NAME
rescue —
rescue utilities in
/rescue
DESCRIPTION
The
/rescue directory contains a collection of common
utilities intended for use in recovering a badly damaged system. With the
transition to a dynamically-linked root beginning with
NetBSD
2.0, there is a real possibility that the standard tools in
/bin and
/sbin may become non-functional
due to a failed upgrade or a disk error. The tools in
/rescue are statically linked and should therefore be more
resistant to damage. However, being statically linked, the tools in
/rescue are also less functional than the standard
utilities. In particular, they do not have full use of the locale,
pam(3), and nsswitch libraries.
If your system fails to boot, and it shows an error message similar to:
init: not found
try booting the system with the boot flag “
-a” and
supplying
/rescue/init, which is the
rescue init(8),
as the init path.
If your system fails to boot, and it shows a prompt similar to:
Enter full pathname of shell or RETURN for
/bin/sh:
the first thing to try running is the standard shell,
/bin/sh.
If that fails, try running
/rescue/sh, which is the
rescue shell. To repair the system, the root partition must
first be remounted read-write. This can be done with the following
mount(8) command:
/rescue/mount -uw /
The next step is to double-check the contents of
/bin,
/lib,
/libexec, and
/sbin, possibly mounting a
NetBSD
installation CD-ROM and copying files from there. Once it is possible to
successfully run
/bin/sh,
/bin/ls, and
other standard utilities, try rebooting back into the standard system.
The
/rescue tools are compiled using
crunchgen(1), which makes
them considerably more compact than the standard utilities.
FILES
- /rescue
- Root of the rescue hierarchy.
SEE ALSO
crunchgen(1)
HISTORY
The
rescue utilities first appeared in
NetBSD
2.0.
AUTHORS
The
rescue system was written by
Luke
Mewburn
<
lukem@NetBSD.org>.
This manual page was written by
Simon L. Nielsen
<
simon@FreeBSD.org>,
based on text by
Tim Kientzle
<
kientzle@FreeBSD.org>.