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8.8.1.10: MTRETEN

C code
struct mtop op = { MTRETEN, 0 };
result = ioctl(tapefd, MTIOCTOP, &op);

Description

Retension the tape, i.e. forward space to end of tape and rewind.


Notes

PLEASE NOTE THE FOLLOWING:

Floppy tape cartridges are particularly sensitive to stretch, always use this command at least once before writing to a new cartridge to `pre-stretch' it.

The following is taken from the Seagate TST3200 Installation manual:

Retention tape cartridges that have not been used for more than a month before restoring or backing up data. This retentioning removes unwanted tight spots that develop naturally on reeled media.

Example
mt -f /dev/nqft0 reten

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