Add FAQ item of missing logs to user manual

[Dirk Hohndel: added corresponding entry to the FAQ]

Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/FAQ.wordpress b/Documentation/FAQ.wordpress
index f52b662ab..af3537426 100644
--- a/Documentation/FAQ.wordpress
+++ b/Documentation/FAQ.wordpress
@@ -118,6 +118,13 @@ Most/all Windows AV software packages support an "add exception" feature, which
 In either case, please inform your AV software vendor of a "false positive" as we assure your that Subsurface is not malware
 
 [/expand]
+[expand title="I cannot download all my dives, only the most recent ones even though my dive computer's manual states that it records history of e.g. 999 dives.]
+
+Dive history is different than the dive profiles on the log. The history only keeps track of the total number of dives and total amount of time spent below surface. The logs, on the other hand, store the dive profile, but they have limited amount of memory to do so. The exact amount of dive profiles that can be stored on the device depend on sample interval and duration of the dives. Once the memory is full the oldest dives get overwritten with new dives. Thus we are only able to download the last 13, 30 or 199 dives.
+
+If you have downloaded your dives to different dive logging software before they were overwritten, there is a high change that Subsurface can import these. However, if the logs are only on your dive computer, they cannot be salvaged after being over written by new dives.
+
+[/expand]
 [expand title="How do I download dives from my Shearwater Petrel 2 (or other Bluetooth dive computer) on Linux?"]
 
 Setting up a connection to download dives from your Bluetooth-enabled device, such as the Shearwater Petrel, is not yet an automated process and will generally require the command prompt.  It is essentially a three step process.