IBM 3741 Operator's Manual page 96

DISK COPY OPERATIONS
When doing disk copy operations, you copy data from disk 2
onto disk 1 (see illustration).
Four ways to use this feature:
• To copy all (image copy) or part of disk 2.
• To copy a data set.
• To copy up to a specified record on disk 2.
• To copy a single record.
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