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-rw-r--r--doc/guix.texi12
1 files changed, 8 insertions, 4 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 729ec081be..d61a5b7514 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -7877,9 +7877,8 @@ that.
The installation image described above was built using the @command{guix
system} command, specifically:
-@c FIXME: 1G is too much; see <http://bugs.gnu.org/23077>.
@example
-guix system disk-image --image-size=1G gnu/system/install.scm
+guix system disk-image gnu/system/install.scm
@end example
Have a look at @file{gnu/system/install.scm} in the source tree,
@@ -16187,8 +16186,9 @@ size of the image.
@item vm-image
@itemx disk-image
Return a virtual machine or disk image of the operating system declared
-in @var{file} that stands alone. Use the @option{--image-size} option
-to specify the size of the image.
+in @var{file} that stands alone. By default, @command{guix system}
+estimates the size of the image needed to store the system, but you can
+use the @option{--image-size} option to specify a value.
When using @code{vm-image}, the returned image is in qcow2 format, which
the QEMU emulator can efficiently use. @xref{Running GuixSD in a VM},
@@ -16251,6 +16251,10 @@ of the given @var{size}. @var{size} may be a number of bytes, or it may
include a unit as a suffix (@pxref{Block size, size specifications,,
coreutils, GNU Coreutils}).
+When this option is omitted, @command{guix system} computes an estimate
+of the image size as a function of the size of the system declared in
+@var{file}.
+
@item --root=@var{file}
@itemx -r @var{file}
Make @var{file} a symlink to the result, and register it as a garbage