I had the same symptoms on my Asus m2a-vm hdmi (AMD 690G) board. I tried the i386 and AMD64 iso and neither worked from install from boot or install from live ubuntu. I wouldn't say that the prepare partitions screen hung, rather that the list of partitions/devices was empty.
In my particular case, the problem is to do with RAID. My board supports RAID, but I have it set to use IDE controller in the bios. I think the installer on live CD seems to see my (disabled) raid support and lists only raid partitions (I have none). For me the solution was to download the alternative text based installer which provides an additional install screen asking whether to look for raid partitions. If I choose 'yes', I get no devices/partitions. If I choose 'no', I see my partitions and the install can be successfully completed. The odd thing is that the live ubuntu can see the partitions, but the live installer cannot. -- Live install step "Prepare partitions" hangs on 9.10-beta 64bits https://bugs.launchpad.net/bugs/448316 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
