOOT.COM and the RESET.COM EXACTLY as you described.<br />
When i launch the COM file (reset or reboot) the pc hangs and no reboot is done.<br />
<br />
thanks for your help<br />
<br />

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<div>
Because of the short time i have to find a solution i increase the points to 500.
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<div>
Friend Eric: ¿hace you tried what I've suggested? And don't waste so many points; 200 is already a robbery...<br />

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To vikiing<br />
Yes i try. I make the REBOOT.COM as suggested and when i launch it the pc hangs and no reboot is done.<br />
The dos version is MS DOS 6.22<br />
<br />
About the points i need the solution very quickly so perhaps points can do the stuff...
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<div>
Give me your email and I'll send you a copy of reset.com. If *that* doesn't work then there's something else going on.<br />
<br />
All 80x86 CPU's start reset execution at FFFF:0000. Until the memory management IC's are initialized this is the top 64kb segment of the PC's 640Kb memory model (F:0000). My little routine pushes FFFF:0000 onto the stack and then does a Far Return (RETF). This should cause the CPU to restart the ROM BIOS at the same entry point that is used when your finger comes off the [RESET] button.<br />
<br />
If you're running a straight DOS box, this should reboot you in a heartbeat.<br />
<br />
When you're running a DOS child under windows, the DOS child will die but the rest of the machine will continue on. This is because a RETF is a priveleged instruction and the OS can trap a task attempting to execute a priveleged instruction.<br />
<br />
M<br />

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<div>
You can download it from here:<br />
<br />
<a href="ftp://ftp.elsite.ru/pub/Drivers/CDROM/TEAC/TEAC55V1/REBOOT.COM" rel="ugc">ftp://ftp.elsite.ru/pub/Drivers/CDROM/TEAC/TEAC55V1/REBOOT.COM</a>
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Mark: you said &quot;This is because a RETF is a priveleged instruction and the OS can trap a task attempting to execute a priveleged instruction&quot;<br />
<br />
Leaving aside the details, remember Eric stated &quot;i dont have windows 95. <br />
It is pure MSDOS.&quot;<br />
<br />
Your solution should have worked (not mine); I don't know where is the problem.<br />
<br />

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<div>
Ok i load the file from the shortcut given by drittich. It works !!!<br />
<br />
But to be sure i reenter the code given by mark2150.<br />
It works now. I think i make some error when typing it (go figure).<br />
<br />
I give the points to mark2150 because i think he is the one who makes the most.<br />
<br />
thanks to everybody.<br />
You are quite good in your subject.<br />

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Thank you sir!<br />
<br />
M<br />

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<div class="content wysiwyg-content">
I am searching for a dos utility in order to boot my MSDOS pc.<br />
Could be C routine or simple executable to launch.<br />
<br />
thanx
</div>
</div>


I am searching for a dos utility in order to boot my MSDOS pc.
Could be C routine or simple executable to launch.

thanx

Automatic MSDOS boot

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