Révision de Root partition size based on disk size du sam, 09/13/2025 - 22:00
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The root partition is created automatically during installation when the "Erase disk and install Trisquel" option is selected.
The size of the root partition is determined during installation by the automatic partitioning scheme. From testing with different disk sizes, the following results were observed:
* 40 GiB disk → root size: 13.36 GiB
* 75 GiB disk → root size: 21.38 GiB
* 80 GiB disk → root size: 22.53 GiB
* 100 GiB disk → root size: 22.75 GiB
The values are shown with two decimals, as finer precision may vary slightly between installations. However, as shown, the root filesystem reaches its maximum practical size when the disk is around 80 GiB. Increasing the virtual disk beyond this point provides only negligible growth in the root partition. Therefore, allocating more than ~80 GiB to the disk does not significantly increase the root filesystem. 80 GiB equals 85.8993 GB, which rounds to 90 GB (nearest 5 GB), making it easier to state as a system requirement.
/dev/mapper/vgtrisquel-root is the root filesystem device when the default 'Use LVM with the new Trisquel installation' option is selected. It cannot be resized after installation—for example, booting Trisquel in live mode from a USB cannot resize it (see https://bugs.launchpad.net/ubuntu/+bug/2023637). This limitation may lead to inconvenience if the partition is too small for long-term use.
====Virtual machine testing====
You can reproduce these results or test against future Trisquel releases by setting up virtual machines with configurable disk sizes.
* Adjust the disk size variable:
os_variant=trisquel11 disk_size_gib=80
* Install Trisquel in a VM:
qemu-img create -f qcow2 ${os_variant}.qcow2 ${disk_size_gib}G
virt-install --name Trisquel-${disk_size_gib}GiB \
--os-variant $os_variant --vcpus 4 --memory 32000 \
--disk path=${os_variant}.qcow2 \
--cdrom ~/Downloads/trisquel_11.0.1_amd64.iso
* Run the script to generate the VM and start the Trisquel installer
* Complete the installation in the VM, reboot, and log in.
* In the VM, to check the exact root filesystem size (displayed in the same format as the list above, e.g. 13.3632 GiB), run:
df --block-size=1 | awk '$1=="/dev/mapper/vgtrisquel-root" {printf "%.2f GiB\n", $2/1024/1024/1024}'
