IBM SY44-5902-05 manual Example of Alter Diskette Data display

			Alter Diskette Data
Starting sector address . .			_____	CCHRR
Type changes, press Enter.
0000	00000000	00000000	00000000	00000000	*	*
0010	00000000	00000000	00000000	00000000	*	*
0020	00000000	00000000	00000000	00000000	*	*
0030	00000000	00000000	00000000	00000000	*	*
0040	00000000	00000000	00000000	00000000	*	*
0050	00000000	00000000	00000000	00000000	*	*
0060	00000000	00000000	00000000	00000000	*	*
0070	00000000	00000000	00000000	00000000	*	*
0080	00000000	00000000	00000000	00000000	*	*
0090	00000000	00000000	00000000	00000000	*	*
00A0	00000000	00000000	00000000	00000000	*	*
00B0	00000000	00000000	00000000	00000000	*	*
00C0	00000000	00000000	00000000	00000000	*	*
00D0	00000000	00000000	00000000	00000000	*	*
More...
F3=Exit	F5=Refresh	F12=Cancel F14=Previous sector

F15=Next sector

Figure 82. Example of Alter Diskette Data display

You can advance one sector at a time by pressing F15, or you can return to the previous sector by pressing F14. Also, you can type over the Starting sector address field. This field gives you direct access to any sector on the diskette.

Read data from diskette: Select this option first. This option reads cylinder 0, sector by sector, and cylinders 1 through 74 with one request. When the read operation finds a CRC or a deleted or sequentially relocated sector, it builds an error summary record and continues reading until it reaches an end-of-volume.

Write data to diskette: This option writes the VTOC and the data sectors from the image that is contained in the system space object. The diskette is written in either ASCII or EBCDIC, as determined by the read option. If the operation receives a bad feedback response code from the REQIO instruction, the write data to diskette operation ends with an error message. If the write operation is successful, the output diskette is given the same volume serial number and content as the original diskette.

Display diskette data: The display in Figure 83 on page 287 appears when you select the Display diskette data option on the Work with Diskette Data Recovery display.

286Service Functions V5R2