Computer Hardware
Which is LEAST likely to interfere with upgrading to a newer DOS Version?

Compressed drives
Video controller
None of these
Existing backup files
ROM BIOS

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Computer Hardware
To install a second IDE drive into a computer, you must

Use the IDE configuration software to set the new drive as slave
Verify that you define the new drive as D: in the CMOS setup
Verify that you attach the drive to the connector at the end of the ribbon cable
Set the master-slave jumper to slave on the second drive

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