> > As far as I know (I'm an Ubuntu user, with a little experience) you canHuh? Why does it need to write the partition table? LUKS causes
> choose between automatic and manual partitioning; partitioning options are
> shown here: https://help.ubuntu.com/community/GraphicalInstall and the
> partition step in the installation process is fully described here:
> https://help.ubuntu.com/10.10/installation-guide/i386/module-details.html#di-partition
>
> If you choose automatic partitioning, you will lose the content of your
> disks, but the system warns you; if you choose manual partitioning and
> delete the dm-crypt partitions to make new ones, I don't see how the
> installer can warn you, aside from telling you you're destroying a partition
> (and if you choose manual partitioning, you should know what can happen,
> otherwise you shouldn't use it).
>
> In order to use encrypted disks, the installer needs to write the partition
> table: before doing it, it warns you that when writing the partition table
> changes will be written on the disk and you may lose your data.
no such requirement...
The alternate installer provides you with a "Prepare encrypted disks" option (something like this, I don't remember the exact name); You create your partitions and select the "physical volume for encryption" filesystem type ; then you choose the "Prepare encrypted disk" option and the installer writes the partition table, asks for which partitions you want to encrypt and makes you choose passphrases.
Then it shows you new "disks" that are your encrypted partitions; inside of those "disks" you can create your ext{2,3,4}/FAT/ReiserFS/etc. partitions (screenshot of what I mean, taken from Google Images: https://learninginlinux.files.wordpress.com/2008/04/dscf0021mod.jpg)
I think this happens because the right partitions are needed to use the device mapper and create filesystems in which the system can be installed
Then it shows you new "disks" that are your encrypted partitions; inside of those "disks" you can create your ext{2,3,4}/FAT/ReiserFS/etc. partitions (screenshot of what I mean, taken from Google Images: https://learninginlinux.files.wordpress.com/2008/04/dscf0021mod.jpg)
I think this happens because the right partitions are needed to use the device mapper and create filesystems in which the system can be installed
I think this is something else. But I would not know.
> In _my_ opinion, the process is quite clear. I see that there may be
> problems, but, well (and with this I don't mean to offend anybody, because I
> made really stupid mistakes with encrypted partitions) if you don't read
> what you're doing, it's not an Ubuntu problem; like if you type that
> uppercase YES while luksFormat-ting a partition and then complain that it
> should have warned you better...
Then I don't know, either. But I think that when choosing the alternate installer (which is more advanced than the graphical one) you should know you're using an "expert" tool..
I'm attaching a few screenshot I found on GI of what the installer does
Main menu: http://www.linuxlog.org/wp-content/uploads/2011/01/Ubuntu-64-bit-@xxxxxxxxxxxxxxxxxxxxxx
Main menu (manual partitioning): https://help.ubuntu.com/community/Installation/SoftwareRAID?action="">
Partition usage list: http://www.phoronix.net/image.php?id=ubuntu_1010_btrfs&image=ubuntu_1010_btrfs1_med
Partitioning confirmation: http://members.iinet.net.au/~herman546/p2.2/2_006-confirm-partitions.png
Partition schema with dm-crypt and LVM: http://static.screencasts.ubuntu.com/videos/20070910_installing_ubuntu_part_2_427x240.png
Hope this may help.
Claudio
I'm attaching a few screenshot I found on GI of what the installer does
Main menu: http://www.linuxlog.org/wp-content/uploads/2011/01/Ubuntu-64-bit-@xxxxxxxxxxxxxxxxxxxxxx
Main menu (manual partitioning): https://help.ubuntu.com/community/Installation/SoftwareRAID?action="">
Partition usage list: http://www.phoronix.net/image.php?id=ubuntu_1010_btrfs&image=ubuntu_1010_btrfs1_med
Partitioning confirmation: http://members.iinet.net.au/~herman546/p2.2/2_006-confirm-partitions.png
Partition schema with dm-crypt and LVM: http://static.screencasts.ubuntu.com/videos/20070910_installing_ubuntu_part_2_427x240.png
Hope this may help.
Claudio
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