This project is incomplete... and will likely remain incomplete since since Sony killed OtherOS.
Used Ubuntu 10.10 for PS3, obtained here:
But you probably want:
Backed up PS3 game save-data to external usb hdd.
Re-partitioned PS3 internal hdd, with 10G reserved for "Other OS".
Booted and installed Ubuntu. Took forever.
Had to use an experimental build of petitboot from Geoff Levand:
Normal petitboot binary wouldn't work, probably because of ext4 default in karmic.
Side note: the stable petitboot binary (http://ozlabs.org/~jk/projects/petitboot/downloads/bin-0.2/otheros.bld) is distributed uncompressed. This doesn't work for loading it via the XMB - need to gzip it first.
Configured wpa_supplicant manually. Removed network-manager.
Adventures with Logitech Mediaboard Pro(tm).
Realized there's only 256M or RAM... yikes. Installed openbox and killed off anything else that's memory intensive.
And... then I stopped working on this. The low memory makes this pretty unsuitable for a general purpose Linux OS (even if you're just web browsing). I think it would be usable as a media player if I could get an spu-medialib version of mplayer working. I'd also like to experiment a bit to see if rtorrent's memory footprint would be too big.
AND THEN... Sony killed OtherOS. Jerks!