Question: in Windows, is the DOS from "Shut Down System" -> "Shut down the computer and switch to MS-DOS mode" pure DOS? Thanks!
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Posted 2003-09-05 00:00 · 中国 河南 新乡 教育网
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Posted 2003-09-06 00:00 · 中国 广东 汕头 联通
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Yes
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Posted 2003-09-06 00:00 · 中国 香港 有线宽频用户
The following is quoted from hufge at 2003-9-5 19:43:57:You can think of it this way:
Question: in Windows, is the DOS from "Shut Down System" -> "Shut down the computer and switch to MS-DOS mode" pure DOS? Thanks!
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Posted 2003-09-06 00:00 · 美国 肯塔基州 费耶特县 列克星敦 Charter_Communications
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No! That's the so-called "application SHELL mode," just like "Shell to DOS" in QB. Yesterday iceboy, Master Rushi, and I happened to be talking about this very question. The DOS you return to after choosing "Shut down the computer" in Win9x is the real pure DOS!
Let me explain it with a diagram:
After choosing "Restart the computer in MS-DOS mode" and entering "Shell to DOS", it's equivalent to going from:
IO.SYS -> COMMAND.COM -> WIN.COM
to:
IO.SYS -> COMMAND.COM -> WIN.COM -> COMMAND.COM (at this point it does not count as "pure" DOS)
But if you choose "Shut down the computer" to exit WIN, it's equivalent to going back from:
IO.SYS -> COMMAND.COM -> WIN.COM
to:
IO.SYS -> COMMAND.COM (only at this point is it pure DOS)
If the screen shows "It is now safe to turn off your computer," then it's actually only displaying a picture (that is, LOGOS.SYS). At this time, if you type the CLS or MODE CO80 command, C:\> will appear. This is the pure DOS mentioned above.
Let me explain it with a diagram:
After choosing "Restart the computer in MS-DOS mode" and entering "Shell to DOS", it's equivalent to going from:
IO.SYS -> COMMAND.COM -> WIN.COM
to:
IO.SYS -> COMMAND.COM -> WIN.COM -> COMMAND.COM (at this point it does not count as "pure" DOS)
But if you choose "Shut down the computer" to exit WIN, it's equivalent to going back from:
IO.SYS -> COMMAND.COM -> WIN.COM
to:
IO.SYS -> COMMAND.COM (only at this point is it pure DOS)
If the screen shows "It is now safe to turn off your computer," then it's actually only displaying a picture (that is, LOGOS.SYS). At this time, if you type the CLS or MODE CO80 command, C:\> will appear. This is the pure DOS mentioned above.
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Posted 2003-12-19 00:00 · 中国 浙江 湖州 联通
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Wengier: your topic is very interesting. In particular, the part "If the screen shows 'It is now safe to turn off your computer,' then it's actually only displaying a picture (that is, LOGOS.SYS). At this time, if you type the CLS or MODE CO80 command, C:\> will appear. This is the pure DOS mentioned above." I want to try that when I have time.
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Posted 2003-12-19 00:00 · 中国 浙江 湖州 联通
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Wengier: Doesn't it work? Typing the CLS or MODE CO80 command on the keyboard gets no response. The screen still shows "It is now safe to turn off your computer."
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Posted 2003-12-20 00:00 · 加拿大 安大略省 多伦多
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cwcr: please boot into DOS by selecting "Command Prompt Only" at startup, then use the WIN command to enter Win9x, and then try it again at the "It is now safe to turn off your computer" screen that appears when shutting down.
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Posted 2003-12-21 00:00 · 中国 浙江 湖州 联通
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Oh, I see. I'll go try it again.
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Posted 2003-12-26 00:00 · 中国 辽宁 抚顺 联通
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Quite interesting. Moderator Weng explained it thoroughly. However, Wengier's power supply may be AT; if it's an ATX power supply, don't try it, the whole screen goes black and it shuts down directly.
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Posted 2004-02-02 00:00 · 加拿大 安大略省 多伦多
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If it's an ATX power supply, run the NOOFF.COM program before starting Win9x. That way, when Win9x shuts down it won't power off directly, but will instead display those messages like an AT power supply does. I have several computers, some with AT power supplies and some with ATX power supplies.
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Posted 2004-02-02 00:00 · 中国 辽宁 沈阳 联通
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The following is quoted from Wengier at 2003-9-6 8:02:43:
No! That's the so-called "application SHELL mode," just like "Shell to DOS" in QB. Yesterday iceboy, Master Rushi, and I happened to be talking about this very question. The DOS you return to after choosing "Shut down the computer" in Win9x is the real pure DOS! (rest omitted)
I agree with Wengier's view. That's how I see it too.
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