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中国DOS联盟论坛 » DOS启动盘 & LOGO技术 (启动盘室) » [Help] Can DOS boot from a logical partition? View 1,344 Replies 11
Original Poster Posted 2003-05-29 00:00 ·  中国 福建 厦门 教育网
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The active partition is in NTFS format, and there is a FAT32 logical partition. I want to make a DOS/XP dual boot. How should I do it?
Floor 2 Posted 2003-05-29 00:00 ·  中国 台湾 远传电信
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Couldn't you just do that when installing XP??
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Floor 3 Posted 2003-05-29 00:00 ·  中国 福建 厦门 教育网
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How do I do it? Could you be a bit more specific?
And preferably after XP is already installed.
I don't want to reinstall XP again.
Floor 4 Posted 2003-05-30 00:00 ·  中国 台湾 远传电信
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I always set up dual boot when installing XP...
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Floor 5 Posted 2003-05-30 00:00 ·  中国 四川 达州 电信
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It should be possible... just treat it like a 98/XP dual boot...
Floor 6 Posted 2003-05-30 00:00 ·  中国 江苏 无锡 电信
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Dual boot and booting from a logical partition (which should be understood as booting from a logical partition other than drive C) are two different things.
A 98/XP dual boot or a 98/2000 dual boot is, in essence, still booting from drive C.

Now to answer the OP's question: can DOS boot from a logical partition? The active partition is NTFS, there is a FAT32 logical partition, and you want to make a DOS/XP dual boot. How should this be done?

DOS can boot from a logical partition other than drive C. But you need special boot manager software to really make it happen.
Floor 7 Posted 2003-05-30 00:00 ·  美国 肯塔基州 费耶特县 列克星敦 Charter_Communications
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For example, SPFDISK. But I don't recommend booting DOS from a logical partition.
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Floor 8 Posted 2003-05-30 00:00 ·  中国 湖北 武汉 电信
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SPFDISK cannot boot DOS from a logical partition.
Strictly speaking, DOS cannot boot from a logical partition...
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Floor 9 Posted 2003-05-30 00:00 ·  中国 江苏 无锡 电信
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DOS can boot from a logical partition other than drive C.
But there are two conditions: 1. it must be created as a primary partition. 2. it must be active.
DOS can have at most 4 bootable primary partitions.
Each primary partition can have one system installed.
But only one primary partition can be active.
If you want to boot each system, you have to activate a different partition at startup.
For that you need special boot manager software, such as: System Commander, to really make it happen.
Floor 10 Posted 2003-05-30 00:00 ·  中国 江苏 无锡 电信
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Sorry, I got the concept wrong. My answer above does not match the OP's question, please have the moderator delete it.
Floor 11 Posted 2003-05-30 00:00 ·  中国 湖北 武汉 电信
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The principle is that whichever system is booted becomes c: at startup.
So it is not a logical partition......
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Floor 12 Posted 2003-05-31 00:00 ·  中国 福建 厦门 教育网
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After getting pointers from several experts, I gave up the idea of booting DOS from a logical partition.
I used pqmagic to split out another primary partition, activated it, installed ms-dos7.1,
then used the XP installation disc to install to another partition. After the files were copied and it automatically
restarted from the hard disk, I canceled the installation, deleted the files generated in the installation directory, then
modified boot.ini under the active partition, restarted, and OK.

But I’ve never used XP’s repair function before; supposedly using repair is faster.
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