how to wipe hdd

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1. First look at how many drives are on the machine:$ fdisk-l2. Hard disk Partitioning$ FDISK/DEV/SDDN->p->1-> Enter, enterIt means creating a new primary partition, the size of which is the entire SDD diskLast execute W, write to diskThe disk is now partitioned, but there is no file system, and the disk is still unavailableOnly one partition can be partitioned at a time, and multiple partitions need to be added multiple times.3. Format the disk and write to the file system$ mkfs.ext4/dev/sdd1Wa

, open the need for a certain method, because the DOS command is not familiar with, so the use of another: My Computer--Properties--advanced--The third "settings"--edit, you can modify Boot. ini file, add an entry at the end: C:/grldr=centos, save it.5, now we restart the computer, in the boot time will be a more centos, we choose CentOS into grub (what is not very clear), and then we select the Linux install via the arrow key (the full name does not remember), then will appear gurb> we are in A

Yesterday, the data on one machine was transferred (backed up) to another machine, and it took almost one night to transmit about 100G of data.Feel the data source machine hard drive is getting worse, read and write performance degradation is very bad.These years to write software is seldom to consider the hard disk read and write performance optimization, today online search for some information, looked, some harvest.How do I quickly reserve a large space on a disk for a file?Write files to dis

removing the motherboard)Six, remove the hard driveby Figure 6 shown, flip the bottom of the motherboard finally see the main character of this article hard disk, only need to be red labeled two fixed hard drive screw off, you can very light to the damaged hard drive to replace. (Figure 6 Remove the drive)Written in the back of after a series of toss, will eventually damage the hard drive replaced down, the next thing is to follow the steps to install, here is not table. There are two points:

| dell| dell| dell|dell| ibm|ibm| ibm| IBm) if[-f "/opt/megaraid/megacli/megacli64"];thenCHECK_RAID_STATUS_IBM_DELL () {/ opt/megaraid/megacli/megacli64-ldpdinfo-a0|grep-e "(Media Errorcount:|othererrorcount:) "|awk-F: {sum1+=$2} ENDNBSP;{PRINTNBSP;SUM1} ' }TEST_DELL_COMMAND () {/opt/megaraid/megacli/megacli64-ldpdinfo -a0>>/dev/nullecho$?} elsecheck_raid_status_ibm_dell () {MegaCli-LdPdInfo-a0| grep-e "(mediaerrorcount:|othererrorcount:)" |awk-F: ' {sum1+=$2}end{printsum1} ' }TEST_DELL_COMMAND

The exFAT file format is the only file format that can be used under OSX, Win7, and Ubuntu systems, which can be supported by OSX and Win7 native, and supports files above 4G, but Ubuntu cannot directly support exFAT due to copyright issues, So when inserting this format to move the hard disk will be prompted to mount, at this time can be resolved by the following methods:sudo add-apt-repository ppa:relan/exfatJoin the new PPAsudo apt-get update升级系统sudo apt-get install exfat-utils fuse-exfatInst

--Disk identification. This property can be used to identify a shared resource. Size--Disk sizes Status--The current state of the object. StatusInfo--Status of logical devices Systemcreationclassname-The value of the CreationClassName property of the scope computer. SystemName--System name Totalcylinders--The total number of cylinders on the physical disk drive. The value may not be accurate Totalheads--The total number of heads on the disk drive. The value may not be accurate. T

C # reading computer CPU and HDD Information Public String getcpuinfo () // read CPU Information{Managementclass mobj = new managementclass ("win32_processor ");Managementobjectcollection MOC = mobj. getinstances ();Foreach (managementobject Mo in MoC){Return Mo. properties ["processorid"]. value. tostring ();}Return "";}Public String gethddinfo () // read hard disk Information{Managementclass mobj = new managementclass ("win32_physicalmedia ");Manag

->next->Next; thePk1->prior=pk1->prior->Prior; the +P1=pend->Prior; -pk->next=Pend; thePk->prior=P1;Bayip1->next=PK; thePend->prior=PK; the } - Else - { thescanf"%d%d",k,d); the thePk=mp[k]->Next; thePk_1=pk->Prior; -Pk1=pk->Next; thePk_1->next=pk_1->next->Next; thePk1->prior=pk1->prior->Prior; the 94P1=mp[d]->Next; theP2=p1->Next; thepk->next=P2; thePk->prior=P1;98p1->next=PK; AboutP2->prior=PK; - }101 //printf ("Step%d has been comp

Attribute 0 bytes Indicates that the file system structure of this disk is corrupted. In peacetime if the data is not important, then the direct format can be used. But sometimes the data inside is very important, then you have to restore the data before formatting. Specific recovery methods can be seen in the body (non-formatted recovery method)Tools/Software: AuroradatarecoveryStep 1: First Baidu Search and download the program opens, directly double-click the partition to be recovered, then u

detected in writingUsing the Hdparm testTest drive Read and write speed# HDPARM-TT/DEV/SDA/DEV/SDA:Timing Cached reads:1918 MB in 2.00 seconds = 959.62 mb/secTiming buffered disk reads:184 MB in 3.00 seconds = 61.26 mb/secHdparm can detect, display and set parameters of IDE or SCSI hard disk.Grammar:Hdparm [-cfghiiqttvyyz][-a -aReference to: http://hi.baidu.com/dmkj2008/blog/item/df3b031bb514abc1ac6e757f.htmlHttp://smartmontools.sourceforge.net/man/smartd.conf.5.htmlHttp://www.bsdlover.cn/html/

Virtual machine new hard drive mounted to file under notes:Df-h--View current file system InformationFdisk-l--View Current disk device (partition) Letter InformationFDISK/DEV/VDB--Using FDISK to manage new devices================= Creating a partition =============# FDISK/DEV/VDB--Go to Disk ManagementCommand (M for help): N--New partitionCommand ActionE ExtendedP primary partition (1-4)P--Extend or primary partitionPartition number (1-4): 1--the partition ordinal primary partition can only have

protected]:~# cd/home[Email protected]:/home# mkdir Work[Email protected]:/home# mount/dev/sdb work//mount the hard drive to the work directory.[Email protected]:/home# CD work[Email protected]:/home/work# lsLost+found4.Check the Mount status with the DF command[Email protected]:~# DFFilesystem 1k-blocks used Available use% mounted on/DEV/SDA1 7913216 7803524 0 100%/Varrun 257788 257548 1%/var/runVarlock 257788 0 257788 0%/var/lockUdev 257788 257740 1%/devDevshm 257788 257744 1%/DEV/SHMLRM 2577

from time to time on the black screen, to adapt to the resolution, Division is a slightly longer time to install the system. When prompted to restart, but very happy.But the restart was complete, Md. Boot time without the boot of Ubuntu, or only XP and a installubuntu option, in the installation of the system I pay attention to/boot this partition, give the space is not less than 512, I remember to do a This operation, there is an article said, Go to the installation page via Installubuntu and

Today came a server after the raid has left 3T, according to the previous method, the last left about 2.4T points to data, after the system installation is complete,[Email protected] ~]# df-hFilesystem Size used Avail use% mounted on/DEV/SDA1 97G 464M 91G 1%/Tmpfs 32G 0 32G 0%/dev/shm/dev/sda2 97G 3.4G 88G 4%/usr/dev/sda3 97G 295M 91G 1%/varDid not find/data directory, but/dev found the Sd5, the original EXT4 does not support more than 2T of space, the last online search methods have two ways to

0Auto:the file system type (ext3, iso9660, etc) it detected automatically. Usually works. Used for removable devices (CD/DVD, floppy drives, or Usb/flash drives) as the file system may vary on thesedevices.(4) Mount optionRules are those that are attached to a mount. Here are a few common examples:Auto-mount Automatic bootDefault sets the mount definition according to the default values of most permanent file systemsNoauto boot does not mount automaticallyNouser only super users can mountRO mou

be If you are installing a dual system and Windows is installed, the/partition type select Primary or logical, other partitions select logical logical partition. ）4. Enter the size of the new partition (in megabytes) after new partition size in megabytes.5. Location for the new partition select the position of the fresh partition (you want the new partition to be built on the first or the end of the available space, and the general default is to "start" on a unified selection).6, after "use as"

again;2, when the user selects, remind the user to confirm that the next operation may damage the data, and ask the user to confirm, if the user chooses Y to continue, otherwise let the user re-select;3. Erase all partitions on the hard drive (prompt, erase all partitions and perform the Sync command, and let the script sleep for 3 secondsAfter the clock is partitioned), and create three primary partitions for it, the first is 20M, the second is 512M, the third is not 128M, and the third is the

assignments (spents 65 minutes)1) Add a 15G SCSI hard disk before opening the Linux system2) Turn on the system, right click on the desktop, open the terminal3) for the newly added hard disk partition, a primary partition size of 5G, the remaining space to the extended partition, on the extended partition divided 1 logical partitions, the size of 5G4) format primary partition as EXT3 system5) Set logical partition to swap partition6) enable the Swap partition for the previous step7) View the st