, record number of sectors that are positive for errors
* These sectors are not currently readable, and if there are files using these sectors, the operating system will return read errors, the hard disk will automatically relocate the sector when the next write operation occurs, and the relocation sector count (reallocated Sector count) is increased, and this value is reduced.
ULTRADMA CRC error Count UDMA communication CRC Error, recording of CR
low-speed hub, the device may not be installed properly, as long as the connection line is replaced with a USB 2.0 standard to resolve the failure.
Attention matters
After you install the driver, you can view the removable hard drive from Device Manager, but there is no corresponding letter identifier in the resource manager, which is the result of improper system setup.
Additional computer
Test hard drive Bad Sectors in CentOS
Hard Disk status testing tools: smartctl, Badblocks, hdparm
You can quickly see whether the hard disk is healthy by using smartctl. The command is as follows:
[Root @ qy ~] # Yum installsmartmontools-y
Start SMART
# Smartctl -- smart = on -- offlineauto = on -- saveauto = on/dev/sd
built-in model, as for 17.5mm hard disk is the previous small size of the product, now basically no models adopted.
Number of RPM: Notebook hard drive is now the fastest 5400 2M cache, support DMA100 (mainstream model only 4200 to 512K cache, support DMA66), but its speed and now desktop slowest 5400 to 512K Cache hard
What if the computer doesn't read and move the hard drive?
Computer does not read mobile hard disk solution one:
1, if it is a mobile hard drive USB interface line has two interfaces can be two interface plug into the USB interface, can provide external power to the USB
access permissions for all three operating systems.
Ensure that the system meets minimum hardware and disk space requirements. BIOS settings to boot from CD/DVD see "Practical How-to" in the http://multiboot.solaris-x86.org/iv/1.html )). Then check the system to ensure that it meets the minimum requirements of all three operating systems, especially the disk space and processor type. Fedora requires a minimum processor speed of 200 MHz, 92 mb ram for graphical installation), and 6.9 GB
long time useless, and in a humid environment, causing the components on the hard drive damp, but also will appear hard drive can not detect the problem
Solution: First disconnect the power supply, and then use the hair dryer evenly to heat the hard
The hard drive jumper settings are simple, but each brand's jumper settings are not the same way. Here's a small series on the example of Seagate hard drive to say that the hard disk jumper set method. The way to set the jumper is to place the jumper position between the dat
1. Try to restore BIOS default settings
A verifying DMI Pool Data error occurs when a new hardware is replaced or if the memory read or write parameter is set incorrectly, or if the hard drive mode setting is incorrect, try to restore the BIOS defaults, or optimize the BIOS settings as appropriate.
2. Hard drive Da
no bad word).If you try to recover, do not destroy the current fault state, save the found file to another partition, determine the correct after the processing disk. It is recommended to reinstall the Mobile hard drive box, or replace a mobile hard disk box and data cable to try, if the above problem is excluded, it
moved by the HDD is USB to direct power, in some cases, due to insufficient power to the USB interface caused by the inability to read and cause hard disk damage. Recently, almost all of the mobile hard drives come with a separate external power supply or a PS2 adapter that takes power from the keyboard , and some uses a dual USB interface to power it. Therefore, we must first check the power supply proble
The Windows 10 64-bit Professional version of the operating system was reinstalled yesterday, and suddenly the mobile hard drive was unusable.When you insert a mobile hard disk, you receive the following prompt:
Mobile hard disk capacity 1T, brand memory Czech.
This problem occurs when Windows 10 is installed on the
When the hard drive is plugged into the computer, the LED is not lit and the USB interface and the interface line of the hard drive are observed, and the pins are not abnormal. Open the hard drive box, the body indicates that the
Sometimes the hard drive is in use, will suddenly "when" straight ring, and then can not continue to read and write, restart the computer again, in the BIOS can not find the hard drive. The more typical fault is just boot hard disk use normal, but when the use of one or two
Failure problem: Computer boot times wrong, the message is "Disk boot failure, INSERT SYSTEM disk and press ENTER", the hard drive data cable is not, the hard drive to someone else's host but everything is normal.
Troubleshooting: From the error message, the prompt cannot f
chip is the famous Sepras chip, set high-speed stability in one. You can transfer more than 1GB of data per minute, so you don't have to wait for the transmission of large volumes of data.
Data cable is also a factor that can not be ignored, the USB shielding layer to do a good data line, so that the transmission is stable and fast, not by the surrounding signal interference. Also some consumers in the data transmission will occur withou
Computers are often unable to start and occasionally enter the system, but will soon crash. Use anti-virus software to kill, not normal.
This situation, you can restart the computer, into the BIOS, check the hard drive parameters are correct, found that the parameters are correct, but do not recognize the hard drive
1. Use a USB flash drive in win7 to create a boot disk and install Ubuntu to a mobile hard disk, during Ubuntu installation, the boot loader under win7 is overwritten by default because it is not set to boot the loader to the mobile hard disk. As a result, Windows 7 cannot be started independently. You must insert a mobile ha
In fact, the U disk installation system can not find the hard disk, this phenomenon is likely to be hard disk mode is not set up well. So, how do you set it up? Boot into the computer motherboard BIOS, enter the method due to the different motherboard, some press F12, some press F9 or del key, if you do not know to turn on the screen at the top or the bottom of the tip.
After entering the BIOS, enter the C
Ubuntu has officially released the official version of Ubuntu 14.04 LTS and claims it is a ready version for cloud computing. This version is a good addition to the reliability, performance, and interactivity of the cloud platform and scaling environment, while providing 5 years of support and maintenance services. Below is a detailed tutorial on installing Ubuntu 14.04 in Windows 7 using the EASYBCD hard drive
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