Having similar problem: i see only half of my drives in "Allocate Drive Space" dialog.
/dev/sda/ - raid disk, Gparted:visible, Installer GUI: invisible /dev/sdb/ - standalone disk, Gparted:visible, Installer GUI: visible /dev/sdc/ - standalone disk, Gparted:visible, Installer GUI: invisible /dev/sdh/ - raid disk, Gparted:visible, Installer GUI: invisible /dev/sdi/ - raid disk, Gparted:visible, Installer GUI: visible Using: Ubuntu 10.10 raid: Silicon Image SiI Attaching my syslog too: may be it will help. ** Attachment added: "syslog" https://bugs.launchpad.net/ubuntu/+source/partman-auto-raid/+bug/643175/+attachment/1703790/+files/syslog -- During Install my drives were not seen on the "Allocate Drive Space" dialog; however, they are seen when I run the alternate CD and answer "No" to the question about RAID information detected https://bugs.launchpad.net/bugs/643175 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs