Full resolution of disk cache write method

Cache write is very strange to many people, we do not know what this function is used, in fact, the function of cache write is very powerful, improve in windows system Method: There is a way to temporarily cache the disk, thus reducing the burden on the CPU and making full use of its efficiency! To improve the performance of the system, this technology is called "cache write", but the cache write must be opened by itself. Because the windows system is turned off by default. Let's introduce the "Cache Write" setting for everyone;

Click the menu bar to find "Device Manager", click "Disk Drive", then right click on any drive icon After the attribute appears, click on "Properties" to switch to the "Policy" tab. Here you should see two options: "Optimize for quick delete" (all things are written directly to the hard drive: it allows you to quickly disconnect the device from the computer) and "for improvement" Performance and optimization & rdquo; (write to cache). Tip: Both options are in a gray unselectable state, then the disk drive has been turned on “ write cache &

XP system write cache failure will prompt "Write cache failed (Delayed write failed )”,

The following is the reason for everyone to parse "write cache failure":

1. Disk drive itself. This situation is mostly common in SCSI, RAID drives. Some RAID driver drivers will report "Write cache failed" after installing XPSP2 system. A fake message. Workaround: Install the driver for the latest version of the disk drive.

2. The reason for the data line. Some errors or broken data lines, especially external USB lines and FireWire, can cause this. If your data cable is too long, or if the data cable is connected to a USB HUB of unqualified quality, the write cache will fail. Finally, it's probably because you have a UDMA driver that requires an 80-pin data cable, but you're using a 40-pin data cable.

3. Problems with the drive controller. I have encountered a situation where the USB controller and other hardware devices are in conflict and the write cache fails. If your system has both long and short PCI slots (64-bit and 32-bit), try unplugging the USB controller from the long PCI slot. Some older PCI cards do not support this type of slot.

4. Add a memory parity error in memory. The reason is that your new memory module does not match the memory type supported by the motherboard, or there is a problem with the memory itself.

5. The LargeSystemCache key value in the registry is incorrect. This is rare and usually occurs on machines that have an ATI display adapter with more than 521MB of memory. The registry on these machines has a key called LargeSystemCache (HKEY LOCAL MACHINE\\SYSTEMhCurrentControlSet\\Control\\Session Manager\\Memory Management). This key value is used to manage the memory capacity allocated by the system to some core processes. If the key value is set If it is 1 (this setting can enhance the performance of machines with more than 512MB of memory), it may cause data errors and write failures in some systems. If this happens, change the key value to 0.

6. SCSI termination error. Although this happens rarely on SCSI devices that use self-terminating technology, we still have to take it into account.

7. Media error. This is the most serious situation that can happen, in other words, the disk drive is broken. If you can get disk drive statistics through SMART (such as SMART & Simple) software, then you can use this information to determine the mechanical (physical) failure of the disk drive. You can also use a tool called Gibson Research's SpinRite to help you diagnose media errors, but it takes a long time to fully detect the disk drive.

8. The computer BIOS setting forces the UDMA mode to be turned on. But the drive controller does not support the UDMA mode, the consequence is that some errors occur. Mainly occurs in the newly installed UDMA mode support hardware device. Solution: Restore the hard drive option to the default mode (automatic detection) in the BIOS or upgrade the BIOS to solve this problem.

Now everyone should be aware of the role of this function, if you want to use the cache write, you should take a good look at the setup method. If you find the problem that cannot be written, of course, there are also mentioned in the tutorial. Everyone also looks at it.