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Multiboot System under Windows XP – Ubuntu – Windows 7. Qiong LIN - 28 April 2012. Multiboot Mutlibooting means to host multiple Operating Systems ( OS ) on one single computer. Why Multibooting ?.

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Presentation Transcript
slide2
Multiboot

Mutlibooting means to host multiple Operating Systems (OS) on one single computer

why multibooting
Why Multibooting ?
  • Some softwares run only under one specific operating system (ex: Windows or Linux)
  • Tests running on different environments within one machine
  • Efficiency and cost savings on hardware
  • Migration to a new operating system
step into multibooting process
Step into … Multibooting Process
  • Preparation beforehand: partitioning
  • Installing new operating systems
  • Select and launch one of those operating systems
step 1 partitioning
Step 1 - Partitioning

Partitioning is the process of dividing an

entire storage device into smaller chunks

Rules to keep in mind:

  • Size & structure
  • File system specific to OS’s in use
partitioning size and structure
Partitioning – Size and Structure

Size

  • Allocate sufficient space depending on new OS and

future uses

Structure of the partition:

  • Primary partition ( max 4 units)
    • Extended partition (> 4 units), which leads to:
      • Logical volume
how to partition
How to partition ?
  • Issue: computer hard drive mounted -> not modifiable
  • Solution: use a Live CD (System Rescue CD)

Before Partioning

Partitions finalised

partitioning file systems
Partitioning – File systems

Assign the right file system to each partition:

  • NTFS -> Windows file system
  • ext4 -> Linux file system
step 2 installation ongoing
Step 2 – Installation ongoing …

Three OS’s are installed in this order:

  • Windows XP
  • Ubuntu
  • Windows 7

…. Installations done!

step 3 multibooting process
Step 3 – Multibooting process
  • BIOS -> sends INT 13h -> 1st sector (MBR)
  • Customised GRUB multiboot start menu
  • Load the booting code
  • Launch the operating system on the selected partition

1st

data protection

Data Protection

Achieve data security => data encryption

data encryption two scenarios
Data Encryption – two scenarios

OS built-inpassword protectedencryption

  • Linux – pre-installing protection (option on the whole partition/individual files)
  • Windows XP/7 – individual files

Third-partyencryption (TrueCrypt)

  • Virtual mounted disk
conclusions
Conclusions
  • Multibooting -> gain flexibility on number of OS’s available
  • To better explore the computer capacities
  • Skills gained: booting, partitioning, OS’s features, different file systems
  • Becoming conscious about data safeguarding