各位帮忙。
想问个硬盘的问题，如果一只驴一线50K上传，另一只驴一线50K下载，对于硬盘来说会不会是视同相等的动作？或者是写入相比读取会更伤硬盘？
我有只希捷7200.7的102G一直是处于PIO传送模式，已经忍受了几天，今天断电拔下光驱，重启时提示硬盘扫描。由于记得是正常关机，于是跳过。进入XP后，没看到120G硬盘的分区。
再重启，还是提示扫描，执行，扫102G的最后一个分区，花了1.5个小时，进入XP后正常显示各分区。再查看时，还是显示PIO模式。
于是关机，断电。开机，又提示要扫描，这次还是扫同一个分区，但居然花了6个小时有多。扫完进入XP后，这只硬盘还是PIO模式。这只硬盘是挂在IDE2口，设为主盘，以前曾经看过是DMA 3 模式，后来拔下电源一段时间，前几天重挂上，就发觉奇怪的变了PIO模式了。
会不会是开始想罢工了它？
硬盘扫描后，生成了一个BOOTEX.LOG ：
Checking file system on P:
The type of the file system is FAT32.
One of your disks needs to be checked for consistency. You
may cancel the disk check, but it is strongly recommended
that you continue.
Windows will now check the disk.
Volume Serial Number is 78BC-3A90
Read failure with status 0xc000009c at offset 0x97ed05400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x96006d400 for 0x10000 bytes.
Windows is verifying free space...
Read failure with status 0xc000009c at offset 0x9d381d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9d6f6d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9d84ed400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9d89ad400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9d8a0d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9d9f9d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9da23d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9e03fd400 for 0x10000 bytes.
Read failure with status 0xc0000185 at offset 0x9e1bfd400 for 0x10000 bytes.
Read failure with status 0xc0000185 at offset 0x9e1c3d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9e348d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9e349d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9e34dd400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9e353d400 for 0x10000 bytes.
Read failure with status 0xc0000185 at offset 0x9e830d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9e83cd400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9fac3d400 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x9fac8d400 for 0x10000 bytes.
Read failure with status 0xc0000185 at offset 0x9fac9d400 for 0x10000 bytes.
Bad sectors found.
Free space verification is complete.
Windows has made corrections to the file system.
42224512 KB total disk space.
192 KB in 6 hidden files.
800 KB in 25 folders.
37992704 KB in 218 files.
各位替我看看，现在硬盘情况怎样，还有是怎样才能设回DMA的模式。
BTW：还有个问题，如果电脑要通过自检，滴一声，最少要有那些硬件才行？不插显卡有没有影响？
