how to defrag ssd

My ThinkPad t430 has installed two systems, win7+ubuntu11.10. Due to the needs of the project, 11.10 systems and related environments need to be retained, but also want to install ubuntu12.04, the original hard disk capacity is tight, so bought a 120GB mSATA interface SSD, installed on its ubuntu12.04 64bit, during which encountered a lot of problems.1, new SSD identification problem. Installed on the

Recently bought a 256GB SSD SSD, want to test the write speed, so the following operation.Part of the code:1Gettimeofday (start, NULL);2 intFD = open ("Test1.dat", o_rdwr|o_creat);3 if(FD 0){4printf"Open error!\n");5 return 0;6 }7 //Lseek (FD, 0, seek_set);8 Write (FD, PData, Data_len);9 Close (FD);TenGettimeofday (end, NULL); One A //display elapsed time in US -diff =1000000* (END.TV_S

Last October, Apple updated its newest Mac mini, the new Mac Mini is still a very attractive device for some consumers seeking micro-desktop systems, but its 5400-rpm mechanical hard drive has been hit by a lot of users, and in today's SSDs, the SSD is king. The disadvantage of the mechanical hard drive restricts the Mac mini user experience, but don't worry. Today, PC6 Apple net small make up for you to bring a netizen to provide 2014 of the Mac mini

The boss's SSD is broken, I first hang the hard drive on the Win7 PC, make the SSD as slave disk. Then download the Intel SSD Toolbox tool. Click "Erase", pop up the problem box said "hard disk is frozen" status, cannot be erased. You need to unplug and reseat the power cable to the hard drive. The key is here. I unplugged and plugged in the software or prompted

Test environmentOperating system: CentOS7.2.1511 64-bitmysql:mysql5.7.12 64-bitHDD: SSD, HDDTest tool: sysbench0.5Installing sysbench0.5Updating and installing dependent packagesgit clone https://github.com/akopytov/sysbench cd sysbench./autogen.sh# with-mysql-includes Specify MySQL installation directory# WITH-MYSQL-LIBS Specifies the directory where MySQL Lib resides./configure--with-mysql-includes=/usr/local/mysql/include/--with-mysql-libs=/usr/loc

Prerequisite: Prepare the U disk, do a good start disk (Chinese cabbage, u start, old peaches, etc.), win7ghost system files, computer.One: BIOS, SATA settings in Advanced settings: Ahci\ide: set to AHCI; 注：AHCI需要高级内核，如果进入PE，不能读取到SSD，则设置成IDE模式，并开启Legacy；Second: Enter Pe,diskgenius formatted disk; format after partition; 注：分区要至少分成两个区，一般情况，是分为一个主分区，一个扩展分区，扩展分区分成一个或多个盘符。Three: Modify the disk mode: Select the C drive (that is, to install the system

Problem Description:You have an SSD on hand and want to LLF (Low level Format). But the LLF tool displays: Media is write protected.Solution:1. Enter DiskPart as an administrator at the command prompt.2. Find this SSD3. View its property information4. Clear Properties5. Exit Diskpart C:\users\jimshu>diskpartMicrosoft DiskPart version 6.1.7601Copyright (C) 1999-2008 Microsoft Corporation.On computer:d305872Diskpart> list DiskDisk # # # Sta

The main selling points of vultr are: SSD hard drive, ultra-low price, 13 data centers around the world, 10 Gb server bandwidth, 3 GHz CPU, and excellent performance. For detailed evaluation of vultr VPs, refer to this article. The following is the test IP address officially provided by vutlr VPS: 173.199.82.214 (Japan) 108.61.234.91 (LA) 108.61.233.46 (Seattle) 108.61.238.74 (Chicago) 66.55.149.246 (New York) 108.61.239.230 (Dallas) 108.61.236.20

Article title: Ubuntu + SSD5 seconds to start. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. We know that Ubuntu 9.10 has made improvements in startup, hoping to shorten the startup time to 10 seconds. in the SSD state, the problem may be solved in 5 seconds. The Canonical developer Jorge Castro demonstrated th

-state drive is very curious, and then went back to study, and then found a method, said to be able to optimize the solid-state drive, better use of space, this study, did not think of the SSD accidentally to format, the most depressing is that I also installed in a number of working documents, What can I do about it?Fortunately, there are many existing online solutions, not a few minutes to find this top-notch data recovery software , very real softw

pre-conditions:1. InstallationLSI's megacli package Megacli642. query tool for installing SCSI devices LSSCSI Apt-get Install LSSCSIsteps:1. Find the drive letter according to OsdidCeph-disk List |Grep-a 1-b 1 osd.0 | Egrep "^/dev/sd*\b" |cut-d ': '-f1 2. Find the device based on the drive letterTarget IDLsscsi | grep/dev/sdd | awk ' {print $} ' | cut-d ': '-f33. Determine if the disk is a SAS disk perform the following command to return 2./megacli-ldpdinfo-aall | Grep-a "Target id:3" |egrep ' (

Make preparations What should I do if the system runs fast? Group raid? SSD solid state drive? No, these are all tricks. The method to be introduced today is almost ready for Windows XP to be started in an instant.ProgramLike Fei -- that is to put Windows XP into memory!What should I do if the system runs fast? Group raid? SSD solid state drive? No, these are all tricks. The method to be introduced today

Reference: http://blog.csdn.net/tianlesoftware/article/details/6009110The main types of hard disk interfaces currently available are IDE, SATA, SCSI, SAS, FC, and so on.The IDE is commonly known as the port, SATA is commonly known as the serial port, both of the hard disk is the PC and low-end server common hard disk.SCSI is the abbreviation for "Small computer system dedicated interface", which is the hard disk with this interface.SAS is the SCSI interface of the serial port. The general server

that the accuracy rate of YOLO in detecting small targets is about 8~10% than R-CNN, and the accuracy rate is higher than r-cnn in the detection of large targets. The accuracy of Fast-r-cnn+yolo is the highest, and the accuracy rate is 2.3% higher than that of FAST-R-CNN.5.4 SummaryYolo is a convolutional neural network that supports end-to-end training and testing, and can detect and recognize multiple targets in images under the premise of guaranteeing certain accuracy.6.

MethodMethod 1: By viewing/sys/block/sda/queue/rotationalWith Cat/sys/block/sda/queue/rotational, the return value of 0 is SSD, and 1 is HDD.Method 2: View by LSSCSILsscsi-list SCSI devices (or hosts) and their attributesInstanceHDD[[email protected] thatsit]# cat/sys/block/sda/queue/rotational1[[email protected] thatsit]# lsscsi[0:0:32:0] Enclosu DP bp12g+ 1.00-[0:2:0:0] Disk DELL PERC H310 2.12/dev/sda[[email protected] thatsit]#Ssds[[email protecte

Design division, Knut Grimsrud said the SATA3.0 transmission rate was 6Gbps. Now seven years later, the speed of solid-state hard disk has changed dramatically, many excellent SSD read and write speed has reached 550mb/s, this is already the limit speed of SATA3 interface, so many manufacturers choose to develop new interface solid-state hard disk. u.2 The U.2 interface, formerly called SFF-8639, is driven by Intel single-handedly. Ess