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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 . -
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. -
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 . -
Software- Und Hardwaretest Minimal Linux
Software- und Hardwaretest Minimal Linux Abgabetermin: Gera, den 16.11.2018 Studienarbeit von: Matrikelnummer: Duale Hochschule: Duale Hochschule Gera-Eisenach Weg der Freundschaft 4a 07546 Gera Studienbereich: Technik Studiengang: Praktische Informatik Kurs: PI 16 Ausbildungsstätte: dotSource GmbH Goethestraße 1 07743 Jena Betreuer DHGE: I Inhaltsverzeichnis Abbildungsverzeichnis III AuflistungenIV AbkürzungsverzeichnisV 1 Einleitung1 1.1 Problemstellung...............................1 1.2 Zielstellung.................................2 1.3 Vorgehensweise...............................3 2 Vorbetrachtung und Vorbereitung4 2.1 Der Bootvorgang..............................4 2.1.1 Das BIOS..............................5 2.1.2 UEFI.................................5 2.1.3 CD / DVD.............................6 2.1.4 Der Kernel..............................7 2.2 Die Anforderungen.............................9 2.2.1 Das Praktikum...........................9 2.2.2 Obligatorische Anforderungen................... 10 2.2.3 Optionale Anforderungen...................... 11 2.2.4 Abgrenzungen und unnötige Funktionen............. 11 2.3 Das Werkzeug................................ 12 2.3.1 Die Alternative........................... 12 3 Die Realisierung 16 3.1 Minimal-Linux-Live............................. 16 3.1.1 Die Voraussetzungen........................ 16 3.1.2 Das Build-Skript.......................... 17 3.1.3 Das Ergebnis............................ 20 3.2 Die Anpassungen.............................. 21 3.2.1 Die Kernelkonfiguration..................... -
How Will You Troubleshoot the Issue? What Are the Steps to Followed? A
1. A user in a corporate network contacts service desk saying he/she has lost network connectivity: How will you troubleshoot the issue? What are the steps to followed? A. First I will check the network cable is plugged in or not. Then check the network connections and the ip address is assigned or not. Then check connecting to website or not. IP conflict. 2. A User calls in and complains that her computer and network is running very slow. How would go about troubleshooting it? A. 3. How would you create an email account for a user already in AD? A. Open Microsoft Outlook if you are using office 2000, and click on "Tools" tab. Go to "Email Accounts". There you can find two option like Email and Directory. Click on "Add a new Account" and click next. If you are using Exchange Server then click over there, this depends on that particular Organization. According to the their setup you have to choose. And if you are using POP3 server then next popup will come along with your name, email address POP3 and SMTP IP address, Password etc. and after that click on Next and finish it..... 4. A PC did not receive an update from SMS. What steps would we take to resolve this? A. If SMS not updated in client system. 1. Need to check system getting IPaddress or not. 2. Need to check system in domain or not 3.Ensure that windows firewall should be off. 5. How do you set the IP address by using the command prompt A. -
Lecture 5: Feb 4Th, 2020 5.1 OS Boot Process
CMPSCI 577 Operating Systems Design and Implementation Spring 2020 Lecture 5: Feb 4th, 2020 Lecturer: Prashant Shenoy Scribe: Serena Chan 5.1 OS Boot Process While seemingly mundane and not directly relevant to the modifications we will be making in this course, understanding the OS boot process is important for modifying the kernel. There are six steps that take the machine to a running state from when it is first turned on. 5.1.1 Step 1: BIOS (Basic Input/Output System) The BIOS is a small piece of code that lives in the firmware and is the first software that runs upon boot. When the computer is turned on, the BIOS runs the Power-on Self Test, where the RAM is initialized and hardware such as disks and peripherals are identified and checked. Once the disk is found, the BIOSwill start the boot process from the disk (‘bootstrapping’). The BIOS is often stored on EEPROM/ROM (read-only memory); because of its hardware-specific nature, it is not designed to be easily user modifiable. In addition, since the BIOS is the lowest level of softwarein the PC, it also acts as an interface for the OS to perform I/O and communicate with hardware. 5.1.2 Step 2: MBR (Master Boot Record) The MDR is the first 512 bytes of memory and consists of three components. In particular, thefirst440 bytes contain the bootstrap code that is used to continue the boot process, or the 1st stage boot loader; this is executed by the BIOS. The functionality of the code is to simply search through the partition table and find the root partition, where is where the OS resides. -
Virus Infection Techniques: Boot Record Viruses
Virus Infection Techniques: Boot Record Viruses Bill Harrison CS4440/7440 Malware Analysis and Defense Reading } Start reading Chapter 4 of Szor 2 Virus Infection Techniques } We will survey common locations of virus infections: MBR (Master Boot Record) Boot sector Executable files (*.EXE, *.COM, *.BAT, etc.) } Most of the examples of these viruses, especially the first two types, are from the DOS and floppy disk era 3 Why Study Older Viruses? } Vulnerabilities remain very similar over time, along with the means to exploit them and defend against them } Modern Internet worms differ mainly in the use of the internet for transport, and are otherwise similar to older viruses } Older viruses illustrate the virus vs. antivirus battle over many generations 4 Boot-up Infections and the PC Boot-up Sequence } PC boot-up sequence: 1. BIOS searches for boot device (might be a diskette, hard disk, or CD-ROM) 2. MBR (Master Boot Record) is read into memory from the beginning of the first disk partition; execution proceeds from memory 5 Master Boot Record Structure Boot-up Sequence cont’d. 3. Beginning of MBR has tiny code called the boot- strap loader 4. Data area within MBR has the disk PT (partition table) 5. Boot-strap loader reads PT and finds the active boot partition 6. Boot-strap loader loads the first sector of the active partition into memory and jumps to it; this is called the boot sector 7 Boot-up Sequence cont’d. } MBR is always at BIOS the very first sector of the hard MBR: Expanded View MBR Boot-strap loader code (446 disk (first 512 -
Windows 10 Download for Windows Vista Windows 10 Download for Windows Vista
windows 10 download for windows vista Windows 10 download for windows vista. Dummies has always stood for taking on complex concepts and making them easy to understand. Dummies helps everyone be more knowledgeable and confident in applying what they know. Whether it’s to pass that big test, qualify for that big promotion or even master that cooking technique; people who rely on dummies, rely on it to learn the critical skills and relevant information necessary for success. Learning Made Easy. Copyright © 2021 & Trademark by John Wiley & Sons, Inc. All rights reserved. Upgrade from Windows Vista to Windows 10 or 8.1? If you pay for 7 and then try for a free upgrade to 10 you may not get it as that offer expired in 2016. And 10 is cheaper than 7 to buy. But check everything first:: It depends on the hardware requirements of later operating systems and also whether the computer/laptop manufacturer supports and supplies drivers for the later operating systems as to whether it is possible or feasible to upgrade or not. There is no free upgrade from Vista to 7, 8.1 or 10. Follow these steps before you buy Windows 7; extended support Windows 7 SP1 until January 14, 2020 . Microsoft no longer sells 7; try amazon.com. Go to your Computer / Laptop Manufacturer's website and see if Windows 7 Drivers are available for your Make and Model Computer / Laptop. If not available, Windows 7 will not work correctly for you. Run the "Windows 7 Upgrade Advisor" Check to see if your System Specifications are compatible for Windows 7: "Windows 7 system requirements" Windows 7 Upgrade paths: Follow these steps before you buy and Upgrade (clean install) to Windows 8.1; extended support ends January 10, 2023 . -
Patching DOS 5 and up for the Pcjr
Patching DOS 5 and up for the PCjr November 29th, 2020 [email protected] Background Patching DOS 5+ Theory of operation Preparing a DOS 5 disk Patching the DOS 5+ disk Create FORMATJR.COM Hard drive installation Fdisk and create a DOS partition Format the hard drive partition Appendix A - Wiping out a boot sector Background The PCjr shipped in 1983 in two configurations: a 64KB machine with no floppy disk drive or a 128KB machine with a single floppy disk drive. The architecture of the machine has the video buffer “borrow” memory from the main memory of the machine. With the standard 16KB video buffer this makes the available RAM either 48KB or 112KB. IBM never offered a hard drive solution. Adding extra memory to a PCjr became possible, but it required a device driver to be loaded at boot time. Microsoft, Tecmar, and other vendors provided device drivers with their memory expansions. The best of the device drivers was a shareware program called jrConfig written by Larry Newcomb. jrConfig can be downloaded from http://www.brutman.com/PCjr/pcjr_downloads.html. The original version of DOS that shipped with the PCjr was PC DOS 2.1. DOS versions 2.1 through 3.3 work on the machine as is. To run DOS 5 or later two things are required: ● Extra memory is required. While extra memory is useful for DOS 2.1 - 3.3, DOS 5 won’t even boot on a small system. I BM formally states the requirement is 512KB and the PCjr is not supported. ● DOS 5 can be patched to work on a PCjr even though it is not supported. -
Master Boot Record (MBR)
Master Boot Record (MBR) Offset Size (bytes) Description 0 436 MBR Bootstrap (flat binary executable code) 436 10 Optional "unique" disk ID1 446 64 MBR Partition Table, with 4 entries (below) 446 16 First partition table entry 462 16 Second partition table entry 478 16 Third partition table entry 494 16 Fourth partition table entry 510 2 (0x55, 0xAA) "Valid bootsector" signature bytes Partition Entry Offset Size Description 0 1 byte Boot indicator bit flag: 0 = no, 0x80 = bootable (or "active") 1 1 byte Starting head 2 6 bits Starting sector (Bits 6-7 are the upper two bits for the Starting Cylinder field.) 3 10 bits Starting Cylinder 4 1 byte Partition Type (0xB or 0xC for FAT32). 5 1 byte Ending Head 6 6 bits Ending Sector (Bits 6-7 are the upper two bits for the ending cylinder field) 7 10 bits Ending Cylinder 8 4 bytes Relative Sector (offset, in sectors, from start of disk to start of the partition) 12 4 bytes Total Sectors in partition BIOS Parameter Block (BPB) Offset Size Meaning (bytes) (bytes) 0 3 The first three bytes EB XX 90 disassemble to JMP SHORT XX NOP. 3 8 OEM identifier. 11 2 The number of Bytes per sector (all numbers are in the little-endian format). 13 1 Number of sectors per cluster. 14 2 Number of reserved sectors. The boot record sectors are included in this value. 16 1 Number of File Allocation Tables (FAT's) on the storage media. Often 2. 17 2 Max # of directory entries (0 for FAT32 which stores directories in data region). -
Boot Problem Solutions B 102/1
B102.qxp_July 2018 25/05/2018 10:00 Page 23 BcdEdit: Boot Problem Solutions B 102/1 If Windows Goes on Strike while Booting Up: Use BcdEdit to Take Back Control Using the information given in this article you will be able to: Edit your Windows system’s boot configuration, Remove an old operating system from the boot menu, Restore a faulty boot sector using BootRec. On Windows XP, you could change the boot menu and configure the process simply by editing the BOOT.INI file. This was especially useful if you had a multi- boot system, and needed to quickly change the options displayed in the menu when you start up your PC. With the introduction of Windows 7, everything changed, and modifying your boot menu became much more complicated than editing a single file. That’s because Microsoft replaced the BOOT.INI file with the BCD (Boot Configuration Data) database. Unfortunately, this data could no longer be edited with a text editor and now it is only possible to make configuration changes using the BcdEdit tool. In this article, I’ll show you how to use the BcdEdit program in order to add operating systems to the boot configuration data, or remove entries from the list of displayed operating systems. • BcdEdit: The New Boot File Editor in Windows .... .......... B 102/2 • BcdEdit: The Boot Configuration Data Editor .... ............. B 102/4 • You Should Know these BcdEdit Parameters ..... ............. B 102/5 • Manage Multi-boot Systems Using BcdEdit .... ............... B 102/8 • How to Rescue Windows 10, 8.1 & 7 Multi-boot Systems .. -
Windows Embedded Standard 2009 Prepkit
MCTSi Exam 70-577 Windows Embedded Standard 2009 Preparation Kit Certification Exam Preparation Automation Not for resale. ii Published by Microsoft Corporation One Microsoft Way Redmond, Washington 98052-6399 This document is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS DOCUMENT. The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information presented after the date of publica- tion. Information in this document, including URL and other Internet Web site references, is subject to change with- out notice. Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval system, or transmit- ted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any pur- pose, without the express written permission of Microsoft Corporation. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property. Copyright © 2009 Microsoft Corporation. All rights reserved. Internet Explorer, Microsoft, MS-DOS, Visual Studio, Win32, Windows and Windows Vista are trademarks of the Microsoft group of companies.