I was installing Ubuntu 8.04 RC1. In the partitioner in the installer, I chose manual setup (as opposed to guided setup). I created a scheme that's shown on the screenshot attached. The error message in the screenshot does not make sense. It read "Some of the partitions you created were too small. Please make the following partitions at least this large (in bytes). ....." (text ommited, the minimum size was approx. 2 GB). It's strange since the root partition is approx. 12.5 GB large. Swap is 550MB, but the RAM in the machine is 512MB (Actually this was a VMware Fusion virtual machine, and the size memory on host OS is 2GB). However, ignoring the message (hitting "Continue") and installing worked fine. I even tried to "Hibernate" the virtual machine (System > Log out > Hibernate), and it worked fine, so the complain probably does not make sense even for swap partition, which is 550 MB.
To sum up:
* the message is incorrect
* the message, if correct, should say which exact partition is small
* the message should include a human readable size as well (i.e. "2 GB" instead of "1999316992" - it's hard to deduce quickly if it's in scale of 10^9 or 10^10 or 10^8 ...)
1. Yes, that is quite odd. Please stick `set -x` in the top of /lib/partman/
2. It tells you which mount point is too small. I think that's suitable, but why do you think that the device name would be better?
3. Indeed, I had hoped to fix that in this release cycle, but I missed the string freeze cutoff so it will have to wait for 8.04.1 or 8.10.