I do have another partition free, about 4 GB enough for a slack-current (install everything should only be 2GB).
So this is how I install a fresh slackware-current without to burn a CD:
The answer is slackware is confortable to install from harddisk/partition, as long as u have the subdir slackware (containing a ap d e f k kde kdei l n t tcl x xap y) from the install-CD somewhere on the harddisk.
I've downloaded from within w2k on the ntfs partition, this partition is mounted on /mnt/nt1, as stated above further:
# mount -o loop -t iso9660 /mnt/nt1/slackware.iso /mnt/iso
caused an IOCTL error, I just copied that iso into my old slack9 / partition, n mounted it with "mount -o loop -t iso9660 /slackware.iso /mnt/iso". Then I can copy the /mnt/iso/slackware to /
Create the bare.i bootdisk, n other 2 rootdisks (install.1,install.2), boot with the bare.i (dun need any parameter by me), insert rotdisks by prompt ..
mount that old-slack9 partition somewhere on the tree e.g. /z (but not into /mnt), remember the directory containing (a, ap, d, e, f, k ..), in the case must be in /z/slackware.
Activate my swapspace: # swapon /dev/hda6 (can be done within setup),
then run setup, select "select from a premounted directory, enter /z/slackware", then it is like when installing from a CDROM, only faster (reading from harddsik is faster than from CD).
At the end by installing a boot kernel, I can only choose install kernel from bootdisk (have to enter the bare.i diskett again). I had the option to choose kernels from the CDROM, but the CDROM was not mounted, after sucessed installation, I tried to mount that slackware.iso from the oldslack partition somewhere on the tree of the running installation-slack, it worked. There it must be possible also to mount that slackware.iso using mount -o loop -t iso9660 /mnt/cdrom. That is the place where a real install-CD is mounted. Then I ll have the option to choose options the 2.4.21-kernels from the CDROM (mounted iso), I bet ..
So far am currently on that slack-current noGnome 8.05GB, look nice with xfce .. Actually an image of noGnome+noKde in http://zuul.slackware.biz/..
would be not that bad next time ..
After first login, cd /etc/rc.d
chmod 644 rc.nfsd, rc.sendmail, rc.news, rc.sshd prevent the kernel from loading not neccessary daemonds, should save some RAM ..
Reboot, startx then am here ..