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Try to change the default minimum size of / partition for partman



Hello Debian team,

I am Patrick the main developer of Emmabuntüs GNU/Linux distribution : http://en.wikipedia.org/wiki/Emmabunt%C3%BCs, and I developed a new version of Emmabuntüs based of Debian Jessie : http://emmabuntus.sourceforge.net/mediawiki/index.php/June_20_2016_the_new_Emmabuntus_DE_is_standing_up

On this version when we use the partition "Guided - use entire disk", and after selection "Separate /home Partition", the partitioner make these partitions :

#1 primary 10 GB      ext 4    /
#5 logical   2,9 GB     swap
#6 logical   67,2 GB   ext4     /home


The problem is the Emmabuntüs ISO is very big and the size of ISO is 3,9 GB and the system when is install take 9,5 GB on a partition of 10 GB.

I try to modify the schema partition on preseed file because I not find the name of recipe files for control partman-auto : http://ftp.dc.volia.com/pub/debian/preseed/partman-auto-recipe.txt

I put this line on my preseed file to change the size of / :

d-i partman-auto/expert_recipe string partman-auto/text/home_scheme :: 10000 15000 30000 ext4 $primary{ } $bootable{ } method{ format } format{ } use_filesystem{ } \ filesystem{ ext4 } mountpoint{ / } . 512 1024 300% linux-swap method{ swap } format{ } . 5000 10000 1000000000 ext4 method{ format } format{ } use_filesystem{ } \
filesystem{ ext4 } mountpoint{ /home } .

This line work but with this line, the "Separate /home Partition" menu disappear, and the user don't have the three mode for "Guided - use entire disk" partitioning.

My question is : It is possible to change the default minimum size of / partition for partman-auto, and what the method to change this size ?

Thank for your help.

Best regards,

Patrick


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