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-rw-r--r--doc/isolinux.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/isolinux.txt b/doc/isolinux.txt
index dd8bca5a..eca2a974 100644
--- a/doc/isolinux.txt
+++ b/doc/isolinux.txt
@@ -96,6 +96,11 @@ This image can then be copied using any raw disk writing tool (on Unix
systems, typically "dd" or "cat") to a USB disk, or written to a
CD-ROM using standard CD burning tools.
+The ISO 9660 filesystem is encapsulated in a partition (which starts
+at offset zero, which may confuse some systems.) This makes it
+possible for the operating system, once booted, to use the remainder
+of the device for persistent storage by creating a second partition.
+
++++ BOOTING DOS (OR OTHER SIMILAR OPERATING SYSTEMS) ++++