how to recover data from crashed external hard drive

OverviewA unit server in Beijing accidentally offline, hot spare disk, replace the offline hard disk. However, the hot spare disk in the process, another hard drive offline, causing hot spare synchronization failed, two sets of RAID array crashes, LVM structure is incomplete, the file system is not working properly, the server

system and file data more securely. Such tools replicate meaningless files to all partitions on your hard disk, then format and install the operating system so you can safely sell or donate your computer to others. 　　Use software to remove or encrypt mobile hard drive data

(more stringent), the discovery of some database files and log file errors, the system and the Sysaux table space has more than 100 bad blocks, 3 control files are bad block many bad blocks, control files are all corrupted Eschoolspace table space of 3 files of the bad block more, up to 1000; UNDOTBS02 lost; the database engineer fixes such files,Figure One:Figure II:"Database repair Process one: Repair Database"We created the control file, created the Undo table space, and started the database

If the operation is risky, proceed with the following operations with caution: In the past, the file system format of a mobile hard disk was changed to raw format several times. You can click or view the hard disk properties to find the following points: Displays 0 bytes and raw format. The following message is displayed: "unformatted" or "file or directory structure is damaged and cannot be read "

The tendency of moving hard disks to be smaller and more bulky makes more and more sensitive data stored on them, so how to better protect the security of these data becomes a very urgent problem. When Windows Vista was first launched, Microsoft said a very large security feature added to the operating system was BitLocker, a

If centos6.5 is installed on a hard drive in win7 and does not want to overwrite data, how can this problem be solved? -- Linux general technology-Linux technology and application information. for details, refer to the following section. There are three ntfs partitions and one ext3 partition on the hard disk. Prompt wh

First Use SSH login to the Aliyun server SSH landing software I use putty baidu inside download. Then use your root account to log in. The command to modify the password is passwd How to mount the data disk as follows: The first step is to use fdisk-l to view your hard driveShows the following code is as follows copy code [root@ay1105190 13348b ~]# fdisk-l disk/dev/hda

One, these two days is disturbing, spit trough a bit:Originally very busy, careless use of nearly two years of windows8.1 system ran, very sad, because I crushed my mobile hard disk data. Two days ago my mobile hard drive loaned the company colleague, colleague back up some things, after a few days, the

will the quality increase after the U disk or hard disk is filled with materials? to answer this question, let's take a look at the storage principles of the USB flash disk and hard disk. a USB flash drive, also known as flash memory, uses flash as the storage medium. In short, flash uses a float gate to store data