is there any way i can mount a folder to anoter?

im askng cuz im on knoppix, and i wanna configure my apache server, then copy the folder to /dev/hda1 so i mount to it later, over the old apache files, so i can run it again w\o configs....... is this possible?

If you are asking if you can mount a partition over a folder, then yes.

# pwd
/
#df -k /export/home
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c0t0d0s0 961257 509377 394205 57% /
# ls -l /export/home
ls -l /export/home
total 2
drwxr-xr-x 6 unixops sysadmin 512 Jul 10 09:29 unixops
#
mount /dev/dsk/c0t0d0s6 /export/home
# df -k /export/home
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c0t0d0s6 480620 9 432549 1% /export/home

# ls -l /export/home
total 16
drwx------ 2 root root 8192 Sep 20 2002 lost+found


Note that mounting c0t0d0s6 over /export/home, the unixops directory is no longer seen. Once the mount point is unmounted, the unixops directory will be accessible.

As far as will this work with what you are attempting to do, I'm not sure I fully understand that problem. I don't see any harm in trying it since you should not be removing anything.