It mounts just like you mounted /boot, but you may need to activate the volume group first:
Code:# vgscan --mknodes
# vgchange -ay
# lvscan
#
# mkdir /mnt/somename
# mount /dev/VolGroup00/LogVol00 /mnt/somenameBut keep in mind, only the v5... (and presumably future versions of) Knoppix natively supports lvm2, which is used in FC5.Also, the LVM HowTo is your friend: http://www.ibiblio.org/pub/Linux/doc...LVM-HOWTO.html
Last edited by WhatsHisName : 08-07-2006 at 12:33 PM.
Saturday, August 19, 2006
弧圈球
http://www1.hfut.edu.cn/studentlife/pingxie/xuepingpang/huquanqiu.htm
(一)问:弧圈球有哪几种?其动作要点是什么?
答:
按击球的方位来划分，弧圈球可分为两种:正手弧圈球，反手弧圈球。在正手弧圈球中又分为加转弧圈，前冲弧圈，侧旋弧圈，直板正胶弧圈(俗称小上旋)和不转弧圈。以上各种弧圈球的基本动作要领分别简述如下:
1、正手加转弧圈球：（以右手为例）左脚在前，右脚稍后，两膝微屈，重心约在右脚上。手臂自然下垂伸直，拍形略前倾，当来球从台面弹起时，右脚蹬地，腰部向左上方转动，上臂带动前臂向左前上方加速挥动，击球瞬间，整个身体的动量传递到手腕，加速度达到最大。在来球的下降初期摩擦球的中部或中上部。 击球后重心移至左脚。
2．正手前冲弧圈球:站位基本上与加转弧圈球相同。手臂的引拍要比如转弧圈球高一些，球拍与地面大约形成80度夹角。当球从台面弹起时，腿、腰、上臂、前臂依次进行动量传递，击球瞬间手腕向内向前略为转动，加速度达到最大，在上升后期或高点期摩擦球的中上部。击球后，重心移至左脚。
3．直板正胶正手弧圈球(俗称小上旋):与反胶弧圈动作要领基本上相似，但因正胶粒凸起，胶皮的摩擦系数小于反胶，缺少粘性，触球面积没有反胶大，如果摩擦过薄，就容易"打滑"，所以在击球时要加强手腕转动，扩大球拍接触球的面积，这是正胶弧圈与反胶弧圈的最大区别。此外，正胶弧圈动作较小，以前臂发力为主，球的弧线较低。 4．正手侧旋:击球准备姿势和整个身体的用力方法与加转弧圈球相似，但在击球时，摩擦球的偏右面，拍形稍前倾，手臂自右外侧向左前上方(近似于弧形)发力。在拉侧旋球时，如果击球的右中部或右中上部，拉出的球是侧上旋;如果击球的中下部，主要以向内向前发力为主，往往会拉出侧下旋弧圈球。在实践中，一些优秀运动员常有运用。
5.不转弧圈球(亦称假弧圈）:初学者可在掌握了加转弧圈球的动作要领的基础上，把拍形稍后顾，触球的中下部，手臂紧张些向前上方推拉球就可拉出不转弧圈球。
6.横拍反手弧圈球: 两脚平行或左脚稍后站立，两膝微屈。击球前，将球拍引至腹部下方。当球从台面弹起时，以肘关节为轴，前臂迅速向上挥动，结合手腕向上转动的力量，在下降期摩擦球的中部或中上部。击球过程中，两腿向上蹬伸。
7.直拍反手反面拉弧圈球:由于直拍反手位拉弧圈球在用力上受到身体的阻碍，手臂力量的发挥受到限制，所以难以拉出象横拍一样高质量的弧圈球。随着乒乓球运动的发展，中国直拍运动员创新意识的加强，为了弥补直拍反手位技术的不足，目前已有许多运动员借鉴横拍反手拉弧圈球的特点，开始运用直拍反手的反面拉弧圈球这一新技术。此项技术对于初学者掌握起来可能难度较大，此处仅作为一种中国乒坛的技术创新信息介绍给初学者，并希望有越来越多的初学者对这一新技术进行尝试，使之得以普及。其动作方法是:两脚平行或左脚稍后站立，两膝微屈，重心较低。击球前，球拍引至腹部下方，肘部略向前凸，手腕下垂内收，拍形前倾。当球从台面弹起时，以肘关节为轴，前臂迅速向前上挥动，击球瞬间手腕向右前上方转动，在下降初期或下降后期用球拍的反面摩擦球的中部或中上部。击球后，重心放在两脚中间。
(二)问：拉弧圈球易犯的毛病有哪些?如何纠正?
答:
1．在引拍过程中，前臂和上臂在肘关节处的夹角没有打开，而是靠拉肘向后引拍，影响拉球的发力。在训练中有意识地把前臂放下来，配合脚部的转动和重心移动，引拍效果会好些。
2．击球前 ，腰部向后转动过大，形成掷铁饼式的准备姿势，影响向前发力。在实践中，只要感到身体的重心能够移至击球一侧脚时即可。
3．击球时，球拍过于前倾，摩擦球过薄，使拉球的力量减小，准确性降低，容易打在拍边，出现人们常说的"飞碟"现象。击球时球拍不要过于前倾，同时注意手腕向内向前的转动，这样方可拉出高质量的弧圈球。
4、拉球过程中，手臂由后直接向前挥动，成近似于直线型，难以制造拉球的弧线。正确的挥动方法是手臂由右后下方，以肘关节为轴，向左前上方挥动，其挥动轨迹近似于"小弧型"，这也部分地体现了弧圈球这一技术术语的内涵。
5．肩部过于紧张，动作僵硬。由于弧圈球的动作比一般攻球动作稍大些，因此要做到拉后手臂，尤其是肩部要迅速放松还原，以利于连续拉和提高拉后扣杀的命中率。
(三)问:如何练习拉弧圈球?
答:
1、徒手模仿拉弧圈球的动作;
2．一人发中路出台的下旋球，另一人练习拉弧圈球;
3．一人推移，另一人练习连续拉弧圈球;
4．一人正手攻球，另一人连续拉;
5．二人对搓，固定一个搓中转拉;
6．一人削球，另一人连续拉;
7．以上练习，先拉固定点，再拉非固定点;
8．上台连续拉上旋球，逐步过渡到2/3台;
9、二点对一点的推拉练习;
10．不同落点对一点的推、拉、攻练习;
11．对拉练习;
12．发球抢拉练习;
13．接发球抢拉练习;
14、拉、扣结合练。
(一)问:弧圈球有哪几种?其动作要点是什么?
答:
按击球的方位来划分，弧圈球可分为两种:正手弧圈球，反手弧圈球。在正手弧圈球中又分为加转弧圈，前冲弧圈，侧旋弧圈，直板正胶弧圈(俗称小上旋)和不转弧圈。以上各种弧圈球的基本动作要领分别简述如下:
1、正手加转弧圈球：（以右手为例）左脚在前，右脚稍后，两膝微屈，重心约在右脚上。手臂自然下垂伸直，拍形略前倾，当来球从台面弹起时，右脚蹬地，腰部向左上方转动，上臂带动前臂向左前上方加速挥动，击球瞬间，整个身体的动量传递到手腕，加速度达到最大。在来球的下降初期摩擦球的中部或中上部。 击球后重心移至左脚。
2．正手前冲弧圈球:站位基本上与加转弧圈球相同。手臂的引拍要比如转弧圈球高一些，球拍与地面大约形成80度夹角。当球从台面弹起时，腿、腰、上臂、前臂依次进行动量传递，击球瞬间手腕向内向前略为转动，加速度达到最大，在上升后期或高点期摩擦球的中上部。击球后，重心移至左脚。
3．直板正胶正手弧圈球(俗称小上旋):与反胶弧圈动作要领基本上相似，但因正胶粒凸起，胶皮的摩擦系数小于反胶，缺少粘性，触球面积没有反胶大，如果摩擦过薄，就容易"打滑"，所以在击球时要加强手腕转动，扩大球拍接触球的面积，这是正胶弧圈与反胶弧圈的最大区别。此外，正胶弧圈动作较小，以前臂发力为主，球的弧线较低。 4．正手侧旋:击球准备姿势和整个身体的用力方法与加转弧圈球相似，但在击球时，摩擦球的偏右面，拍形稍前倾，手臂自右外侧向左前上方(近似于弧形)发力。在拉侧旋球时，如果击球的右中部或右中上部，拉出的球是侧上旋;如果击球的中下部，主要以向内向前发力为主，往往会拉出侧下旋弧圈球。在实践中，一些优秀运动员常有运用。
5.不转弧圈球(亦称假弧圈）:初学者可在掌握了加转弧圈球的动作要领的基础上，把拍形稍后顾，触球的中下部，手臂紧张些向前上方推拉球就可拉出不转弧圈球。
6.横拍反手弧圈球: 两脚平行或左脚稍后站立，两膝微屈。击球前，将球拍引至腹部下方。当球从台面弹起时，以肘关节为轴，前臂迅速向上挥动，结合手腕向上转动的力量，在下降期摩擦球的中部或中上部。击球过程中，两腿向上蹬伸。
7.直拍反手反面拉弧圈球:由于直拍反手位拉弧圈球在用力上受到身体的阻碍，手臂力量的发挥受到限制，所以难以拉出象横拍一样高质量的弧圈球。随着乒乓球运动的发展，中国直拍运动员创新意识的加强，为了弥补直拍反手位技术的不足，目前已有许多运动员借鉴横拍反手拉弧圈球的特点，开始运用直拍反手的反面拉弧圈球这一新技术。此项技术对于初学者掌握起来可能难度较大，此处仅作为一种中国乒坛的技术创新信息介绍给初学者，并希望有越来越多的初学者对这一新技术进行尝试，使之得以普及。其动作方法是:两脚平行或左脚稍后站立，两膝微屈，重心较低。击球前，球拍引至腹部下方，肘部略向前凸，手腕下垂内收，拍形前倾。当球从台面弹起时，以肘关节为轴，前臂迅速向前上挥动，击球瞬间手腕向右前上方转动，在下降初期或下降后期用球拍的反面摩擦球的中部或中上部。击球后，重心放在两脚中间。
(二)问：拉弧圈球易犯的毛病有哪些?如何纠正?
答:
1．在引拍过程中，前臂和上臂在肘关节处的夹角没有打开，而是靠拉肘向后引拍，影响拉球的发力。在训练中有意识地把前臂放下来，配合脚部的转动和重心移动，引拍效果会好些。
2．击球前 ，腰部向后转动过大，形成掷铁饼式的准备姿势，影响向前发力。在实践中，只要感到身体的重心能够移至击球一侧脚时即可。
3．击球时，球拍过于前倾，摩擦球过薄，使拉球的力量减小，准确性降低，容易打在拍边，出现人们常说的"飞碟"现象。击球时球拍不要过于前倾，同时注意手腕向内向前的转动，这样方可拉出高质量的弧圈球。
4、拉球过程中，手臂由后直接向前挥动，成近似于直线型，难以制造拉球的弧线。正确的挥动方法是手臂由右后下方，以肘关节为轴，向左前上方挥动，其挥动轨迹近似于"小弧型"，这也部分地体现了弧圈球这一技术术语的内涵。
5．肩部过于紧张，动作僵硬。由于弧圈球的动作比一般攻球动作稍大些，因此要做到拉后手臂，尤其是肩部要迅速放松还原，以利于连续拉和提高拉后扣杀的命中率。
(三)问:如何练习拉弧圈球?
答:
1、徒手模仿拉弧圈球的动作;
2．一人发中路出台的下旋球，另一人练习拉弧圈球;
3．一人推移，另一人练习连续拉弧圈球;
4．一人正手攻球，另一人连续拉;
5．二人对搓，固定一个搓中转拉;
6．一人削球，另一人连续拉;
7．以上练习，先拉固定点，再拉非固定点;
8．上台连续拉上旋球，逐步过渡到2/3台;
9、二点对一点的推拉练习;
10．不同落点对一点的推、拉、攻练习;
11．对拉练习;
12．发球抢拉练习;
13．接发球抢拉练习;
14、拉、扣结合练。
Friday, August 18, 2006
msconfig
http://support.microsoft.com/kb/310560/
How to troubleshoot by using the System Configuration utility in Windows XP
View products that this article applies to.
function loadTOCNode(){}
Article ID
:
310560
Last Review
:
June 8, 2004
Revision
:
1.0
This article was previously published under Q310560
INTRODUCTION
loadTOCNode(1, 'summary');
This article describes how to troubleshoot configuration errors in Microsoft Windows XP by using the System Configuration utility (Msconfig.exe).
Back to the top
MORE INFORMATION
loadTOCNode(1, 'moreinformation');
The System Configuration utility automates the routine troubleshooting steps that Microsoft Product Support Services Support Professionals use when they diagnose system configuration issues. When you use this utility to modify the system configuration, you can select check boxes to eliminate issues that do not pertain to your configuration. This process reduces the risk of typing errors that you may make when you use a text editor such as Microsoft Notepad. You must be logged on as an administrator or as a member of the Administrators group to use the System Configuration utility. To start the System Configuration utility, click Start, click Run, type msconfig in the Open box, and then click OK. When you use the System Configuration utility, you can easily reset or change the configuration settings in Windows to include preferences for the following files and settings:
•
The System.ini file
•
The Win.ini file
•
The Boot.ini file
•
Programs that are set to load during the startup process (these programs are specified in the Startup folder and in the registry)
•
Environment settings
•
International settingsTo prevent any one of these items from loading when you restart the computer, use either of the following two methods:
•
Click the General tab, and then click Diagnostic Startup - load basic devices and services only. When you use this option, device drivers and software are loaded interactively when you restart the computer. NoteWhen you use this method, Microsoft services such as Networking, Plug and Play, Event Logging, and Error Reporting are temporarily disabled. You also permanently delete all restore points for the System Restore utility. Do not use this method if you want to retain your restore points for System Restore, or if you have to use a Microsoft service to test a problem.
•
Click the General tab, and then click Selective Startup. You can chose the files and the settings that you want the computer to load when you restart the computer. You can select any of the following options:
•
Process SYSTEM.INI File
•
Process WN.INI file
•
Load System Services
•
Load Startup ItemsThe following settings apply to these options:
•
If the check box is selected, the configuration file is processed when you restart the computer.
•
If the check box is cleared, the configuration file is not processed when you restart the computer.
•
If the check box is selected, but is unavailable, some items are still loading from that configuration file when you restart the computer.
•
If the check box is not selected, but is unavailable, the configuration file is not present on the computer.
•
You cannot clear the Use Original BOOT.INI check box. NoteWhen you clear the Load System Services check box, you disable Microsoft services such as Networking, Plug and Play, Event Logging, and Error Reporting. You also permanently delete all restore points for the System Restore utility. Do not clear this check box if you want to retain your restore points for System Restore, or if you have to use a Microsoft service to test a problem.Before you start a troubleshooting session, you can use the System Configuration utility to initiate a System Restore operation. To do this, click the General tab, and then click Launch System Restore. You can then create a restore point that you can use to restore your computer to a previous state. To prevent individual items or lines from a specific configuration file from loading when you restart your computer, click the tab for that particular configuration file, and then click to clear the check box for the individual line or item that you do not want to load. Check boxes that are unavailable on the SYSTEM.INI and WIN.INI tabs indicate that the lines are temporarily removed by the System Configuration utility.
•
To change the currently active line or item, click a different line or item or click Move Up or Move Down to move between items.
•
To create a new entry in any one of the configuration files, click New.
•
To edit a line that is currently selected, click Edit.Note When you click to clear a check box for an item or a line, the Selective Startup option on the General tab is automatically selected. After you make the selections that you want, click OK, and then restart the computer when you are prompted to initiate the changes. To extract individual Windows files directly from the cabinet files, click the General tab, and then click Expand File. To verify that all the configuration files and all the items that are listed in those files are loaded when you restart your computer, click the General tab, and then click Normal startup.
Back to the top
REFERENCES
loadTOCNode(1, 'references');
For additional information about how to troubleshoot Windows XP Startup problems, click the following article number to view the article in the Microsoft Knowledge Base:
308041 (http://support.microsoft.com/kb/308041/) Resources for troubleshooting startup problems in Windows XP For additional information about how to perform a clean boot in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
310353 (http://support.microsoft.com/kb/310353/) How to perform a clean boot in Windows XP For additional information about how to use System Restore to restore Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
306084 (http://support.microsoft.com/kb/306084/) How to restore the operating system to a previous state in Windows XP
How to troubleshoot by using the System Configuration utility in Windows XP
View products that this article applies to.
function loadTOCNode(){}
Article ID
:
310560
Last Review
:
June 8, 2004
Revision
:
1.0
This article was previously published under Q310560
INTRODUCTION
loadTOCNode(1, 'summary');
This article describes how to troubleshoot configuration errors in Microsoft Windows XP by using the System Configuration utility (Msconfig.exe).
Back to the top
MORE INFORMATION
loadTOCNode(1, 'moreinformation');
The System Configuration utility automates the routine troubleshooting steps that Microsoft Product Support Services Support Professionals use when they diagnose system configuration issues. When you use this utility to modify the system configuration, you can select check boxes to eliminate issues that do not pertain to your configuration. This process reduces the risk of typing errors that you may make when you use a text editor such as Microsoft Notepad. You must be logged on as an administrator or as a member of the Administrators group to use the System Configuration utility. To start the System Configuration utility, click Start, click Run, type msconfig in the Open box, and then click OK. When you use the System Configuration utility, you can easily reset or change the configuration settings in Windows to include preferences for the following files and settings:
•
The System.ini file
•
The Win.ini file
•
The Boot.ini file
•
Programs that are set to load during the startup process (these programs are specified in the Startup folder and in the registry)
•
Environment settings
•
International settingsTo prevent any one of these items from loading when you restart the computer, use either of the following two methods:
•
Click the General tab, and then click Diagnostic Startup - load basic devices and services only. When you use this option, device drivers and software are loaded interactively when you restart the computer. NoteWhen you use this method, Microsoft services such as Networking, Plug and Play, Event Logging, and Error Reporting are temporarily disabled. You also permanently delete all restore points for the System Restore utility. Do not use this method if you want to retain your restore points for System Restore, or if you have to use a Microsoft service to test a problem.
•
Click the General tab, and then click Selective Startup. You can chose the files and the settings that you want the computer to load when you restart the computer. You can select any of the following options:
•
Process SYSTEM.INI File
•
Process WN.INI file
•
Load System Services
•
Load Startup ItemsThe following settings apply to these options:
•
If the check box is selected, the configuration file is processed when you restart the computer.
•
If the check box is cleared, the configuration file is not processed when you restart the computer.
•
If the check box is selected, but is unavailable, some items are still loading from that configuration file when you restart the computer.
•
If the check box is not selected, but is unavailable, the configuration file is not present on the computer.
•
You cannot clear the Use Original BOOT.INI check box. NoteWhen you clear the Load System Services check box, you disable Microsoft services such as Networking, Plug and Play, Event Logging, and Error Reporting. You also permanently delete all restore points for the System Restore utility. Do not clear this check box if you want to retain your restore points for System Restore, or if you have to use a Microsoft service to test a problem.Before you start a troubleshooting session, you can use the System Configuration utility to initiate a System Restore operation. To do this, click the General tab, and then click Launch System Restore. You can then create a restore point that you can use to restore your computer to a previous state. To prevent individual items or lines from a specific configuration file from loading when you restart your computer, click the tab for that particular configuration file, and then click to clear the check box for the individual line or item that you do not want to load. Check boxes that are unavailable on the SYSTEM.INI and WIN.INI tabs indicate that the lines are temporarily removed by the System Configuration utility.
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To change the currently active line or item, click a different line or item or click Move Up or Move Down to move between items.
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To create a new entry in any one of the configuration files, click New.
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To edit a line that is currently selected, click Edit.Note When you click to clear a check box for an item or a line, the Selective Startup option on the General tab is automatically selected. After you make the selections that you want, click OK, and then restart the computer when you are prompted to initiate the changes. To extract individual Windows files directly from the cabinet files, click the General tab, and then click Expand File. To verify that all the configuration files and all the items that are listed in those files are loaded when you restart your computer, click the General tab, and then click Normal startup.
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REFERENCES
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For additional information about how to troubleshoot Windows XP Startup problems, click the following article number to view the article in the Microsoft Knowledge Base:
308041 (http://support.microsoft.com/kb/308041/) Resources for troubleshooting startup problems in Windows XP For additional information about how to perform a clean boot in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
310353 (http://support.microsoft.com/kb/310353/) How to perform a clean boot in Windows XP For additional information about how to use System Restore to restore Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
306084 (http://support.microsoft.com/kb/306084/) How to restore the operating system to a previous state in Windows XP
Monday, August 07, 2006
"Plug & Play Configuration Error" on start-up
1. Take out those Plug & Play devices for a while and then put them in
or
2. Take out the battery from the motherboard. leave it out for an hours or so and put it back in
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