diff --git a/browse-slack/README.md b/browse-slack/README.md
index 2d585c31..1aab00fb 100644
--- a/browse-slack/README.md
+++ b/browse-slack/README.md
@@ -1,19 +1,21 @@
-To try it out (on Linux; it's unusably slow on other platforms):
+To try it out:
 
-1. Import a Slack archive into the data disk by following the instructions at
-   the top of `browse-slack/convert_slack.py`.
-
-   There's also a test disk image you can try out by running:
+1. Import a tiny test Slack archive into the data disk by running:
    ```
    tools/image-data 10 < browse-slack/test_data
    ```
 
-2. Build the code disk.
+2. Build the code disk (on Linux; see the top-level Readme for other platforms)
    ```
    ./translate browse-slack/*.mu
    ```
 
 3. Run the code and data disks:
    ```
-   qemu-system-i386 -accel kvm -m 2G -hda code.img -hdb path/to/data.img
+   qemu-system-i386 -m 2G -hda code.img -hdb path/to/data.img
    ```
+
+You should now see some text and images in Qemu. For a real Slack archive,
+follow the instructions at the top of `browse-slack/convert_slack.py`. You'll
+also want to tweak the `sector-count` in browse-slack/main.mu which affects
+the number of sectors read from the data disk.