Note: Almost all content here will eventually be revised and merged into the live-manual. Please do not add new content to the wiki, but contribute to the manual directly.

There are times when the physical memory available to the Live environment is just not enough. To this end, a local swap space can be enabled. This page assumes you have already mounted a local disk partition as described in DebianLive/Howto/Mount_Local_Partition. 

# Pre-allocate the space to use as the swap file. The example below
#  creates a 512MB swap file on the mounted drive (count=512x1024).
dd if=/dev/zero of=/localdisk/netboot/swapfile bs=1024 count=524288
# If creating the file was successful, enable the swap file now.
if [ -f /localdisk/netboot/swapfile ]; then 
        mkswap /localdisk/netboot/swapfile
        swapon /localdisk/netboot/swapfile
fi

To make this happen automatically at boot, see this FAQ.