http://bbs.pediy.com/showthread.php?t=173869
关于USB模拟成软驱启动
如果运气好的话，U盘引导的操作系统其实很容易就完成了。例如，将系统的软盘映像haribote.img （osask项目里）用winhex直接复制到U盘的第一扇区开始的地方，U盘引导盘就完成了。cpu会用软驱模拟器启动USB，因此此模式下USB的读写和软盘相同。
通过实验，在我的Dell一体机里，可以成功引导并进入系统，和在虚拟机里看到的效果一样，可以响应键盘输入，但遗憾的是鼠标不能移动了（why？） ； 而在我的Thinkpad T410 笔记本里却引导失败（能进入引导程序，但加载系统失败，估计读写出了问题，难道启动USB的时候用的是硬盘模拟器而不是软盘模拟器？）。
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相关资料：
http://board.flatassembler.net/topic.php?t=12389
摘录
USB Booting Secret #2: What happens in the boot sector, stays in the boot sector!
When it comes to USB booting there are basically 4 types of computers:
PC without USB, or with USB and can't boot USB because of old BIOS firmware. ;不支持USB启动
PC that always boots USB with floppy disk emulation. ;总是以软驱模拟器引导
PC that always boots USB with hard drive emulation. ;总是以硬盘驱动器模拟器引导
PC that examines the boot sector to determine the type of emulation and/or with BIOS selection setup.;根据BIOS的设置来决定模拟器类型
相关资料
A simple FAT32 bootloader written in assembly to boot from USB drives.
http://blog.ishans.info/2012/01/19/a-simple-fat32-bootloader-written-in-assembly-to-boot-from-usb-drives/
相关资料
http://board.flatassembler.net/topic.php?t=12469
http://mbldr.sourceforge.net/specsedd30.pdf
摘录
USB Booting Secret # 3: If the PC can boot from USB, you can use the BIOS to access the entire flash drive.
Interrupt 13h, ah=42h Extended Read and ah=43h Extended Write can be used for USB flash drive LBA access.
关于USB模拟成软驱启动
如果运气好的话，U盘引导的操作系统其实很容易就完成了。例如，将系统的软盘映像haribote.img （osask项目里）用winhex直接复制到U盘的第一扇区开始的地方，U盘引导盘就完成了。cpu会用软驱模拟器启动USB，因此此模式下USB的读写和软盘相同。
通过实验，在我的Dell一体机里，可以成功引导并进入系统，和在虚拟机里看到的效果一样，可以响应键盘输入，但遗憾的是鼠标不能移动了（why？） ； 而在我的Thinkpad T410 笔记本里却引导失败（能进入引导程序，但加载系统失败，估计读写出了问题，难道启动USB的时候用的是硬盘模拟器而不是软盘模拟器？）。
/*****************************************/
相关资料：
http://board.flatassembler.net/topic.php?t=12389
摘录
USB Booting Secret #2: What happens in the boot sector, stays in the boot sector!
When it comes to USB booting there are basically 4 types of computers:
PC without USB, or with USB and can't boot USB because of old BIOS firmware. ;不支持USB启动
PC that always boots USB with floppy disk emulation. ;总是以软驱模拟器引导
PC that always boots USB with hard drive emulation. ;总是以硬盘驱动器模拟器引导
PC that examines the boot sector to determine the type of emulation and/or with BIOS selection setup.;根据BIOS的设置来决定模拟器类型
相关资料
A simple FAT32 bootloader written in assembly to boot from USB drives.
http://blog.ishans.info/2012/01/19/a-simple-fat32-bootloader-written-in-assembly-to-boot-from-usb-drives/
相关资料
http://board.flatassembler.net/topic.php?t=12469
http://mbldr.sourceforge.net/specsedd30.pdf
摘录
USB Booting Secret # 3: If the PC can boot from USB, you can use the BIOS to access the entire flash drive.
Interrupt 13h, ah=42h Extended Read and ah=43h Extended Write can be used for USB flash drive LBA access.
