常见问题

静电放电 (ESD) 就是指积聚的静电放电的过程。 不应忽视静电放电,因为这是会导致计算机或硬件组件被人为损坏或毁坏的为数不多的几种方式之一。 就像脚在地毯上摩擦之后,再触摸金属物质时有可能会出现静电放电。 静电放电发生时,用户不一定会感受到触电,并且只有在计算机内部操作或移动硬件时才会发生。

如何防止静电放电
防止静电放电的最佳方法是使用静电放电腕带、接地垫或接地工作台。 但是,由于大多数用户都没有这些装置,我们罗列了以下步骤来尽可能降低发生静电放电的几率。

  • 站立 – 我们建议您在计算机上工作时保持站立。 坐在椅子上会产生更多静电。
  • 线缆 - 确保计算机背面的所有线缆都已被拔下(电源线、鼠标、键盘等)。
  • 衣服 - 确保不要穿着会产生大量静电的衣物,如毛衣。
  • 配饰 - 为了减少静电放电和防止其他问题,最好取下所有的首饰。
  • 天气 - 雷暴天气会增加静电放电的风险;除非绝对必要,否则不要在雷暴天气时,在计算机上工作。 在十分干燥的地区,每次有气流(风、空调、鼓风机)经过绝缘表面时,空气本身就会成为静电积聚机制的一部分。 不要被高湿度所误导,并注意连接处以及其他电气接口的腐蚀问题。

若要了解更多有关静电放电以及如何保护电子元件的信息,请参见以下网站。

静电放电协会
http://www.esda.org/aboutESD.html

FAQ: KTC-Gen-ESD

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Secure Erase User Guide for Linux
This guide will walk you through securely erasing your Kingston SSD using Linux tools

SATA Secure Erase Procedure

Warning
Please make sure to have a full backup of any important data before you proceed!

Prerequisites
• You must have root privileges.
• You must have your SSD connected to the system as a secondary (non-OS) drive.
• You must have lsscsi and hdparm installed. You may need to install them with your distribution’s package manager.
• Your drive must not be in a security freeze.
• Your drive must not be password protected.

Instructions
1. Find the device name (/dev/sdX) of the drive you wish to erase:
# lsscsi

2. Make sure drive security is not frozen:
# hdparm -I /dev/sdX | grep frozen

If the output shows "frozen" (instead of "not frozen") then you cannot continue to the next step. You must try to remove the security freeze by trying one of the following methods:

Method 1: Put the system to sleep (suspend to RAM) and wake it up. On most distributions the command to suspend is:
# systemctl suspend

Now issue the hdparm command again. If it worked the output will show “not frozen” (instead of “frozen”).
Method 2: Hot plug the drive. This is done by physically unplugging the SATA power cable from the drive and plugging it back in while the system is powered on. You may need to enable hot plug in BIOS. Not all systems support hot plug.

Now issue the hdparm command again. If it worked the output will show “not frozen” (instead of “frozen”).

3. Set a user password on the drive. The password can be anything. Here we are setting the password to “p”:
# hdparm --security-set-pass p /dev/sdX

4. Issue the secure erase command to the drive using the same password:
# hdparm --security-erase p /dev/sdX

This command may take a few minutes to complete. The drive password is removed upon successful completion.
If the secure erase is interrupted or otherwise fails your drive may become security locked. In this case you can remove the security lock using the command below and then try the secure erase procedure again:
# hdparm --security-disable p /dev/sdX

SATA Secure Erase Example



NVMe Secure Erase Procedure

Warning
Please make sure to have a full backup of any important data before you proceed!

Prerequisites
• You must have root privileges.
• You must have your SSD connected to the system as a secondary (non-OS) drive.
• You must have nvme-cli installed. You may need to install it with your distribution’s package manager.
• Your drive must not be password protected.

Instructions
1. Find the device name (/dev/nvmeXn1) of the drive you wish to erase:
# nvme list

2. Issue the format command to the drive. Here we set the secure erase setting to 1 which indicates a user data erase:
# nvme format /dev/nvmeXn1 --ses=1

This command may take a few minutes to complete.


NVMe Secure Erase Example

FAQ: KSM-SE-LIX

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