Differences Between DVD/CD Boot and USB Boot

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SUMMARY

The discussion clarifies the operational differences between USB Boot and CD/DVD Boot processes. When booting from a CD/DVD, the BIOS prompts the user to press a key to initiate installation without requiring a login. In contrast, USB Boot may not present this notification, allowing access to setup files only after logging in, which can lead to confusion. This behavior is attributed to the USB's detection mechanism, which functions similarly to a hard drive, thus altering the boot sequence experience.

PREREQUISITES
  • Understanding of BIOS settings, specifically Legacy Mode and USB Boot configurations.
  • Familiarity with the boot process of operating systems from various media.
  • Knowledge of the differences between storage devices, such as USB drives and CD/DVDs.
  • Basic troubleshooting skills for installation issues related to booting from external media.
NEXT STEPS
  • Research how to configure BIOS settings for optimal USB Boot performance.
  • Learn about UEFI vs. Legacy Boot modes and their implications on installation processes.
  • Explore troubleshooting techniques for common USB Boot issues.
  • Investigate the differences in installation processes between various operating systems when booting from USB versus CD/DVD.
USEFUL FOR

This discussion is beneficial for IT professionals, system administrators, and anyone involved in operating system installations or troubleshooting boot issues from USB and CD/DVD media.

mech-eng
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What are the differences between USB Boot and CD/DVD Boot. I am confused when booting from USB. My BİOS setting is set up for Legacy Mode and USB Boot but now something is different from CD/DVD boot. In DVD boot we restart PC it gives a notification at the start as push a key. Without logging in we can do the installation. But in USB case, I don't take any notification. After loggin in, under my computer I access to the setup file in the USB. The I start installation. Is this normal? Should it have been like in the case of DVD boot i.e not logging in?
 
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