How much storage is enough for my system?

[hariskar]

At he time I have a multiboot PC: Windows 11, Gentoo, Linux From Scratch.
I tried to experiment with fog, so I installed it on an old Intel NUC with 256GB disk space and debian 12 which is no enough even to capture my smallest OS LFS. How much disk space do I need to store the images? Would you suggest to extend this NUC or get another PC?

hk@lfs [ ~ ]$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda           8:0    0 931.5G  0 disk
├─sda1        8:1    0   100M  0 part
├─sda2        8:2    0    16M  0 part
├─sda3        8:3    0 296.9G  0 part
├─sda4        8:4    0 633.9G  0 part
└─sda5        8:5    0   645M  0 part
sdb           8:16   0   1.8T  0 disk
├─sdb1        8:17   0 183.8M  0 part /boot
└─sdb2        8:18   0   1.8T  0 part /
sdc           8:32   1  59.8G  0 disk
nvme0n1     259:0    0 931.5G  0 disk
├─nvme0n1p1 259:1    0   256M  0 part
├─nvme0n1p2 259:2    0    32G  0 part [SWAP]
└─nvme0n1p3 259:3    0 899.3G  0 part

[george1421]

@hariskar It looks like your root partition ‘/’ has 1.8T or 1800GB of space. The command I would have run is df -h to give you usage. but assuming that debian is less that 50GB you should have plenty of space to capture a modern computer with 50GB of data. Use single disk resizable to use zstd to compress that 50GB of data down even smaller.

What error message are you getting? A screen shot of the error might help set the context of the error.