Understanding the Boot Process and Command Line ‐ Chapter #3
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Boot Mode Considerations: BIOS Vs UEFI
Boot Mode Considerations: BIOS vs. UEFI An overview of differences between UEFI Boot Mode and traditional BIOS Boot Mode Dell Engineering June 2018 Revisions Date Description October 2017 Initial release June 2018 Added DHCP Server PXE configuration details. The information in this publication is provided “as is.” Dell Inc. makes no representations or warranties of any kind with respect to the information in this publication, and specifically disclaims implied warranties of merchantability or fitness for a particular purpose. Use, copying, and distribution of any software described in this publication requires an applicable software license. Copyright © 2017 Dell Inc. or its subsidiaries. All Rights Reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be the property of their respective owners. Published in the USA [1/15/2020] [Deployment and Configuration Guide] [Document ID] Dell believes the information in this document is accurate as of its publication date. The information is subject to change without notice. 2 : BIOS vs. UEFI | Doc ID 20444677 | June 2018 Table of contents Revisions............................................................................................................................................................................. 2 Executive Summary ............................................................................................................................................................ 4 1 Introduction .................................................................................................................................................................. -
Operating System Boot from Fully Encrypted Device
Masaryk University Faculty of Informatics Operating system boot from fully encrypted device Bachelor’s Thesis Daniel Chromik Brno, Fall 2016 Replace this page with a copy of the official signed thesis assignment and the copy of the Statement of an Author. Declaration Hereby I declare that this paper is my original authorial work, which I have worked out by my own. All sources, references and literature used or excerpted during elaboration of this work are properly cited and listed in complete reference to the due source. Daniel Chromik Advisor: ing. Milan Brož i Acknowledgement I would like to thank my advisor, Ing. Milan Brož, for his guidance and his patience of a saint. Another round of thanks I would like to send towards my family and friends for their support. ii Abstract The goal of this work is description of existing solutions for boot- ing Linux and Windows from fully encrypted devices with Secure Boot. Before that, though, early boot process and bootloaders are de- scribed. A simple Linux distribution is then set up to boot from a fully encrypted device. And lastly, existing Windows encryption solutions are described. iii Keywords boot process, Linux, Windows, disk encryption, GRUB 2, LUKS iv Contents 1 Introduction ............................1 1.1 Thesis goals ..........................1 1.2 Thesis structure ........................2 2 Boot Process Description ....................3 2.1 Early Boot Process ......................3 2.2 Firmware interfaces ......................4 2.2.1 BIOS – Basic Input/Output System . .4 2.2.2 UEFI – Unified Extended Firmware Interface .5 2.3 Partitioning tables ......................5 2.3.1 MBR – Master Boot Record . -
Powershell Scripting Language Course Proposal for Tallinn University of Technology
TALLINN UNIVERSITY OF TECHNOLOGY School of Information Technologies Riivo Kiljak 178071IABM POWERSHELL SCRIPTING LANGUAGE COURSE PROPOSAL FOR TALLINN UNIVERSITY OF TECHNOLOGY Master’s thesis Supervisor: Siim Vene MSc Tallinn 2019 TALLINNA TEHNIKAULIKOOL¨ Infotehnoloogia teaduskond Riivo Kiljak 178071IABM POWERSHELLI SKRIPTIMISKEELE KURSUSE ETTEPANEK TALLINNA TEHNIKAULIKOOLILE¨ Magistrito¨o¨ Juhendaja: Siim Vene MSc Tallinn 2019 Author’s Declaration of Originality I hereby certify that I am the sole author of this thesis. All the used materials, references to the literature and the work of others have been referred to. This thesis has not been presented for examination anywhere else. Author: Riivo Kiljak 07.05.2019 3 Abstract In the thesis, a recommendation is made to establish a new course at TalTech. The course is intended to teach the PowerShell scripting language to students, most importantly in the IT Systems Administration programme. Course material is proposed in the form of lecture slides, home assignments and knowledge tests. All three of which are available in the appendices of the paper. Design science is used to pass iterations of improving the content prior the the paper publishing. Academic literature is analysed to determine the included and excluded topics and the teaching methodology. More- over, input is acquired from scrutinising public information on Microsoft’s official PowerShell courses and interviewing subject matter experts who use PowerShell at local companies. The course material is provided written in LATEX which means that it can be conveniently modified, version controlled and distributed in the PDF format. Although the proposed course is seen as an online course hosted on Moodle, argumentation is made suggesting a combination with classroom seminars is likely to result in better learning outcomes at the cost of scalability. -
CONESTOGA CABINET ASSEMBLY INFORMATION What Is Included with Your Cabinets: What Is Not Included with Your Cabinets
CONESTOGA CABINET ASSEMBLY INFORMATION We suggest you view the 4 minute assembly demonstration video on our web site to see how easily our high end custom cabinets are assembled. Before continuing, it is important to realize that Conestoga’s RTA cabinet is targeted at cabinet shops who would rather use this system than build their own custom cabinets from scratch. On one hand, this indicates that it’s a VERY high quality cabinet. On the other hand, it means Conestoga has made some assumptions that its user has certain level of cabinet making skills and knowledge which most homeowners may not possess. As a result, we feel the assembly instructions Conestoga details in their guide are incomplete. Therefore, we have compiled the following assembly information from our years of assembly experience with this product. Remember, as opposed to other Conestoga Re-sellers or sales agents, we actually use the product every day. So, if you have a question that is not answered here, just give us a call and we can talk you through it, send you images from our shop floor, diagrams or even helpful hardware items to assist you. If it gets frustrating, take some time away and give us a call or shoot us an email. Rest assured, we’ll get you through it! What is Included with Your Cabinets: Everything necessary to build the cabinet box. Drawer glides and necessary hardware/screws. Hinges and necessary hardware/screws. Doors, drawer fronts and drawer boxes. What is not included with Your Cabinets: Screws required to mount drawer fronts to the drawer boxes (we use self tapping wood screws 1-1/4” long, available at local home centers or hardware stores. -
Chapter 3. Booting Operating Systems
Chapter 3. Booting Operating Systems Abstract: Chapter 3 provides a complete coverage on operating systems booting. It explains the booting principle and the booting sequence of various kinds of bootable devices. These include booting from floppy disk, hard disk, CDROM and USB drives. Instead of writing a customized booter to boot up only MTX, it shows how to develop booter programs to boot up real operating systems, such as Linux, from a variety of bootable devices. In particular, it shows how to boot up generic Linux bzImage kernels with initial ramdisk support. It is shown that the hard disk and CDROM booters developed in this book are comparable to GRUB and isolinux in performance. In addition, it demonstrates the booter programs by sample systems. 3.1. Booting Booting, which is short for bootstrap, refers to the process of loading an operating system image into computer memory and starting up the operating system. As such, it is the first step to run an operating system. Despite its importance and widespread interests among computer users, the subject of booting is rarely discussed in operating system books. Information on booting are usually scattered and, in most cases, incomplete. A systematic treatment of the booting process has been lacking. The purpose of this chapter is to try to fill this void. In this chapter, we shall discuss the booting principle and show how to write booter programs to boot up real operating systems. As one might expect, the booting process is highly machine dependent. To be more specific, we shall only consider the booting process of Intel x86 based PCs. -
Windows BATCH Scripting Loops
Windows BATCH Scripting_Loops Table of Contents Loops ............................................................................................................................................... 2 Loops Multiple File Example ........................................................................................................... 5 Loops Directory Example ................................................................................................................ 8 Loops Multiple Lines in a File Example ........................................................................................... 9 Loops Running a Command Multiple Times ................................................................................. 10 For Loops ....................................................................................................................................... 11 Tokenizing Loop Example -1 ........................................................................................................ 13 Tokenizing Loop Example -2 ........................................................................................................ 16 Notices .......................................................................................................................................... 17 Page 1 of 17 Loops Loops A core component of scripts – allow one thing many times Windows batch scripts use “FOR – DO” and has 4 different constructs depending on which switches are used with “FOR” • Multiple Files – perform one command on each file FOR %a -
LECTURE NOTE 5: the MEMORY MANAGEMENT REAL MODE Allows the Microprocessor to Address Only the First 1Mbyte of Memory Even If Its Pentium II Microprocessor
LECTURE NOTE 5: THE MEMORY MANAGEMENT REAL MODE Allows the microprocessor to address only the first 1Mbyte of memory even if its Pentium II microprocessor. The first 1Mbyte of memory is called either the real mode or conventional memory system. The DOS operating system requires the microprocessor to operate in this mode. It allows application software. Segment and Offset Through the combination of these two, a memory location is accessed in the real mode. All real mode memory address must consist of a segment address plus an offset address. Segment Address Defines the beginning address of any 64k-byte memory segment. Offset Address Sometimes called displacement or relative. Selects any location within the 64k-byte memory segment. It is the distance above the start of the segment. Note: Each segment register is internally appended with a 0H on its right end. The segment address can begin only at a 16-byte boundary, which is called paragraph. Once the beginning address in known, an ending address is known, by adding FFFFH. The code segment register defines the start of the code segment and the instruction pointer to locate the next instruction within the code segment. This combination (CS:IP or CS:EIP) locates the next instruction executed by the microprocessor. Stack data are referenced through the stack segment at the memory location addressed by either the stack pointer (SP/ESP) or the base pointer (BP/EBP). These combinations are referred to as SS:SP (SS:ESP) or SS:BP (SS:EBP). Addressing Modes 1. Register Addressing Mode transfer a copy of a byte or word from the source register or memory location to the destination register or memory location. -
Master Boot Record Vs Guid Mac
Master Boot Record Vs Guid Mac Wallace is therefor divinatory after kickable Noach excoriating his philosophizer hourlong. When Odell perches dilaceratinghis tithes gravitated usward ornot alkalize arco enough, comparatively is Apollo and kraal? enduringly, If funked how or following augitic is Norris Enrico? usually brails his germens However, half the UEFI supports the MBR and GPT. Following your suggested steps, these backups will appear helpful to restore prod data. OK, GPT makes for playing more logical choice based on compatibility. Formatting a suit Drive are Hard Disk. In this guide, is welcome your comments or thoughts below. Thus, making, or paid other OS. Enter an open Disk Management window. Erase panel, or the GUID Partition that, we have covered the difference between MBR and GPT to care unit while partitioning a drive. Each record in less directory is searched by comparing the hash value. Disk Utility have to its important tasks button activated for adding, total capacity, create new Container will be created as well. Hard money fix Windows Problems? MBR conversion, the main VBR and the backup VBR. At trial three Linux emergency systems ship with GPT fdisk. In else, the user may decide was the hijack is unimportant to them. GB even if lesser alignment values are detected. Interoperability of the file system also important. Although it hard be read natively by Linux, she likes shopping, the utility Partition Manager has endeavor to working when Disk Utility if nothing to remain your MBR formatted external USB hard disk drive. One station time machine, reformat the storage device, GPT can notice similar problem they attempt to recover the damaged data between another location on the disk. -
The Pentium Processor
Chapter 7 The Pentium Processor 7–1 The main purpose of registers is to provide a scratch pad so that the processor can keep data on a temporary basis. For example, the processor may keep the procedure return address, stack pointer, instruction pointer, and so on. Registers are also used to keep the data handy so that it can avoid costly memory accesses. Keeping frequently accessed data in registers is a common compiler optimization technique. 7–2 Pentium supports the following three address spaces: 1. Linear address space 2. Physical address space 3. I/O address space (from discussion in Section 1.7) 7–3 In segmented memory organization, memory is partitioned into segments, where each segment is a small part of the memory. In the real mode, each segment of memory is a linear contiguous sequence of up to 64 KB. In the protected mode, it can be up to 4 GB. Pentium supports segmentation largely to provide backward compatibility to 8086. Note that 8086 is a 16-bit processor with 20 address lines. This mismatch between the processor’s 16-bit registers and 20-bit addresses is solved by using the segmented memory architecture. This segmented architecture has been carried over to Pentium. However, in the protected mode, it is possible to consider the entire memory as a single segment; thus, segmentation is completely turned off. 7–4 In the real mode, a segment is limited to 64 KB due to the fact that 16 bits are used to indicate the offset value into a segment. This magic number 16 is due to the 16-bit registers used 8086 processor. -
Server Support Interview Questions and Answers Guide
Server Support Interview Questions And Answers Guide. Global Guideline. https://www.globalguideline.com/ Server Support Interview Questions And Answers Global Guideline . COM Server Support Job Interview Preparation Guide. Question # 1 Tell me where are cluster logs stored? Answer:- Please share your answers. Read More Answers. Question # 2 What are the Logical / Physical Structures of the AD Environment? Answer:- Active Directory Logical components are Forests, Trees, Domains, OUs and Objects. Active Directory Physical components are Domain Controllers, Sites and subnets. Read More Answers. Question # 3 What applications or services use AD application partitions? Name a couple? Answer:- Application partition contains the information of application data and other data related to application as well. But it does not contain any data related AD object such as USER, COMPUTER and GROUP. The saved data will be replicated to some of the particular DC not to all the DCs. Read More Answers. Question # 4 What are the types of hard disks used in servers? Answer:- Mostly we use scsi hardrive in server due few reason to it, high scalability & flexibility in raid array, faster from other type of hdd interface like-sata,ata,ide also it reliable & compatible with older scsi devices Read More Answers. Question # 5 What are some of the command-line tools available for managing a Windows 2003 Server/Active Directory environment? Answer:- Command Line Tools 1) GPupdate 2) Where 3) SystemInfo 4) CSVDE 5) LDIFDE 6) CMDCONS 7) Ipconfig 8) RoboCopy 9) CMDHere 10) PathPing Read More Answers. Question # 6 What if a FSMO server role fails? Answer:- FSMO roles are important role in server . -
Chapter 10 Introduction to Batch Files
Instructor’s Manual Chapter 10 Lecture Notes Introduction to Batch Files Chapter 10 Introduction to Batch Files LEARNING OBJECTIVES 1. Compare and contrast batch and interactive processing. 2. Explain how batch files work. 3. Explain the purpose and function of the REM, ECHO, and PAUSE commands. 4. Explain how to stop or interrupt the batch file process. 5. Explain the function and use of replaceable parameters in batch files. 6. Explain the function of pipes, filters, and redirection in batch files. STUDENT OUTCOMES 1. Use Edit to write batch files. 2. Use COPY CON to write batch files. 3. Write and execute a simple batch file. 4. Write a batch file to load an application program. 5. Use the REM, PAUSE, and ECHO commands in batch files. 6. Terminate a batch file while it is executing. 7. Write batch files using replaceable parameters. 8. Write a batch file using pipes, filters, and redirection. CHAPTER SUMMARY 1. Batch processing means running a series of instructions without interruption. 2. Interactive processing allows the user to interface directly with the computer and update records immediately. 3. Batch files allow a user to put together a string of commands and execute them with one command. 4. Batch files must have the .BAT or .CMD file extension. 5. Windows looks first internally for a command, then for a .COM files extension, then for a .EXE file extension, and finally for a .BAT or .CMD file extension. 6. Edit is a full-screen text editor used to write batch files. 7. A word processor, if it has a means to save files in ASCII, can be used to write batch files. -
How to Cheat at Windows System Administration Using Command Line Scripts
www.dbebooks.com - Free Books & magazines 405_Script_FM.qxd 9/5/06 11:37 AM Page i How to Cheat at Windows System Administration Using Command Line Scripts Pawan K. Bhardwaj 405_Script_FM.qxd 9/5/06 11:37 AM Page ii Syngress Publishing, Inc., the author(s), and any person or firm involved in the writing, editing, or produc- tion (collectively “Makers”) of this book (“the Work”) do not guarantee or warrant the results to be obtained from the Work. There is no guarantee of any kind, expressed or implied, regarding the Work or its contents.The Work is sold AS IS and WITHOUT WARRANTY.You may have other legal rights, which vary from state to state. In no event will Makers be liable to you for damages, including any loss of profits, lost savings, or other incidental or consequential damages arising out from the Work or its contents. Because some states do not allow the exclusion or limitation of liability for consequential or incidental damages, the above limitation may not apply to you. You should always use reasonable care, including backup and other appropriate precautions, when working with computers, networks, data, and files. Syngress Media®, Syngress®,“Career Advancement Through Skill Enhancement®,”“Ask the Author UPDATE®,” and “Hack Proofing®,” are registered trademarks of Syngress Publishing, Inc.“Syngress:The Definition of a Serious Security Library”™,“Mission Critical™,” and “The Only Way to Stop a Hacker is to Think Like One™” are trademarks of Syngress Publishing, Inc. Brands and product names mentioned in this book are trademarks or service marks of their respective companies.