To reproduce, do something like this: Boot F18 Beta TC3 DVD Go into custom partitioning Clear out all existing partitions, so all space is free Create a 500MB /boot partition Create a / partition of any size, say you have 14GB free, create a / partition size 8GB. Now you're showing approx 6GB 'available space' Change the / partition's Device Type to LVM, hit Apply Changes Now, reduce the size of the partition - say, to 5GB - and hit 'Apply Changes' again The available space calculation goes wonky. It doesn't go up to 9GB, it goes *down* to 3GB. You can keep playing around with the size of the partition, and the 'available space' calculation will keep changing, sometimes up, usually down, but it'll rarely or never actually be correct. I have a VM open right now and I'm twiddling with this, right now it's showing a 15GB disk with a /boot partition of 500MB and a root partition of 1GB, and 5.49GB of 'free space'. (Oh, and it actually says Gb, not GB. This is completely wrong. Gb is gigabits. It should be GB or GiB, but not Gb.)
Created attachment 625302 [details] storage.log from the session where I messed around with this
anaconda-18.23-1.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/anaconda-18.23-1.fc18
Package anaconda-18.23-1.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing anaconda-18.23-1.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-17509/anaconda-18.23-1.fc18 then log in and leave karma (feedback).
anaconda-18.24-1.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/anaconda-18.24-1.fc18
Package anaconda-18.24-1.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing anaconda-18.24-1.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-17543/anaconda-18.24-1.fc18 then log in and leave karma (feedback).
anaconda-18.25-1.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/anaconda-18.25-1.fc18
anaconda-18.26-1.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/anaconda-18.26-1.fc18
This is definitely improved in current builds, I will file any other wonkiness I notice separately.