To change drive letters (useful if you have two drives and have
partitioned the boot drive, but the secondary drive shows up as "D")
Go to Start > Control Panel > Administrative Tools > Computer
Management, Disk Management, then right-click the partition whose name
you want to change (click in the white area just below the word
"Volume") and select "change drive letter and paths."
>From here you can add, remove or change drive letters and paths to the
partition.
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