virtual box disk spacke 32 gb,memory 512 mb,set slackware iso as dvd option
use cfdisk and use dos for partition, main partition write and swap partition write
type setup
select target as main partition use dvd as source and start installing
format the partition
select ext4 as file system
select source install from slackware cd or dvd
select standard packages and full install
select boot manager as LILO and option simple
select standard as screen resolution
set UTF-8 text console as No
select LILO on MBR
select imps2 as mouse port
enter machine name
enter domain name
select network protocol DHCP
select startup services
select timezone
select window manager
set root password and reboot
If u want to configure further later
type netconfig
select dhcp if using virtualbox otherwise set static ip
type xorgsetup
simple menu driven configuration script that auto-detects most hardware