Wipefs: improve --all descriptions for whole-disks

Addresses: https://github.com/util-linux/util-linux/issues/3544
Signed-off-by: Karel Zak <kzak@redhat.com>
(cherry picked from commit 1806792d4fd4928e09228ca6cc776fb46b196d89)

diff --git a/misc-utils/wipefs.8.adoc b/misc-utils/wipefs.8.adoc
index 88efaeca5b318a78eb5f3e45bb7b60937890b934..1cfa333d1747f4abe7f3459969e2292fd8aa7dc9 100644 (file)
--- a/misc-utils/wipefs.8.adoc
+++ b/misc-utils/wipefs.8.adoc
@@ -38,7 +38,10 @@ Note that by default *wipefs* does not erase nested partition tables on non-whol
 == OPTIONS
 
 *-a*, *--all*::
-Erase all available signatures. The set of erased signatures can be restricted with the *-t* option.
+Erase all available signatures. The set of erased signatures can be restricted
+with the *-t* option.  When performed on a partitioned whole-disk device like
+/dev/sdX, it will erase only the partition tables, not the content of the
+partitions.
 
 *-b*, *--backup*[**=**_dir_]::
 Create a signature backup to the file _wipefs-<devname>-<offset>.bak_ in _$HOME_ or the directory specified as the optional argument. For more details see the *EXAMPLE* section.