mediašcd rom and floppy disk drives

... Settings" categoryname="Restrict Drives" policynameusb="Disable USB" policynamecd="Disable CD -ROM" policynameflpy="Disable Floppy" policynamels120="Disable High Capacity Floppy" explaintextusb="Disables ... explaintextcd="Disables the computers CD -ROM Drive by disabling the cdrom.sys driver" explaintextflpy="Disables the computers Floppy Drive by disabling the flpydisk.sys driver" explaintextls120="Disables ... the computers High Capacity Floppy Drive by disabling the sfloppy.sys driver" labeltextusb="Disable USB Ports" labeltextcd="Disable CD -ROM Drive" labeltextflpy="Disable Floppy Drive" labeltextls120="Disable...

Ngày tải lên: 03/04/2014, 12:20

... hand, the form factors of hard disk drives are taking a downsizing trend The 5.25" drives have now all but disappeared from the mainstream PC market, with 3.5" drives dominating the desktop and ... 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

... 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 ... 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 ... Gb/in2 and beyond [5] The rate of data retrieval from a computer’s hard disk drive depends on the bit density and the speed at which the disk is spinning Modern hard disks spin at between 4,200 and...

Ngày tải lên: 05/10/2015, 22:15

... boot from CD -ROM We’ve already seen that they’re unsuitable for archival data storage and data transfer For this purpose, FreeBSD uses tapes and CD-ROMs, which are much more reliable, and for ... the disk, as we saw on page 216 /etc/disktab does have labels for floppy disks: use fd1440 for a 3½" 1.44 MB floppy, and fd1200 for a 5¼" 1.2 MB floppy: # disklabel -w -r /dev/fd0 fd1440 # disklabel ... for serial access, and is always SCSI You can also get ATAPI tape drives, which are called /dev/ast0 and /dev/nast0, and the older QIC-02 interface tapes are called /dev/wst0 and /dev/nwst0 • is...

Ngày tải lên: 04/11/2013, 14:15

... Rewrite-able? Step If an Internet connection is available, visit the manufacture’s website and list the version number and any new features that are supported ... Troubleshooting Use extreme caution when flashing the BIOS Make sure to use the correct file and that it is not corrupt If the BIOS is flashed with the incorrect BIOS type or with a corrupt...

Ngày tải lên: 11/12/2013, 15:15

Ngày tải lên: 23/12/2013, 18:15

Ngày tải lên: 25/01/2014, 02:20

... subnets and the workgroup that should receive the broadcast For example, to ensure that machines in the 192.168.221 and 192.168.222 subnets and SIMPLE workgroup are sent broadcast information from ... list and the server that maintains it is called the local master browser As machines come on and off the network, the local master browser continually updates the information in the browse list and ... from being in a browse list by using the browseable option This boolean option prevents a share from being seen in the Network Neighborhood at all For example, to prevent the [data] share from...

Ngày tải lên: 26/01/2014, 08:20

... files or defaults from being seen when performing an ordinary ls command Keeping a user from accessing a file at all, however, involves working with permissions on files and or directories The ... separated from another with a slash ( /) character, even if there is only one pattern listed By doing so, the files hello.java and README will simply disappear from the directory, and the user ... file, the file (and the directory) will not be deleted Instead, the directory will remain and appear to be empty from the perspective of the user If set to yes, the directory and the vetoed files...

Ngày tải lên: 26/01/2014, 08:20

... that is already locked, it will receive an error from the operating system and will wait until the lock is released Samba supports the standard DOS and NT filesystem (deny-mode) locking requests, ... the operating system entirely in uppercase letters However, if you open an MS-DOS prompt and enter the command edit readme.txt, the all-caps file is loaded into the editing program, even though ... hidden attribute! 5.4 Name Mangling and Case Back in the days of DOS and Windows 3.1, every filename was limited to eight upper-case characters, followed by a dot, and three more uppercase characters...

Ngày tải lên: 26/01/2014, 08:20

... "Hacking" a Floppy Disk Eject Motor A fair number of BEAMbots use a surplus Macintosh computer floppy eject motor (in particular, the eject motor from Sony-manufactured Mac floppy drives) as a ... Get a floppy drive, and "uncase" it First off, you need to find a floppy drive for an Apple Macintosh computer (you can still find these, although they'll be getting scarce soon since floppy drives ... 'bot) I this with a band saw (I also tinker in woodworking, so I already have one); if you don't have a band saw, a hacksaw and file will step 5: Step 5: Providing for attachments and (maybe) a centering...

Ngày tải lên: 18/04/2014, 09:12

... hơi khó" ,nó nằm bước đây,ta trang trí mặt cho với công cụ : Line Tool,Paint Bucket Tool,Transfrom để làm cho ...

Ngày tải lên: 30/07/2014, 12:21

Ngày tải lên: 11/08/2014, 06:21

... 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 ... 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 ... not desired and should be avoided 1.3 Probabilistic Methods in Robust Control In this section, we discuss the probabilistic and randomized methods used in robust control for analysis and synthesis...

Ngày tải lên: 09/09/2015, 11:33

... expansion and random vibration of the disk and head In addition, it may also be inefficient if the number of disks in the disk stack is small In modern HDD systems with only one to four disk platters, ... electromagnetic read/write heads with a specially shaped ferrous core and a rotating disk with a ferromagnetic surface To record data on the surface of a disk, current is passed through the electromagnet ... husband and family for their love, support, encouragement and for their always being there to listen to me and offer advises Without my newly-wedded husband, Chris Choy Min Chee’s understanding,...

Ngày tải lên: 04/10/2015, 16:02

... I and FVC Summary Current vector control ATV71 • The current vector control law allows the drive to attain better static and dynamic performance for torque and speed • Requires a good understanding ... dynamic characteristics • Overtorque from 170% to more than 200%, depending upon the motor and the optimization of the settings (current limit adjustable from 150% to 165% In of the drive) • Nominal ... is a compromise between performance and robustness • It is compatible with that of the ATV58 • It functions only in open loop  Applications : • • • • • • Hoisting General material-handling equipment...

Ngày tải lên: 28/12/2015, 17:07

... high passbands and performance levels comparable with and even superior to the best DC drives On the other hand, the motor used is not a standard design due to the presence of a sensor and, where ... control and protection Table of contents Brief history and reminders 1.1 Brief history 1.2 Reminders: The main functions of electronic starters and variable speed drives The main operating modes and ... These developments are significantly expanding the drives on offer and their options 1.2 Reminders: The main functions of electronic starters and variable speed drives Controlled acceleration Motor...

Ngày tải lên: 28/12/2015, 17:07

... smaller connectors attach to the drives Most power supplies support four IDE drives and two floppy drives The connectors for the floppy drives and for the IDE drives (CD -ROM & hard drive) are different ... will be used for the CD -ROM If there is a cover for this bay, reach inside the case and push out the cover Retrieve the CD -ROM from the parts inventory and slide it in from the front of the case ... proper ribbon cable for the floppy drive Take one end of the ribbon cable and connect it to the back of the floppy drive Take the other end and connect it to the floppy connector on the motherboard...

Ngày tải lên: 21/12/2013, 19:15

... thành phần khác tơng tự Tạo partition: Để tạo partition dùng lệnh fdisk để tạo partion (ví dụ với Linux) # fdisk /dev/hda Các lệnh fdisk p Hiện partition thời n Tạo partition gồm extended primary ... dùng với CD -ROM disks sysv Kiểu Nhằm hỗ trợ cho dạng UNIX System V filesystem msdos Kiểu DOS partition mà Linux truy nhập hpfs Kiểu High Performance filesystem Linux Managing disk use Để biết ... / ext2 defaults 1 /dev/sda2 /usr ext2 defaults 1 /dev/sda3 /usr/data ext2 defaults 1 /dev/cdrom /cdrom iso9660 ro 1 /dev/sda4 /dos msdos defaults 1 /dev/sdb1 /data ext2 defaults 1 Một số kiểu...

Ngày tải lên: 28/09/2013, 11:20

... Tạo partition: Để tạo partition dùng lệnh fdisk để tạo partion (ví dụ với Linux) 73 Giới thiệu UNIX- Một số thao tác UNIX # fdisk /dev/hda Các lệnh fdisk p Hiện partition thời n Tạo partition ... thể dạng file sau /dev/hd[drive][partition] Với đĩa ký hiệu hd a cho primary disk b cho slave, c cho primary secondary disk d cho slave secondary Tiếp sau giá trị số ứng với partition đĩa Với đĩa ... / ext2 defaults 1 /dev/sda2 /usr ext2 defaults 1 /dev/sda3 /usr/data ext2 defaults 1 /dev/cdrom /cdrom iso9660 ro 1 /dev/sda4 /dos msdos defaults 1 /dev/sdb1 /data ext2 defaults 1 Một số kiểu...

Ngày tải lên: 09/10/2013, 13:20