Moving a Tape or Floppy Disk Backward

The T-BCK command is used to move the tape or floppy disk backward for a specified number of records or to a previous End-Of-File mark. On floppy drives, this operation is possible in RAW-OFF mode.

Format

T-BCK [record]

Parameter(s)

record

Number of tape or floppy disk records you move back over. The maximum is 32,767. If a number is not specified, T-BCK backspaces to the previous End-Of-File mark or to the load point.

If an End-Of-File is encountered before the specified number of records are backspaced over, or if record is not specified, the tape or floppy disk is positioned before the End-Of-File mark. A T-FWD must be issued to position the tape or floppy disk after the End-Of-File mark before reading the next record.

NOTE	T-BCK is not supported on 1/4-inch tape drives.

>T-EOD

BLOCK SIZE: 16896

[92] END OF RECORDED DATA - 1 FILE(S)

Once the tape is positioned at the EOD, you can dump another file to tape.

The following example dumps the CUSTOMERS file:

>T-DUMP CUSTOMERS

BLOCK SIZE: 16896

1 AEDWA51BLA

2 SPIRS112A

3 AJOHN760JE

4 HJENK1222M

5 AMEAD251BL

6 JBROW129BO

7 BLEAR34TRE

8 JPEER89RIA

9 HJOHN455OT

10 JBOHA126TR

11 JBUCK26STO

12 HHIGG5425T

13 DEDGE338BR

14 AORLA55VEN

15 MASH912AE

16 RPIER123WE

17 BLAMP344TR

18 JMASO226RO

18 ITEMS DUMPED.