lecture6
... product continued to be the largest single contributor to Microsoft's income well after it had become more famous for Windows. Subsequent versions of MS-DOS featured improved performance and additional functions, not a few of which were copied from other operating systems. For example, version 1.25, ...
... product continued to be the largest single contributor to Microsoft's income well after it had become more famous for Windows. Subsequent versions of MS-DOS featured improved performance and additional functions, not a few of which were copied from other operating systems. For example, version 1.25, ...
CS 519 -- Operating Systems -
... C-SCAN (one way with fast return): lower service variability Problem with SSTF, SCAN, and C-SCAN: arm may not move for long time (due to rapid-fire accesses to same track) N-step SCAN: scan of N records at a time by breaking the request queue in segments of size at most N and cycling through the ...
... C-SCAN (one way with fast return): lower service variability Problem with SSTF, SCAN, and C-SCAN: arm may not move for long time (due to rapid-fire accesses to same track) N-step SCAN: scan of N records at a time by breaking the request queue in segments of size at most N and cycling through the ...
Operating System
... are other program management features of operating systems? multiprocessing Can support two or more processors running programs at same time ...
... are other program management features of operating systems? multiprocessing Can support two or more processors running programs at same time ...
The Macintosh File System (continued)
... • OS typically groups disk sectors in some logical way, creates a record of this structure, and builds a directory to track the type of data stored in each file ...
... • OS typically groups disk sectors in some logical way, creates a record of this structure, and builds a directory to track the type of data stored in each file ...
A Modeling Perspective of Image-Based Installation
... The output disk in this case is not a copy of any part of the input disk. It contains the logical contents of the input disk, but in different locations on the disk. The partition layout and boot information must be copied and reproduced separately from the file contents. Note that an additional, ac ...
... The output disk in this case is not a copy of any part of the input disk. It contains the logical contents of the input disk, but in different locations on the disk. The partition layout and boot information must be copied and reproduced separately from the file contents. Note that an additional, ac ...
2008 Prentice-Hall, Inc.
... Compress files so they take up less disk space Perform other important, if unexciting, tasks ...
... Compress files so they take up less disk space Perform other important, if unexciting, tasks ...
Pushbutton calibration information v1.0
... not perform the automatic Pushbutton Calibration function. What is wrong? A: 1. The version of your operating system may not support the Pushbutton Calibration function. You must be running Mac OS X version 10.3.2 or later or Windows XP or Windows 2000. If you are running an earlier operating system ...
... not perform the automatic Pushbutton Calibration function. What is wrong? A: 1. The version of your operating system may not support the Pushbutton Calibration function. You must be running Mac OS X version 10.3.2 or later or Windows XP or Windows 2000. If you are running an earlier operating system ...
Micro-CernVM: Slashing the Cost of Building and
... can take hours to prepare package repositories, build and compress virtual machine images in various formats, and to test them. This delay between making a change and verifying the result of the change restricts the speed at which the virtual appliance can be developed. On the user’s end, despite th ...
... can take hours to prepare package repositories, build and compress virtual machine images in various formats, and to test them. This delay between making a change and verifying the result of the change restricts the speed at which the virtual appliance can be developed. On the user’s end, despite th ...
CS307-slides02
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Example: System call sequence to copy the contents of one file to another ...
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Example: System call sequence to copy the contents of one file to another ...
Ceng 334 - Operating Systems
... • An input queue is where hardware generated messages such as mouse clicks and keystrokes are stored for app retrieveal • Win95 assigns each application its own input queue • In Windows 3.x there is only one input queue so a misbehaving process may delay all other applications Ceng 334 - Operating S ...
... • An input queue is where hardware generated messages such as mouse clicks and keystrokes are stored for app retrieveal • Win95 assigns each application its own input queue • In Windows 3.x there is only one input queue so a misbehaving process may delay all other applications Ceng 334 - Operating S ...
Section 3A: Windows forensics
... Exploring Microsoft File Structures • Disk space is allocated by cluster • Results in drive slack • If you create a 5000 byte Word file then on a FAT 16 1.6 GB disk then the OS reserves 1 cluster • However in FAT 16 32,000 bytes allocated to your file = 27,000 file slack • 5000 byte file uses 10 se ...
... Exploring Microsoft File Structures • Disk space is allocated by cluster • Results in drive slack • If you create a 5000 byte Word file then on a FAT 16 1.6 GB disk then the OS reserves 1 cluster • However in FAT 16 32,000 bytes allocated to your file = 27,000 file slack • 5000 byte file uses 10 se ...
Operating systems - burgate-ict
... Operating systems - UNIX • The main features of UNIX are: – It is written in the programming language C – It is a multi-programming operating system – It is a multi-tasking operating system – It can be used to run hundreds of terminals ...
... Operating systems - UNIX • The main features of UNIX are: – It is written in the programming language C – It is a multi-programming operating system – It is a multi-tasking operating system – It can be used to run hundreds of terminals ...
Operating Systems
... that enables your operating system to establish the communications between your existing hardware and your new device • Device drivers are available for printers, displays, CD-ROM readers, diskette drives, and so on ©2003 The McGraw-Hill Companies ...
... that enables your operating system to establish the communications between your existing hardware and your new device • Device drivers are available for printers, displays, CD-ROM readers, diskette drives, and so on ©2003 The McGraw-Hill Companies ...
AOSIOSystems - Prof. M. Saeed
... many clients share their computations with the same server. As such, thin client infrastructures can be viewed as the amortization of some computing service across several user-interfaces. This is desirable in contexts where individual fat clients have much more functionality or power than the infra ...
... many clients share their computations with the same server. As such, thin client infrastructures can be viewed as the amortization of some computing service across several user-interfaces. This is desirable in contexts where individual fat clients have much more functionality or power than the infra ...
Operating System Structures
... your Windows desktop, where you can install virtually any PC-based operating system including OS/2, Linux, Solaris, NetWare or other versions of Windows. Each virtual machine emulates a complete hardware system – from processor to network card – in a self-contained, isolated software environment, en ...
... your Windows desktop, where you can install virtually any PC-based operating system including OS/2, Linux, Solaris, NetWare or other versions of Windows. Each virtual machine emulates a complete hardware system – from processor to network card – in a self-contained, isolated software environment, en ...
UNIX Operating System Names
... descendant of the operating system Apple had used in its Macintosh computers since their introduction in 1984. However, the current macOS is a Unix operating system built on technology that had been developed at NeXT from the 1980s until Apple purchased the company in early 1997. Although it was ori ...
... descendant of the operating system Apple had used in its Macintosh computers since their introduction in 1984. However, the current macOS is a Unix operating system built on technology that had been developed at NeXT from the 1980s until Apple purchased the company in early 1997. Although it was ori ...
Operating Systems Operating Systems Operating Systems
... interference, and each process gets enough CPU cycles to accomplish its task in a reasonable amount of time. – The operating system requires some CPU cycles to perform the context switching – If too many processes are started, most of the CPU cycles will be used to perform the switching and little r ...
... interference, and each process gets enough CPU cycles to accomplish its task in a reasonable amount of time. – The operating system requires some CPU cycles to perform the context switching – If too many processes are started, most of the CPU cycles will be used to perform the switching and little r ...
Interfacing with the Operating System
... • The operating system provides system calls for opening, reading, writing and closing files. • When you open a file in "C" (or Java) you will be invoking the appropriate operating system call. • Opening a file involves locating it, and bringing into memory information necessary to access it. • Read ...
... • The operating system provides system calls for opening, reading, writing and closing files. • When you open a file in "C" (or Java) you will be invoking the appropriate operating system call. • Opening a file involves locating it, and bringing into memory information necessary to access it. • Read ...
Disks
... Disk Writing Strategies • There are none • The best one can do is – collect together a sequence of contiguous (or nearby) sectors for writing – Write them in a single sequence of disk actions ...
... Disk Writing Strategies • There are none • The best one can do is – collect together a sequence of contiguous (or nearby) sectors for writing – Write them in a single sequence of disk actions ...
Chapter 5 - Nawar.us
... individuals should back up their PC occasionally and all important files each time they are modified. ...
... individuals should back up their PC occasionally and all important files each time they are modified. ...
EET-225 Homework #1
... would arrive in each state, and what the next possible state(s) would be. 4. When passing a local (or other temporary) variable to a newly-started thread, is there any danger involved? Explain. 5. Explain the meaning of the keyword "volatile" when used with a variable under Visual C++. Use the MSDN ...
... would arrive in each state, and what the next possible state(s) would be. 4. When passing a local (or other temporary) variable to a newly-started thread, is there any danger involved? Explain. 5. Explain the meaning of the keyword "volatile" when used with a variable under Visual C++. Use the MSDN ...