ok this should be possible.
the lvm partition/s will have to be treated differently from regular.
on the live disc, open terminal and paste in or replace nautilus with whichever file manager you are using,
find and copy your files to an external device or burn to data cd/dvd with k3b.
for the remaining lvm:
open terminal again
1. Install lvm2
Code:
sudo apt-get install lvm2
2. Load the necessary module(s)
Code:
sudo modprobe dm-mod
3. Scan your system for LVM volumes and identify in the output the volume group name that has your volume
4. Activate the volume
Code:
sudo vgchange -ay MyVolumeGroupName
replace MyVolumeGroupName with the result from previous command.
5. now go into the file manager and click the lvm drive(s), this will mount them and ask for password, provided you know the password, you should be able to access and navigate to the files.
if any permission problems happen, try opening the file manager with root privileges using
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