ultrastar hdd

The same method is used to mount 4 machines today. View the hard drive area code Fdisk-l650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/4C/34/wKiom1Q41SKzeJK9AAGEsx6hIOo415.jpg "title=" QQ picture 20141011145820.png "alt=" Wkiom1q41skzejk9aagesx6hioo415.jpg "/> to partition Fdisk/dev/sdbJust follow the default size.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/4C/34/wKiom1Q41m2xTCr6AAMHUxVB1AE562.jpg "title=" QQ picture 20141011150403.png "alt=

Shing Email: [Email protected] Blog: http://blOg.csdn.net/qifengzou Date: 2015.01.16 00:33 Reprint please indicate the CSDN blog from "Chifeng" Before the kernel is upgraded, the system can start and use normally, and when the system kernel is upgraded, the system does not start normally, this may be caused by the incompatible hard drive. can nowthroughEnter the old systemFollowThe following steps step by step to troubleshoot the cause:①, query hard disk control chip manufac

counted from 0, and the partition is counted starting from 1. The third and fourth line commands need to be noted: (Loop)/casper/vmlinuz.efi and (loop)/casper/initrd.lz These two file extensions are not necessarily the same as me, different versions have a certain difference, it is recommended to enter a portion of the TAB key to automatically complete the file name.4, wait for the restart, and then automatically enter the Ubuntu installation screen. Execute the command "sudo umount-l/isodevice

Failure phenomenon: SSD solid-state hard disk has been gradually recognized, we serve the user community has also been the use of solid-state hard disk users, but not too much knowledge of solid-state drives, so we need to use the solid-state hard disk testing, and will detect information feedback user current status. Solution: We like to use Hdtune to look at the smart information of the hard drive when we test HDD. In the SSD era, Crystaldiskinfo

The U-disk boot disk will be inserted into the USB jack of the computer with U start v5.0. (desktop computer recommended to insert the U disk directly to the computer host after the USB jack) to open the computer into the U-boot main menu, with the keyboard key to move the cursor to "07" After running the hard disk Memory detection scan Tool menu , press Return key "Enter" to confirm it, as shown in the following figure: After running the hard disk Memory detection scan Tool menu ,

of solid-state drives is much more expensive than traditional hard drives, so saving and backing up is still the preferred mechanical hard drive. 8. Does the write cache make sense for solid-state drives? If the solid-state drive supports write caching, what is the Win7 flagship version of the initiative? Some solid-state drives in addition to flash chips, the main controller, but also add a certain amount of RAM as a cache, which is modeled on the traditional hard disk to cache write. For th

: Timing buffered disk reads:422 MB in 3.01 seconds = 140.20 mb/sec [Root@oracle ~]# hdparm-t/dev/xvda /dev/xvda: Timing buffered disk reads:408 MB in 3.01 seconds = 135.59 mb/sec [Root@oracle ~]# hdparm-t/dev/xvda /dev/xvda: Timing buffered disk reads:416 MB in 3.01 seconds = 138.24 mb/sec 4, test the disk cache read Speed: The code is as follows: [Root@oracle ~]# hdparm-t/dev/xvda /dev/xvda: Timing cached reads:11154 MB in 1.98 seconds = 5633.44 mb/sec [Root@oracle ~]# hdparm-t/

Rapidboot HDD Accelerator is the acceleration of system startup. The principle of implementation for the following two aspects: 1, the System to guide the acceleration: install this software, will start the system, for the use of all the boot files, create a compressed cache file, in the boot when the cache file read into memory, reduce startup time to read hard disk frequently, The hard drive to the memory of the burden of transfer to the CP

interface, the data line first pull out, clean up the dust and then inserted. 2, if it is a notebook computer, directly unscrew the screws, plug the hard drive. Then the boot into the BIOS interface, or the Power-on interface when press pause break button to stop the screen to see if the hard drive is displayed. 3, if the BIOS interface has seen the hard drive has been connected, if the system does not go, then the system boot hard drive failed. One, take a system disk, repair system boot.

of data, but its use for the current widely considered sufficient security of 128-bit AES encryption, if the future of the computer run AES decryption instructions speed is greatly improved, then this encryption method is clearly not safe, Seagate upgrades the drive Trus technology only by upgrading the HDD firmware. Second, when the computer sleep state, the thief can steal data through the software or even drive Trus password, this is obviously not

is what the small block in Figure 1 means).So someone would guess that MySQL stored 100G of data, when users visit MySQL, the 10MB data copied to Redis, such as select a id=1000 data, then put id=10 to id=9999 data to Redis, for the next visit. But the key is that MySQL data access, not the local principle of the file, different users access is completely different things, and the order of the ID does not have any relationship.In fact, the strengths of Redis are not here, it is good at preservi

partition:Fdisk/dev/hdaNL #选择逻辑分区, if not, first create an extended partition and then add the logical partition (hard disk: up to four partitions p-p-p-p or P-P-P-E)6 #分区号 (starting from 5),/dev/hda6T 8e #分区类型8e表示LVM分区W #写入分区表Partprobe #重读分区表Mkfs–t Ext3/dev/hda6 #格式化Partx/dev/hda #查看当前硬盘的分区表及使用情况Second, the creation of PV, expansion vg,lvPvcreate/dev/hda6Vgdisplay #查看当前已经存在的VG信息, taking the existence of vg:volgroup00 as an exampleVgextend Volgroup00/dev/hda6 #扩展VolGroup00Lvdisplay #查看已经存在的LV信息

initialized with the Mkswap command, which uses the partition's device name as the parameter, and finally checks and activates the swap partition using the Swapon command. Use the Swapon command with-s to view the swap partitions that already exist on the current system.Above, the partition and initialization of the new hard disk have been completed. The next step is to modify the/etc/fstab configuration file so that the hard drive is automatically mounted each time it starts. This section can

: disklocal time is: Wed Nov 8 16:10:00 2017 Cstsmart support was: Unavailable-device lacks smart capability.=== START of READ Smart DATA Section ===error Counte R Logging not Supporteddevice does not support self Test logging#加-C parameter[Email protected] ~]# smartctl-x/dev/sdasmartctl 6.2 2017-02-27 r4394 [x86_64-linux-3.10.0-514.26.2.el7.x86_64] ( Local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org=== START of information section = =

1. View Linux hard disk information:Sudo2. Format the hard drive (to determine the file system as needed):sudo mkfs.xfs/dev/sdb3. Create/data Directorysudo mkdir /data4. Mount the partition:sudo Mount /dev/sdb/data5. View the UUID of the disk partition$sudoBlkid/dev/sda1:uuid="8048997a-16c9-447b-a209-82e4d380326e"Type="Ext4"/dev/sda5:uuid="0c5f073a-ad3f-414f-85c2-4af83f6a437f"Type="Swap"/dev/sdb1:uuid="11263962-9715-473f-9421-0b604e895aaa"Type="Ext4"/dev/sr0:label="Join Me"Type="iso9660" 6. Conf

/sblog/o3fa43621957d1f866691756848a537a7 "border=" 0 "style=" line-height:25.2000007629395px;margin:0px auto 10px;padding:0px;border:0px;text-align:center; "alt=" O3fa43621957d1f866691756848a537a7 "/>Seventh Step: point to start recovery will appear scanning the prompt, and so on after the software scan650) this.width=650; "src=" http://sucimg.itc.cn/sblog/od82c26baab66ad1878563975652db131 "border=" 0 "style=" line-height:25.2000007629395px;margin:0px auto 10px;padding:0px;border:0px;text-align:

How do you mount the U-disk (removable hard drive) to the Ubuntu system as you would a disk? The following three steps make it easy to handle:1: Open Ubuntu shell, enter: fdisk-l (to log in as root), find the corresponding U-disk mount name, as our SDB1ext =/DEV/SDB12. Set up a local directory mkdir/mnt/d to mount the U disk;3. Mount the mobile U-disk to the/MNT/DMOUNT-T ntfs/dev/sdb1/mnt/d/4. Access to the contents of the/mnt/d is the operation of the U-disk.How to mount the U-disk (mobile

the installation, partition, you need to pay attention to the choice, and choose the option to coexist with Windows (if cloning, need to modify the Grub.cfg file later, need to modify the hard disk UUID and startup letter)4, the change of the UUID method: Vim/boot/grub/grub.cfg, find the original UUID, with the new hard disk UUID to replace the original5, if you change the entire hard drive, you also need to change the ESP partition UUID6, if the installation of Ubuntu to complete, then the ESP

Caption physical memory also virtual memoryDescription description is the same as captionInstallDate Installation Date (no value)Name namesStatus stateCreationClassName Create a class name (that is, replace the name of the class)Manufacturer ManufacturersModel ModelsSKU SKU NumberSerialNumber numberThe physical memory of the TAG's unique identifierVersion informationPartNumber Part NumberOtherIdentifyingInfo Other Identifying informationPoweredon whether the power is plugged inRemovable is remov

following command:echo "uuid=ec9ab3f7-9af6-f2ec-c4ec-f22419f32464 none NTFS Rw,auto,nobrowse" | sudo tee-a/etc/fstabReplace the character following the command line uuid= with the hard drive uuid that you obtained from the previous operation, and enter the password for the account (if the password is blank, create the password first). Input password not shown but actually entered)3. Then, when you reconnect the USB device, the White box icon for the USB partition is no longer displayed on the d