---
name: "nvram"
section: "8"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd", "macos"]
url: "https://new.carta.tech/nvram"
---

# nvram(8)

display or modify contents of the EEPROM or NVRAM

## NAME

**nvram** – display or modify contents of the EEPROM or NVRAM

## SYNOPSIS

**nvram** **-p**

**nvram** \[**-d** *name*\] *...* \[*name*=*value* *...*\]

## DESCRIPTION

The **nvram** utility provides an interface for displaying and changing the system's configuration variables contained in EEPROM or NVRAM. In the first synopsis form, all available configuration variables and their current values are printed. In the second form, the variable selected by *name* is either removed or its value is changed to the *value* following by ‘=’ sign.

The following options are available:

- **-d** *name*

  Delete the variable selected by *name* from the EEPROM or NVRAM. The **-d** flag can be specified multiple times, in which case multiple variables will be removed.

- **-p**

  Print all available configuration variables and their current values.

## EXAMPLES

Print all available configuration variables and their current values:

```
nvram -p
```

Remove the variable named *local-mac-address?*:

```
nvram -d local-mac-address\?
```

Set the value of the *local-mac-address?* variable to “true”:

```
nvram local-mac-address\?=true
```

Note that the ‘\\’ in the above examples is used to keep the shell from interpreting the ‘?’.

Remove variables named *foo* and *bar* and set variable named *baz* to “100”:

```
nvram -d foo -d bar baz=100
```

## SEE ALSO

[powermac\_nvram(4)](/powermac_nvram/4.md)

## HISTORY

The **nvram** utility first appeared in FreeBSD 7.0. It is inspired by the Darwin/Mac OS X **nvram** utility.

## AUTHORS

Maxim Sobolev ⟨*sobomax@FreeBSD.org*⟩