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IBM 3741 Operator's Manual page 100

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3.
4.
5.
6.
Position Disk 1 on the index track to the sector where
copying should begin. If copying all of the disk, posi-
tion the disk to sector 08.
Position Disk 2 to the data set label that contains the
End of Extent (EOE) where copying is to stop. To do
this, press FUNCT SEL upper and DISK 2 REC
ADV.
The first time you do this, you'll be at track 00, sector
08. If copying all of the disk, position the disk to the
data set label with the highest EOE address.
Press FUNCT SEL upper.
Hold down NUM SHIFT and press COPY (starts the
copying).
When copying is completed, the 3741 returns to the index
track.
Note:
During copy all or part of disk 2 operations, program
buffers 1 through 8 are destroyed. If you are using key entry
programs in these program buffers, the program buffers must
be restored.
How to Recover from Disk Errors While Copying All or Part
of Disk 2
For Disk Error Numbers 2, 4, or 5:
90
1.
Write down the record address. (Disk 1 and Disk 2 have
the same address in this copy mode.)
2.
Hold down NUM SHIFT and press RESET.
3.
When copying is finished, select the Update mode to
correct the defective record located at the address
recorded in step 1.
For Disk Error Number 3:
1.
Write down the record address.
2.
Hold down NUM SHIFT and press RESET.
3.
After copying has finished, select the Update mode to
correct all sectors of the track recorded in step 1.
This copy operation can be stopped by holding down ALPHA
SHIFT and pressing RESET.

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