diff --git a/LICENSE b/LICENSE
index fd6e542..268c9ba 100644
--- a/LICENSE
+++ b/LICENSE
@@ -5,21 +5,20 @@ Copyright (c) 2026, Simon Dick
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
 
-1. Redistributions of source code must retain the above copyright notice,
-   this list of conditions and the following disclaimer.
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
 
 2. Redistributions in binary form must reproduce the above copyright notice,
    this list of conditions and the following disclaimer in the documentation
    and/or other materials provided with the distribution.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS IS"
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/devsoak.readme b/devsoak.readme
index 16f1a6a..149dd31 100644
--- a/devsoak.readme
+++ b/devsoak.readme
@@ -6,6 +6,19 @@ Version:      0.1
 Architecture: m68k-amigaos >= 3.0; m68k-aros
 Requires:     68000
 
+*** WARNING: THIS IS A DESTRUCTIVE TESTING TOOL ***
+
+devsoak deliberately overwrites every sector in the range you point it at,
+issues edge-case and malformed commands, and drives a driver to its
+limits for hours at a time. It is built for developers and testers who
+understand block device internals and have deliberately chosen a sector
+range, partition, or whole device they do not mind losing. Point it at
+the wrong unit number and it WILL destroy live data - there is no
+confirmation beyond the -y flag you pass it yourself, and no undo.
+
+If you are not comfortable identifying your target device's unit number
+with certainty, back up first, or do not run this tool.
+
 devsoak is a destructive correctness and soak tester for trackdisk-style
 AmigaOS block device drivers. One run answers two questions: does every
 command the driver accepts do the right thing - including the edge cases
@@ -28,13 +41,13 @@ This release ships:
                      see README.md's Quirks section); devsoak looks for
                      this file beside its own binary
 
-devsoak is destructive: it will overwrite the sector range you point it
-at. Never run it against a range holding data you want to keep.
-
 Requirements
 ------------
-  - AmigaOS 3.0+ (KS 1.3 is also supported at reduced dialect coverage)
-    or AROS m68k, 68000 or better.
+  - AmigaOS, Kickstart 1.3 or later, or AROS m68k, 68000 or better.
+    devsoak probes the driver under test at startup and exercises
+    whichever command dialects (CMD/ETD/TD64/NSD/NSD-ETD) it actually
+    advertises - so a 1.3-era driver simply advertises fewer dialects
+    itself, rather than devsoak testing less on 1.3.
   - A block device to test, and a sector range on it you do not need.
 
 Quick start