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
What to do if the BIOS does not recognize the hard drive:
In the first case, the most likely data cable is not plugged in or there is a problem with the data cable. Or the power supply problem, the hard drive is supplied directly from the power supply interface to obtain power.
The white is the traditiona
How do I transfer data from a laptop to a new hard drive?
Tools/raw Materials
Ghost
Method/Step
First, prepare a removable hard drive box to load the new hard drive into the removable har
formatted hard drive. The software can recover a hard disk larger than 8.4GB and supports long file names. Damaged hard drives like missing boot records, BIOS parameter blocks, partition tables, FAT tables, boot areas, and so on can be recovered by it.
Software evaluation
The software scans the
Installation system can not find a hard drive solution
First of all, we find the reason from the periphery, a hard drive to work first must have a power supply, there is an IDE line with the motherboard.
Therefore, do not recognize the hard
Centos 7 mounts a raid 10 hard drive to the Dell R730 Server
The company purchased a new Dell R730 server with two SAS hard disks and four SATA hard disks respectively. SAS hard disks constitute RAID 1 and
Usually in the use of computers, often in the taskbar "Safe removal of hardware" appears in the removal of hard drive c,d,e,f and optical drive, this tutorial to provide you with solutions.
Failure phenomenon:
The taskbar "Safely Remove Hardware" appears in the delete hard drive
First of all, your hard drive is larger than 200G, and is stat hard drive, because most u disk PE system on stat hard disk support is not very good, so the situation will occur, the solution is as follows:
1, first after inserting a U disk, boot into the BIOS to modify the
Settings \ Administrator \ Local Settings \ Temp" directory in Windows. Pai_^7. Set the "mount point" by yourself"In Windows, we can use "create folder" to store a class of things, of course, in Linux. In addition to this method, you can also set a "mount point" when "Partitioning" (in fact, the function is equivalent to setting up a special place to store special things ")There are many others. I will not elaborate on them one by one. The following figure shows the functions of various folders
\ Administrator \ Local Settings \ Temp" directory in windows. Pai_^7. Set the "mount point" by yourself"In Windows, we can use "create folder" to store a class of things, of course, in Linux. In addition to this method, you can also set a "mount point" when "Partitioning" (in fact, the function is equivalent to setting up a special place to store special things ")
There are many others. I will not elaborate on them one by one. The following figure shows the functions of various folders and st
effectively.
AHCI technology requires both hard disk and motherboard support. For the hard drive, the AHCI 1.0 product is not fully supported, but some of the hard drives already support the NCQ feature and can be implemented with a motherboard that supports AHCI.
Motherboard, in the Lenovo part of the BIOS, you can
Introduction to Interfaces
IDE interface
(Integrated-drive-electronics) is now commonly used external interface, mainly connected to the hard disk and optical drive. Using 16-bit data parallel transmission mode, small size, fast data transmission. An IDE interface can only receive two external devices.
The IDE's English is all called "Integrated
Enable the ahci hard drive mode for the XP system (solve the Dell blue screen problem 0x0000007b)
After the XP system is installed in IDE or ATA mode,Enable ahci ModeThe blue screen will be turned on (Blue ScreenCode0x0000007b), Load the ahci driver in XP to enable the ahci option in BIOS to achieve the best performance of the hard disk.
First download the
$ HDD)
/****** Change " HDD" to "/dev/sda "*******/
Windows:
Run Everest or other detection software to view the SMART Information of the hard disk, including the Load/Unload Cycle count.
If the Count grows fast, you will be lucky.
According to replies from the community, this problem is common, with the highest number of reports reported by Dell migration and IBM/Lenovo Thinkpad.
I have different opinions on the cause of this problem. The following
I believe that many of the use of the U-disk system friends encountered after entering the PE system can not find the computer hard disk, why this problem? When this problem arises, how can we solve it? This question small compilation teaches everybody how solves enters the PE system to be unable to find the computer hard disk question.
Problem Reason:
When entering the PE system because the computer
Many families are now in the mainstream configuration a few years ago, in contrast to today's mainstream configuration, it is not polite to say that the gap between the old cattle carts and cars, especially in the face of the 14 Microsoft will completely abandon XP dilemma, we have to run a smooth XP system to upgrade to a higher version of the Win7 system, This upgrade only found that the computer configuration is completely inadequate, small make up the computer is 07 years time to buy, change
, but Lenovo to the solid state drive, whether you can understand this problem.
Although the desktop can use a notebook hard disk, in turn, the notebook is not able to use the 3.5-inch standard desktop hard disk, because the internal space of the notebook is limited, the hard disk size is designed for 2.5-inch small
Summary of processing process
1. After changing the bad hard disk, the system recognizes the primary, the original main disk is invalid, if the replacement of the old disk will be inserted into the system will cause confusion, resulting in the system, dial out is useless.
2.smart error does not prompt, this time is using the System test program (boot F10) that measured out the error.
3. Two hard drives o
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
syntax:hdparm [-CFGHIIQTTVYYZ] [-a Supplemental Note:Hdparm can detect, display and set parameters for IDE or SCSI hard drives.Parameters:-a-a-C-C detects the power management mode of the IDE hard drive.-dDiskDMA mode.-F writes the memory buffer's data to the hard disk, and the buffer is clear.-G Displays the magnetic
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