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rain0007
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『第 16 楼』:
我就遇到了这个问题
使用 LLM 解释/回答一下
我就遇到了这个问题
I just encountered this problem
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 2007-6-21 22:27 |
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xzzxl
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『第 17 楼』:
关于HPFS转贴
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HPFS 概述
HPFS 文件系统最早是随 OS/2 1.2 引入的，目的是提高访问当时市场上出现的更大硬盘的能力。此外，当时也需要一个新的可以扩展命名系统、组织性和安全性的文件系统，以便满足网络服务器市场日益增长的需求。HPFS 保留了 FAT 的目录组织，同时增加了基于文件名的自动目录排序功能。文件名扩展到最多可为 254 个双字节字符。HPFS 还允许由“数据”和特殊属性组成文件，从而在支持其他命名规则和安全性方面增加了灵活性。此外，分配单位也从簇改为物理扇区（512 字节），这减少了磁盘空间的浪费。
在 HPFS 下，目录项包含的信息比在 FAT 下更多。至于属性文件，则还包括有关修改、创建、访问日期和时间的信息。在 HPFS 下，目录项不是指向文件的第一个簇，而是指向 FNODE。FNODE 可以包含文件的数据、指向文件的数据的指针或其他最终指向文件的数据的结构。
HPFS 试图将一个文件尽可能分配在连续的扇区内。这样做是为了提高连续处理文件的速度。
HPFS 将一个驱动器组织成一系列的 8 MB 频带，并且只要有可能文件就包含在其中一个频带中。频带与频带之间为 2K 的分配位图，用来跟踪一个频带内哪些扇区已分配，哪些扇区尚未分配。分频带可以提高性能，原因是驱动器头不必回到磁盘的逻辑顶部（通常是 0 柱面)，而只需回到最近的频带分配位图就可以判断文件的存储位置。
此外，HPFS 还包括两个唯一的特殊数据对象
### Overview of HPFS
The HPFS file system was first introduced with OS/2 1.2, aiming to enhance the ability to access larger hard disks emerging in the market at that time. Additionally, a new file system was needed then that could expand the naming system, organization, and security to meet the growing demands of the network server market. HPFS retained the directory organization of FAT while adding automatic directory sorting based on file names. File names were extended to up to 254 double-byte characters. HPFS also allowed files to be composed of "data" and special attributes, thereby increasing flexibility in supporting other naming rules and security. Moreover, the allocation unit was changed from clusters to physical sectors (512 bytes), which reduced the waste of disk space.
Under HPFS, directory entries contain more information than under FAT. As for attribute files, they also include information about modification, creation, access dates, and times. Under HPFS, directory entries do not point to the first cluster of a file but to an FNODE. An FNODE can contain the file's data, pointers to the file's data, or other structures that ultimately point to the file's data.
HPFS attempts to allocate a file in as many consecutive sectors as possible. This is done to improve the speed of sequential file processing.
HPFS organizes a drive into a series of 8 MB bands, and files are included in one of these bands whenever possible. Between bands are 2K allocation bitmaps to track which sectors within a band are allocated and which are not. Banding can improve performance because the drive head does not have to return to the logical top of the disk (usually cylinder 0), but only needs to return to the nearest band allocation bitmap to determine where the file is stored.
In addition, HPFS also includes two unique special data objects
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2007-6-24 22:28 |
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driver1998
高级用户
积分 740
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注册 2008-5-23
来自 中国,广东
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2008-8-21 17:55 |
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freeants001
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2009-4-25 01:25 |
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netwinxp
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『第 20 楼』:
使用 LLM 解释/回答一下
HPFS和NTFS的分区标志一样是07H，最好不要混用，否则很容易出问题。
The partition flags of HPFS and NTFS are both 07H. It is best not to mix them, otherwise problems are very likely to occur.
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2009-5-4 21:02 |
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fujianabc
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『第 21 楼』:
使用 LLM 解释/回答一下
Originally posted by netwinxp at 2009-5-4 09:02 PM:
HPFS和NTFS的分区标志一样是07H，最好不要混用，否则很容易出问题。
HPFS和NTFS的确都是07，但windows的ntfs驱动能很好的把两者区分开来的，不会搞错的。因为winnt从一开始的代码里面就包含了对HPFS分区识别的代码，能够从文件系统的其他信息来区分HPFS和NTFS。
我以前试过，xp下的chkdsk和convert等命令都能识别HPFS分区，当试图对hpfs分区操作时，会提示该版本chkdsk/convert不支持hpfs分区，而在winnt 3.x中的这些命令能直接操作HPFS分区。
Last edited by fujianabc on 2009-5-5 at 05:03 ]
Originally posted by netwinxp at 2009-5-4 09:02 PM:
Both HPFS and NTFS use partition flag 07H. It's best not to mix them, otherwise problems are likely to occur.
HPFS and NTFS indeed both use 07, but Windows' NTFS driver can well distinguish between the two and won't make a mistake. Because the code in Windows NT from the very beginning included code to identify HPFS partitions, and it can distinguish HPFS and NTFS from other information of the file system.
I tried it before. The chkdsk and convert commands in XP can recognize HPFS partitions. When trying to operate on an HPFS partition, it will prompt that this version of chkdsk/convert doesn't support HPFS partitions, while these commands in Windows NT 3.x can directly operate on HPFS partitions.
Last edited by fujianabc on 2009-5-5 at 05:03 ]
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2009-5-5 05:02 |
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ryl228
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『第 22 楼』:
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等了一天了需要这个东西啊
Waited all day and need this thing
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2009-6-8 21:41 |
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etiger
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2009-6-22 01:15 |
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yly888
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2010-4-20 09:47 |
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doslike
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『第 25 楼』:
使用 LLM 解释/回答一下
vmware虚拟机的共享文件夹映射成硬盘后，硬盘的格式是htfs
After the shared folder of the VMware virtual machine is mapped to a hard disk, the format of the hard disk is hffs
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2010-4-25 09:56 |
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wl00560
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『第 26 楼』:
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哈哈，IBM被Microsoft可整惨了，还有Intel……
Haha, IBM was really messed up by Microsoft and also Intel...
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2010-4-25 17:47 |
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abczhang
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2010-4-30 20:51 |
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tallwindy
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2010-5-8 23:36 |
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mrvampire
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2010-5-11 18:37 |
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abcabc8759
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『第 30 楼』:
使用 LLM 解释/回答一下
Apple,IBM,Microsoft以前是合作伙伴,Windows NT保持了对OS/2的大部分兼容性.
Apple, IBM, and Microsoft were previously partners, and Windows NT maintained most compatibility with OS/2.
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2010-5-21 23:06 |
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