官方论坛的最新解决方案
sudo gedit 99-hdd-ugly-fix.sh
#!/bin/bash
if on_ac_power; then
# on AC so don't do any head parking
hdparm -B 254 /dev/sda
hdparm -B 255 /dev/sda
else
# either on battery or power status could not be determined
# so quickly park the head to protect the disk
hdparm -B 128 /dev/sda
fi
sudo install 99-hdd-ugly-fix.sh /etc/acpi/resume.d/
sudo install 99-hdd-ugly-fix.sh /etc/acpi/start.d/
sudo install 99-hdd-ugly-fix.sh /etc/acpi/ac.d/
sudo install 99-hdd-ugly-fix.sh /etc/acpi/battery.d/
创建一个名为"99-hdd-spin-fix.sh"的文件，写如下两行字（针对SATA硬盘）：
#!/bin/sh
hdparm -B 254 /dev/sda
并将该文件复制到以下三个位置：
/etc/acpi/suspend.d/
/etc/acpi/resume.d/
/etc/acpi/start.d/
安装laptop-mode-tools（好像UBuntu 7.10默认就装了的），并修改文件/etc/laptop-mode/laptop-mode.conf，设置CONTROL_HD_POWERMGMT=1
sudo smartctl -a /dev/sda | grep Load_Cycle_Count
