阅读:1290回复:2
原始模式(raw mode)
在书上看到以下的一段文字:
总线驱动程序不能够处理其总线上的设备的读和写请求,一个设备的读和写请求由设备功能驱动程序处理(看1.4.1.2部分)。仅仅当设备以原始模式使用时,父总线驱动程序处理设备的读和写。 不明白其中的“原始模式”是一个什么概念,或者说是相对其它的什么模式来说的。 |
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沙发#
发布于:2002-05-13 10:20
RAW
A system-supplied FSD that is the \"last resort\" for all I/O requests requiring file system support. When the I/O Manager calls active file systems to mount a volume, RAW is always called last because it recognizes all disk and tape media. However, RAW supplies very primitive file handling capabilities. That is, it does not impose any on-disk file structure or metadata structures for the information on the media; it simply allows read/write access to the logical blocks on the physical disk. For example, it treats the whole disk as a single file and supplies physical-disk-level VBN access to the disk. |
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板凳#
发布于:2002-05-13 11:07
谢谢AllenZh的回答。
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