managing disk drives and file systems

... control and/ or protection circuitry with power handling capability of supplying A and withstanding at least 100 V With the current 22 Neural and Fuzzy Logic Control of Drives and Power Systems ... logic, electric machines and drives, power systems and VHDL and forms a basic guide for the understanding of the fundamental principles of modern power electronic control systems design To be expert ... control, industrial and process control, robotics, navigational systems and radar and building energy management and control systems With advances in VLSI (very large scale integration) and denser packing...

Ngày tải lên: 18/04/2014, 12:29

Ngày tải lên: 01/06/2016, 09:55

... to file handling" FCB Method 0FH Open file 14H Sequential reading 15H Sequential writing 16H Create file 21H Random reading 22H Random writing Handles 3CH Create file 3DH Open file 3EH Close file ... reading and writing The 21H function and the 22H function of the 21H interruption are the ones in charge of realizing the random readings and writings respectively The random register number and ... fields of the actual block and register of an opened FCB and places the information on the DTA, Disk Transfer Area 22H FUNCTION Use: To write in an random manner an FCB file Call registers: AH =...

Ngày tải lên: 06/10/2013, 20:20

... -brw-rw -brw-rw -brw-rw -brw-rw root root root disk disk disk 3, 3, 3, Aug 31 Aug 31 10 Aug 31 2002 hda 2002 hda1 2002 hda10 1 1 disk disk disk disk disk 3, 3, 3, 3, 3, 28 29 30 31 2002 2002 2002 ... major and minor device number Delete the device file What happens to that session? Log out of the session Now what happens? Recreate the device file Devices, Partitions and File systems Device files ... that the file system decides how to use the disk, how to find data and where to store information about what is on the disk Bypassing the file system and writing directly to the device file is...

Ngày tải lên: 19/10/2013, 02:20

... of file system Local file systems on hard disk are always ufs, and file systems on CD-ROM are cd9660 Remote file systems are always nfs Specify swap partitions with swap, and the proc file system ... print data and anonymous ftp Temporary files File system types FreeBSD supports a number of file system types The most important are: • UFS is the UNIX File System.1 All native disk file systems are ... File System, a means of sharing file systems across a network We’ll look at it in Chapter 25 • FreeBSD supports a number of file systems from other popular operating systems You mount the file systems...

Ngày tải lên: 22/10/2013, 19:15

... removing duplicates, and handling and merging temporary files DDTS and Mermaid take this approach It results in a further reduction in communication and GDM workload Rusinkiewicz and Czejdo [1987] ... C, and the mappings from schema A to schemas B and C, the command decomposer uses the commands expressed using the schema A objects to generate the commands using the objects in schemas B and ... that will convert commands expressed in the FDBS’s internal language to the commands that can be processed by the file system l 215 Both migration and extension of file systems are expensive...

Ngày tải lên: 20/02/2014, 05:21

... SECTION File Basics C File Names and Extensions File Directories and Folders File Formats Chapter 4: Operating Systems and File Management 21 File Names and Extensions You must adhere to file- naming ... data files and program files Chapter 4: Operating Systems and File Management 35 File Management Tips Don’t store files in the root directory Access files from the hard disk Accessing files ... Operating Systems and File Management 39 Physical File Storage Deleting a file changes the status of that file s clusters to empty and removes the file name from the index file – The file s data...

Ngày tải lên: 06/03/2014, 09:21

... Application to Hard Disk Drive Servo Systems 4.1 Hard Disk Drive Servo Design 4.1.1 Hard Disk Drive Components 4.1.2 Servo Algorithm in Hard Disk Drive 4.2 Problem ... optimization problem is solved, and it depends only on the number of design parameters, accuracy and confidence On the other hand, if accuracy and confidence are very small, and the number of design parameters ... Randomized Algorithms for Control of Uncertain Systems with Application to Hard Disk Drives Mohammadreza Chamanbaz B.Sc., Shiraz University...

Ngày tải lên: 09/09/2015, 11:33

... Problems Related to Spindle Motors in Hard Disk Drives 1.3 Performance Evaluations and Design Optimization of Spindle Motors 12 1.4 Hard Disk Drives and Permanent Magnet Brushless DC Motors ... Hard Disk Drives and Permanent Magnet Brushless DC Motors Due to the rapid development of computer technologies and microelectronics, the demand for higher processing speed, larger memory size and ... performance hard disk drives has been size reduction, capacity increase, and cost reduction In terms of the storage capacity, reliability and other characteristics, hard disk drives have been...

Ngày tải lên: 15/09/2015, 22:03

... 1.8-inch and 1.3-inch The smallest disk drives are of size inch and 0.85 inch which were designed for personal mobile information devices and systems Comparing the Kb/in2 areal density of the disk drives ... surface of the disk As the introduction of mini and micro computer technology, the disk size used in disk drives was shrunk from 24 inch diameter in 1950s, to ~ 12 inch in 1960s and 1970s, and 5.25 ... 3.5-inch rigid disk drive in 1983 The 3.5-inch form factor hard drives quickly became the most popular standard for desktop and portable systems It has come a long way since those days, and worked...

Ngày tải lên: 05/10/2015, 22:15

... Hệ thống file dựa log phiên cách tiếp cận log -disk: Dữ liệu không viết lại lên đích gốc đĩa; thay vào đó, hệ thống file lưu vết nơi khối viết log -disk, hoàn lại chúng từ vị trí Log -disk "cô đặc" ... cận để ánh xạ CSDL đến file sử dụng số file, lưu trữ mẩu tin thuộc độ dài cố định vào file cho Một cách khác cấu trúc file cho ta điều tiết nhiều độ dài cho mẩu tin Các file mẩu tin độ dài cố ... chức file đống (Heap File Organization) Trong tổ chức này, mẩu tin lưu trữ nơi file, có không gian cho Không có thứ tự mẩu tin Một file cho quan hệ • Tổ chức file ( Sequential File Organization)...

Ngày tải lên: 15/09/2012, 09:38

... /dev/mapper/datavg-sharelv) Managing Disk Space with LVM Pages: 1, 2, 3, Selecting Filesystems Now that the devices are created, the next step is to put filesystems on them However, there are many types of filesystems ... extreme numbers of files, extremely large files, and/ or the need to resize your filesystems, the following filesystems are well worth considering For large numbers of small files, ReiserFS is ... remount filesystems, or reboot Managing Disk Space with LVM Pages: 1, 2, 3, Network Access of Files A file server isn't much use if you can't get files off of it There are many ways to serve files,...

Ngày tải lên: 18/09/2012, 10:13

... Short-term and Heavy rainy, SDG: Short-term and Drainage, LSD: Long-term and Stagnant, LHT: Long-term and Heavy rainy, LMK: Long-term and Monsoon flood, PDL: Persistent and Drainage, PHS: Persistent and ... supply and (c) sanitation systems and attitudes for (d) water treatment at home, (e) children’s defecation habits and (f) hygiene practices Note: Communities code name, SRM: Short-term and Rainy, ... LHT LMK PDL PHS PSM NCD Hand washing with soap before eating Hand washing without soap before eating No hand washing before eating Hand washing after defecation with soap Hand washing after defecation...

Ngày tải lên: 05/09/2013, 10:15

... management and pollution controls Contamination of raw water source Implement and enforce water and land protection zones Water stress/ insufficient water allocation Study water yields; draft and conclude ... include blower and oxidation ditch, pump and trickling filter, and clarifier Based on the literature review, specifications, operating time, and capacity, it was estimated that blower and oxidation ... efficiency and renewable investments Conclusions and future work This research evaluates the relationship between environmental and energy factors and explores the value in tracking energy and environmental...

Ngày tải lên: 05/09/2013, 15:28

... Cài đặt boot loader LILO: - Cài đặt boot loader LILO - Tìm hiểu file cấu hình lilo.conf: man lilo.conf So sánh file cấu hình với file cấu hình grub.conf Biên soạn: Nguyễn Trí Thức – Lưu Hành Nội ... Đinh Tiên Hoàng, P Đa Cao, Q.1, TP.HCM Tel: (84-8) 38244041 – 0989012418 www.athena.edu.vn Lưu file grub.conf lại khởi động lại hệ thống - Sau khởi động lại hệ thống menu boot sau: Lần lượt chọn ... Đinh Tiên Hoàng, P Đa Cao, Q.1, TP.HCM Tel: (84-8) 38244041 – 0989012418 www.athena.edu.vn - Copy file lilo.conf vào thư mục /etc/lilo.conf - Sử dụng lệnh /sbin/lilo để thay boot loader GRUB boot...

Ngày tải lên: 29/09/2013, 20:20

... commands such as fdisk and parted Tools for working with file systems include those that create file systems (mkfs), view and modify file system attributes (tune2fs and dumpe2fs), mount/unmount file ... CD, DVD, and so on) or remote (NFS, Samba, and so on) file systems Here is an example of the mount command for listing mounted file systems: $ mount List mounted remote and local file systems ... those file systems at boot time or later by hand Mounting File Systems with the mount Command The mount command is used to view mounted file systems, as well as mount any local (hard disk, USB...

Ngày tải lên: 29/09/2013, 22:20

... Command to join two files into one $ cat filename1 filename2 > file3 This example joins filename1 and filename2 files into filename3 file Note – If filename3 is existed, this command will overwrite ... program The format for the redirection of standard input, standard output, and standard error is: command > file or command >> file command < file command 2> file Angle Brackets ( >, ) Use the ... ls command to a file called file. list ls > file. list 19 Display the contents of file. list using the cat command cat file. list 20 Append the output of the date command to file. list date >> file. list...

Ngày tải lên: 02/10/2013, 09:20

... Microcontroller and Embedded Systems: Using Assembly and C Mazidi, Mazidi and McKinlay Chung-Ping Young 楊中平 Home Automation, Networking, and Entertainment Lab Dept of Computer Science and Information ... Numbering and coding systems Digital primer Inside the computer Department of Computer Science and Information Engineering National Cheng Kung University, TAIWAN NUMBERING AND CODING SYSTEMS Decimal and ... Microcontroller and Embedded Systems: Using Assembly and C Mazidi, Mazidi and McKinlay Chung-Ping Young 楊中平 Home Automation, Networking, and Entertainment Lab Dept of Computer Science and Information...

Ngày tải lên: 04/10/2013, 19:10

... (N), • cylindrical (C) and • asymmetrical (A) Using the possible electromagnetic systems and geometry, actuators and sensors (motion nano- and microstructures as well as nano- and microdevices) can ... ICs, provide enabling benefits and capabilities to design and manufacture NEMS and MEMS Critical issues are to improve power and thermal management, circuitry and actuator/sensor integration, ... integrated circuit and micromachining silicon, germanium, and gallium arsenic technologies have been developed and used to manufacture ICs and motion microstructures (microscale actuators and sensors)...

Ngày tải lên: 17/10/2013, 11:15

... credit and debit transfers, e-money, and stored-value transactions) and for all points on the payments Nonbanks and Risk in Retail Payments 19 chain (hardware and software provision, consumer and ... internal investment decisions of firms (Gordon and Loeb 2006) and the market-based pressures that impact cyber security (Anderson and Moore 2006, Kannan and Telang 2005) In this introductory chapter, ... the book: Cyber Policy and Regulation, Risk Management and Security Investment, Technology and Policy Adoption, Combating Cybercrime, Privacy and Trust Information Risk and the Economics of Security...

Ngày tải lên: 18/10/2013, 17:15