spa122 ata

05 the computer we purchased is still using the residual heat, but the system speed is surprisingly slow. The hard disk read/write speed detected today is less than 2 Mb/s, which is unacceptable. It is no wonder that the hard disk is set to Pio mode. Use the following methods to solve the problem: 1. Right-click my computer on the desktop and choose Properties> hardware> Device Manager ". 2. Expand the "Ide ATA/atapi controller" node and double-click

How to view the hard drive brand model and other details of CentOS First, use the smartctl -- all/dev/sda command to check the hard disk information. This command comes with CentOS. The result may be as follows: Smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-358.el6.x86_64] (local build)Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net=== Start of information section ====Device Model: WDC WD20EZRX-00DC0B0Serial Number: WD-WMC301111333Lu wwn Device Id: 5 0014ee 60111

2011-10-20 r3458 [i686-linux-2.6.18-194.el5PAE] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net SMART Health Status: OK [Root @ localhost ~] # Smartctl-H/dev/sda Smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-358.el6.x86_64] (local build) Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net === Start of read smart data section ==== Smart status return: incomplete response, ATA out

How to add a new hard disk without shutting down a Linux Server Method 1: 1. After the disk is inserted, run echo "---">/sys/class/scsi_host/host0/scan 2. Check whether the command in step 1 takes effect. You can verify it in/var/log/messages. 3. Run the fdisk-l command to check whether the new disk can be seen. If not, replace host0 with host1 or host2 and try again. Method 2: 1. Insert the disk, run the/proc/scsi directory, and then less./scsi to check the current SCSI disk usage. Root @ deb

Back up data before modifying the registry. In the past, we often used "fragment" to make windows run faster. however, the 7200 RPM hard drive sold on the market has been improved in the aspect of seek and transmission. Many models also come with an 8 m cache, in addition, the NTFS file system used by WINXP is more efficient than the fat system. Therefore, the effect of "fragment" on improving computer performance is very limited. Here are 23 practical tips that can greatly improve the compute

will affect the performance during the reconstruction, A long time means that the possibility of data corruption becomes greater. Data security protection: If a disk in raid10 is invalid, data loss occurs only when the corresponding image disk of the disk fails. No data loss occurs when other disks become invalid. If a disk in RAID5 is invalid, any failure of the disk will cause data loss. In summary, raid10 and RAID5 will take longer than raid10 to reconstruct Data after a disk becomes inv

Text message sending and receiving Problems Based on sim300 and S3C2410-3 The most important thing about organizing at commands and applications is not in this command, but serial port operations. The serial port is really great... I think... Next, the AT command in the previous article, which is shown in the following table: Execute commands Description Feedback AT

= "wkiom1prbxtzenloaakq3x7thbm110.jpg"/> Sata is short for Serial ATA, that is, Serial ATA. This is a new type of hard disk interface that is completely different from parallel ata. It is named after serial transmission of data. The SATA bus uses embedded clock signals and provides better error correction capabilities. The biggest difference from the past is

", go to the partition where the file Pagefile. sys is located on the Virtual Memory Page, and run "del Pagefile. sys "command to delete the page file, and then execute" chkdsk "in the partition where the page file is located /R "command; reset the virtual memory after entering Windows. if you encounter this blue screen while surfing the Internet, and you are downloading and uploading a large amount of data (such as online games and BT downloads ), The NIC driver problem should be solved, and th

Linux server does not shut down new hard disk method, linux new Method 1: 1. After the disk is inserted, run echo "---">/sys/class/scsi_host/host0/scan 2. Check whether the command in step 1 takes effect. You can verify it in/var/log/messages. 3. Run the fdisk-l command to check whether the new disk can be seen. If not, replace host0 with host1 or host2 and try again. Method 2: 1. Insert the disk, run the/proc/scsi directory, and then less./scsi to check the current SCSI disk usage. Root @ de

is tty. It also sets a special device file name: % K. In this example, % k indicates the kernel name of the device. This means that the kernel identifies the names of these devices and creates the file names.* The KERNEL = "scd [0-9] *" starting from line 3 indicates the SCSI CD-ROM driver. It creates a pair of device symbolic connections: cdrom and cdrom-% k.* In the fourth line, the starting KERNEL = "hd [a-z]" indicates the ata cdrom Drive. This r

How to view the hard drive brand model and other details, CentOS brand model First, use the smartctl -- all/dev/sda command to check the hard disk information. This command comes with CentOS. The result may be as follows: Smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-358.el6.x86_64] (local build)Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net=== Start of information section ====Device Model: WDC WD20EZRX-00DC0B0Serial Number: WD-WMC301111333Lu wwn Device Id: 5 00

) function calls init/main. the init () function in c will create two new kernel threads, dbflush and kswapd, in the init () function. Initialize the tty1 device. Find/etc/init or/sbin/init or/bin/init to create an init process. The Init process checks the file system according to the/etc/inittab file, starts the system daemon process, establishes the getty process for the online terminal, and executes the command file under/etc/rc. After that, getty will display a login prompt on the terminal t

size of the sample n=0, then we think s2=x=0. For example, we want to count the DNA sequence ' atatata ':1. For the tri-nucleotide acid number. L1:ata, L2:tat, L3:ata, L4:tat, L5:ata.2. (L1,L3) =2, (L1,L5) =4, (L3,L5) =2, (L2,L4) =2. So the sample data is 2,4,2,2.3. Sample Data average x= (2+4+2+2)/4=2.5.Variance s2=[(2-2.5) (4-2.5) (2-2.5), (2-2.5) 2]/4=0.75.gi

provided by the installation mechanism (Installation protocol)2. Remote File Access Protocol (NFS protocol)11.9.2 Installation ProtocolInstallation Protocol (Mount protocol): establishes an initial logical link between the client and the server.12th 12.1 Large-capacity memory structure Introduction to the mass storage structure 12.1.1 diskdisks (magnetic disk): Provides a large-capacity external memory for modern computer systems.A disk drive is connected to a computer through a set of lines ca

the recorder can be identified, you do not need to execute-scanbus.In centos5, an error is reported when you execute cdrecord-scanbus.Use the following command:Cdrecord dev = ATA-scanbus to output the device list and ID correctlyThe optical drive is ATA:, 0, and so on.B. the/dev/cdwriter-hdc is automatically identified by centos5 on the device name.If it is not identified, change it to dev =

In Linux, check whether it is a solid state drive (SSD). Recently, we are preparing to test it. we need to check which machines are attached with an ssd hard drive. Google has seen many methods, but they are all in the dark, I don't know how to determine. Ssd hard drive seems to use the scsi interface, so it is determined by the drive letter name... in Linux, check whether it is a solid state drive (SSD). Recently, we are preparing to test it. we need to check which machines are attached with an

The following switch from Baidu:Recently in preparation for testing, you need to see which machines are mounted SSD hard drives, Google has seen a lot of methods, but all foggy, do not know how to determine. SSD hard disk seems to use the SCSI interface, so according to the name of the drive letter is not to be judged. The last group of Eric God told LSSCSI Tools, try it, very simple, the display is also very direct, share a bit. Nonsense not much to say, direct and result as follows:[[Email pro

Today, we found that for each syntax can be directly compiled through, and previously thought that only open the/clr to support. Check the information found that Ms from VS2005 has been supported. Although not conform to the standard but it is really convenient ah, it must be recorded.See here, has already been introduced. Http://www.codeproject.com/Tips/76166/For-each-loop-in-Native-CSince Visual Studio2005, native C + + has had a ' forEach ' loop construct, like C # or Java. Unfortunately it i

This article mainly introduces the Ruby connection using Windows SQL Server database code instance, this article directly gives the implementation code, and gives two implementations and Access database implementation code, the need for friends can refer to the ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 This is the require ' win32ole ' class SQL Server # This class manages database connection and queries Attr_accessor:connection ,:d