# nt_upgrade command

The nt_upgrade command upgrades any
d3 dataset with current changes. It first runs a pre-upgrade routine,
then the upgrade, and finally a nt_postupgrade procedure.
All D3 processes must be logged off.

The nt_upgrade procedure can only be
run from the ’dm’ account after a D3 service pack installation. The
upgrade script is imported into the dm’s master dictionary by entering
the following:

```
copy dos:. nt_upgrade (o
to:(md
```

## Syntax

```
nt_upgrade
```

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Source: https://d3codex.com/tcl/nt-upgrade-command/ - part of the D3Codex reference.