Increase and Speed Up Slow FireWire 1394 Copy and Transfer in Windows XP SP2增加和加快缓慢的FireWire 1394复制并转移在Windows XP SP2

If you’re using Microsoft Windows XP SP2 (Service Pack 2) and try to use 1394a or 1394b FireWire devices such as external hard drive, the performance of the FireWire devices are greatly decrease and not optimum.The slowness of FireWire devices especially obvious when you transfer, copy or backup your files and documents in your computer local drives to the FireWire connected external portal disk, or when you transfer and copy your photos from digital camera that uses FireWire connection.如果您使用Microsoft Windows XP SP2中（ Service Pack 2中）和尝试使用1394或1394b FireWire设备，如外部硬盘驱动器，表现的FireWire设备大幅减少，而不是optimum.the缓慢， FireWire设备，特别是显而易见的，当你转移，复制或备份您的档案和文件在您的计算机本地硬盘的FireWire连接外部门户网站上，或当您的转让和复制你的照片从数码相机使用FireWire连接。

Normally Firewire 400 and Firewire 800 devices and drives will operate in the range of 26 to 39 megabytes per second on file copy operations in which termed as S800 and S400 speed.通常FireWire 400和FireWire 800的设备和驱动器将在经营范围内26至39兆字节每秒对档案复制行动中，称之为s800和S400速度。 However, if you install Windows XP SP2 or are using Windows XP SP2, the FireWire 1394b ports will be changed to S100 speed, instead of using S400 or S800 speed.不过，如果您在安装Windows XP SP2或使用的是Windows XP SP2中，火线1394b港口将改为S100速度，而不是使用s400或s800速度。 So if you connect any connect a 1394a or 1394b FireWire 400 or 800 device and external hard disk to a 1394b port, the FireWire devices incorrectly run at S100 or about 100 megabits per second, which is the cause for the slow FireWire transfer rate.因此，如果您连接任何连接到1394或1394b FireWire 400或800设备和外接硬碟，以一1394b端口， FireWire设备不当，在S100的运行或约100兆比特每秒，这是造成缓慢的FireWire传输速率。

The resolution to the issue is to install an update for Microsoft Windows XP SP2 KB885222.该决议的问题是安装一更新Microsoft Windows XP SP2的kb885222 。 It’sa hotfix released by Microsoft and described in Knowledge Base article这是修补程序公布的微软和描述的知识库文章 KB885222 kb885222 that corrects this issue.纠正这个问题。 After installing the patch, restart the computer for it to take effect.在安装修补程序，重新启动计算机，它才能生效。

If you add a host controller for a new 1394 device to your computer after installing the KB885222 hotfix, you must add or modify the SidSpeed entry in the Windows registry for the new 1394 host controller to 1 of the following value:如果您添加一个主机控制器为一个新的1394设备到您的计算机后，安装kb885222修复程序，您必须添加或修改sidspeed进入在Windows注册表中新1394主机控制器以1以下值：

0 for S100 speed 0 S100速度
1 for S200 speed 1 L10的速度
2 for S400 speed (default value) 2 S400速度（默认值）
3 for S400/S800 speed (Windows XP Service Pack 1 [SP1] value) 3 s400/s800速度（在Windows XP Service Pack 1 [ SP1的]值）

The steps and instructions to add or modify the SidSpeed registry value are listed on the步骤和指示，添加或修改sidspeed注册表值列于 KB885222 kb885222 Knowledge Base article, with additional information to locate the FireWire controller information necessary to modify the registry value.知识库文章，与其他信息找到FireWire控制器必要的资料，以修改注册表的价值。

IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要说明 ：这是一个机器翻译网页是“按原样”提供的担保。 Machine translation may be difficult to understand.机器翻译可能很难理解。 Please refer to请参阅 original English article英文原版的文章 whenever possible.只要有可能。

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