The biggest mistake users make is downloading ISOs to manually install operating systems inside EVE-NG. This is slow and wastes space. The "better" way is to download .
qemu-img info image.qcow2 # Look for: virtual size, disk size, file format (qcow2) eveng qemu images download better
qemu-img convert -O qcow2 -c original.qcow2 compacted.qcow2 The biggest mistake users make is downloading ISOs