* An ISO, to be burned to a physical cd or used as an image to install a virtual machine.
* A bootable USB disk-key image (minimum 2G USB stick needed)
-* A GUI bootable USB disk-key image with a full X environment (minimum 4G USB stick needed).
+* A GUI bootable USB disk-key image with a full X environment. Minimum 4G USB stick needed. Some sticks
+labelled as "4GB" actually provide just something like
+3.88e9 bytes, short of any reasonable "4GB" value.
+The image is pretty crammed towards "4GB", you better check actual sizes before the large download.
The release ISO images should be available on most of the [[mirrors|mirrors]]. If the ISO is not available on a certain mirror, please try another one or download it from the DragonFly master site. Each image is in the "Live CD" format, meaning that it boots into a running and fully functional DragonFly system, which can be used for testing or system recovery tasks as well as installation
## DragonFly 2.10 Special Installation and Upgrade Notes
-**Using deduplication** - Hammer volumes need to be upgraded to version 5 to use deduplication. The 'hammer version-upgrade <filesystem> <version>' command will perform this in-place.
+**Using deduplication** - Hammer volumes need to be upgraded to version 5 to use deduplication. The 'hammer version-upgrade <filesystem> <version>' command will perform this in-place. To enable periodic deduplication, run 'hammer viconfig' on each PFS and add the line 'dedup 1d 5m'.
**APIC_IO** - The APIC_IO kernel option can now also be controlled via the hw.apic_io_enable /boot/loader.conf tunable. The kernel option simply specifies the default now.
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