Upgrading to a newer DOS version Which item is LEAST likely to interfere with a smooth DOS upgrade on a typical PC?

Introduction / Context:
Before upgrading DOS, technicians consider hardware compatibility, storage layout, and disk utilities that might conflict with setup. Some items commonly complicate upgrades, while others are neutral or even beneficial. Identifying the least problematic element reduces risk and downtime.

Given Data / Assumptions:

• The system currently runs an older DOS version.
• We may encounter drive compression software (for example, DoubleSpace/DriveSpace).
• Standard PC hardware (ROM BIOS, video controller) is present.
• Backup files exist on local or external media.

Concept / Approach:

Compressed drives can impact boot sequence and file locations, requiring special handling during upgrades. Firmware or BIOS idiosyncrasies can also affect installation. By contrast, having existing backups is a safety net, not an obstacle—backups should assist recovery rather than interfere with the upgrade process.

Step-by-Step Solution:

Verification / Alternative check:

Simulate the upgrade in a virtual machine with and without compressed drives. You will find compressed setups require additional steps, while the presence of backup files has no negative impact.

Why Other Options Are Wrong:

a: Some older BIOS versions need updates or special settings for newer DOS features.

b: Display adapters occasionally need compatible modes or drivers.

c: Drive compression layers can complicate boot and file access during upgrades.

e: Not applicable because backups are the least likely to interfere.

Common Pitfalls:

Upgrading without disabling or preparing drive compression; failing to verify BIOS settings; not creating verified backups before starting.

Final Answer:

Existing backup files