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Critical situations of RedHatEnterprise5 system faults include grub configuration file loss, fstab partition mounting table loss, And/boot system boot directory deletion failure recovery, this article provides a recovery policy for these three situations. One Grub configuration file loss fault
explain the function of the Windows7 system Recovery option.
1 Startup Repair
Fixes some issues that may prevent Windows from starting correctly, such as missing or corrupted system files.
2 System Restore
Restore your computer system files to an earlier point in time w
"User units"A branch of China Unicom"Data Recovery failure description"Sun Fiber Storage System, the central storage of 6 pieces of 300G hard disk RAID6, divided into several lun,map to different services on the server, the server runs the Sun Solaris operating system.In normal operation, the user needs to add a new application, so an IBM server is added, then a
system database
Yes, usually the recovery sequence is Master->msdb->model.Note When restoring Master's backup: You must do it in single user mode, there are several ways
Enter single user mode:1 You can enter sqlservr-c-f-m or input sqlservr-m in command line modeWhere:-C can shorten startup time, SQL Server does not start as Windows NT service-F Start SQL Server with minimal configuration-m single-user mo
Some computers have been retrofitted to other versions of Windows 8 and need to back up the system when one key recovery is not compromised. If you are backing up directly, the reset and restore functions under Windows System will not work, as shown in the following figure:
Before performing a backup of the factory mirroring command, you need to hang
, consider using shred.So theoretically the RM deleted files can still be recovered. Deleting a file is simply releasing the index point (information nodes) that points to the block, as long as it is not overwritten and the data is actually on the hard disk, the key is to find the index point and then grab the data in the data block it refers to and save it to another partition. After using RM to delete files, the first thing we need to do is to make
Experimental project:Linux system files deleted by mistake recovery method;Host windows with Linux file sharingLab Environment:One: VMware virtual machine, Linux system RedHat6.5 (what version is not important);Two: Install the following 3 dependent packages (Please note the order!) )1 "rpm-ivh/mnt/packages/e2fsprogs-libs-1.41.12-18.el6.x86_64.rpm2 "rpm-ivh/mnt/p
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 direct
provided by the Linux core (Logical Volume Management) function. It creates a logical layer on top of the hard disk partition to facilitate system management of the hard disk partition system. Partition type in Linux: 8ePV (physical Volume) Physical volumeVG (Volume Group) volume groupLV (Logical Volume) Logical Parti
*, filen AME = ' d:\sqlsnapshotdata\smallworksdata2.ndf*) as SNAPSHOT of SmallworksObserving the file system, you can see that the size of the Smallworks snapshot data file is 10MB, as it was created (your file size may vary due to changes made to the Smallworks database), but in fact it occupies only 256KB of space, where the primary file occupies 128KB , each secondary data file occupies 64KB. SQL Server retains the same amount of
In the process of using the Windows XP operating system, we may have lost the admin password for some reason, but how to recover? Below we introduce five cool strokes can be effective recovery password:
Trick 1: You know, Windows xp password is stored in the system's win Nt\system 32\config under the Sam file, Sam file is the account password database file. When
No matter what operating system you are running, in many cases, you will face disaster recovery operations. Your main boot area is overwritten, your hard drive cannot be started, or an important file is deleted, or your display card flashes when it is started on a black screen. This article will make some technical discussions on these issues, to help you in the face of these problems, do not be unprepared.
Second, backup and restore active Directory
SCDPM2012 provides two types of system protection, bare metal Recovery (BMR), and System state recovery, and the process of recovering the operating system is the same regardless of the manner in which it is used.
Restoring a BMR
A mobile hard drive, by the IBM Mobile hard Disk box and a 20GB Toshiba notebook computer hard drive combination, after more than a year of use, accumulated some experience. Under normal circumstances, a removable hard disk is connected to a host and the system can recognize it as a removable storage device and automat
channel CH1 type disk;Allocate channel CH2 type disk;Backup incremental Level 0 database plus Archivelog Delete inputFormat '/home/oracle/rmanback/db_%d_%u 'Tag=db_inc_0;Release channel CH1;Release channel CH2;}Finished backup at 12-MAY-17I. Recovering PDB data filesWhen the database is open, all data files for the current data are checked.For System,sysaux and
and switch to the gag boot program.The gag is installed in the primary or logical partition, can boot 9 different operating systems, the configuration is simpler.
Although it is a graphical interface, most operations are still operated by the keyboard.inquisitor– Hard Drive TestTest the hard drive from time to times to solve the problem earlier. Inquisitor Live CD has a lot of modules to test various things, such as hard disk, hard
Tags: ERP software database repair Database overwrite repair data mistakenly deleted repair consistency fixERP Software database overwrite data recovery success/Reload database system software, resulting in file overwrite with same name"Data Recovery failure description"a hotel in Shanghai ERP The software was originally installed in C on the
I. System start-up
1. System Startup process
Power-on------->bios (read-only storage on motherboard) function, hardware detection, activation hardware)
Grub System boot (grub boot divided into two stages)
1) Stage 1 MBR (Master boot record) master boot record on hard disk track, one sector, 446 bytes
2) Phase 2 Grub F
Overview of the system boot process:PowerUp--bios Initialize--GRUB2 disk boot phase--grub2 file Boot phase--Specify boot partition location-boot kernel, read-only/Mount device-start init program into initialization phase-start SYSTEMD initialization process-take/etc/ systemd/file-Start program-Start the landing environment.System Startup process:I. Power-ONBIOS (in read-only storage on the motherboard, basi
Same-system inter-machine Lerman database migration, detailed explanation of Inter-server Lerman backup and recovery
Migration of Oracle RMAN from different machines in the same system, detailed explanation of Oracle RMAN backup and recovery
Environment:Source Server:VM7.14 rhel5.5-32 Oracle 11.2.0.0g172.16.3.202T
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