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– The results of the Analyze disk unit surface option (under the Work with disk
unit recovery option) show which pages have data check conditions. Use the
Display/change page data option to assign those sectors to new locations on the
disk.
– To inspect and change the 64 bytes of page header, if necessary.
– To inspect and change the 4096 bytes of page data, if necessary.
The Display/change page data option has the following functions:
– Reading data from a selected page.
– Displaying the data in hexadecimal and EBCDIC formats.
– Allowing the hexadecimal data to be changed and written to the page again.
– Displaying the 64-byte page header in formatted form.
– Allowing the 64-byte page header to be changed and written to the sector
again.
– Allowing the sector to be assigned to a new location on the disk.
– Displaying the disk unit reference code after each operation.
v Analyze disk unit surface
This option performs a read/verify operation on the selected units. Pages that
report disk URCs indicating data check errors can be assigned to new locations
on the disk using the Display/change data option. The results of the analysis can
be displayed on the console.
Work with Dedicated Service Tools environment
Use this option to work with active service functions and system devices while
you are in Dedicated Service Tools (DST). If you are logged on with service tools
security authority, you can also change service tools user IDs and work with some
system values.
The Work with Dedicated Service Tools Environment display includes the
following options:
v Active service tools
v System devices
– Printers
- Select output printer
- Cancel printer output
- Cancel printer output and deallocate printer
– Tape devices
- Select tape
- Cancel tape operation and deallocate tape
– Optical devices
- Select optical device
- Cancel optical device operation and deallocate optical device
– Alternate installation device
– Console mode
v Service tools user IDs
– Create
– Change password
– Delete
Chapter 1. Dedicated Service Tools (DST) 23