NOTE: I changed the subject from "remaster_0.1-6 scripts not working with Knoppix 4.0.2 CD"
to "remaster_0.1-6 script fails with long device-path-names" to better reflect the problem.

I tried to remaster Knoppix 4.0.2 CD using remaster_0.1-6 scripts from http://debian.tu-bs.de/knoppix/remaster/ but it fails at the beginning.

(you can skip to the "Real problem?" if you don't want to know exact steps)

Here are the exact steps:

===== BOOT =====
Boot Knoppix from 4.0.2 CD using
Code:
knoppix gmt lang=fi
===== INSTALL LVM2 SUPPORT =====
I'm using LVM2, so I'll first install it from the packages I have on hd.
Code:
su
cd /mnt/hdb1/mydata/LVM2
modprobe dm-mod
dpkg -i lvm-common_1.5.17_i386.deb
dpkg -i lvm2_2.01.04-5_i386.deb
lndir /lib/lvm-200/ /usr/sbin/
vgscan
vgchange -a y
===== MOUNT =====
Then I create and mount the main directory where I'm going to work.
Code:
mkdir /data
mount /dev/LVM/data /data
cd /data/knx
===== START REAL REMASTERING =====
(http://www.knoppix.net/forum/viewtopic.php?t=12530)
(http://www.knoppix.net/forum/viewtopic.php?t=13867)

get remaster_0.1-6.tar.gz, and unpack
Code:
tar xvzf remaster_0.1-6.tar.gz
mv remaster-0.1 scripts
Create new remaster
Code:
cd scripts
vim KNOPPIX.build/remaster_config
mkdir /data/knx/remaster
./knoppix-remaster /data/knx/remaster
Do you want to create a new remaster? - YES
The script needs a place where it can store... - OK
Select new remaster directory - (accept default /data/knx/remaster and press OK)

At this stage I get this error on console (translated from finnish)
Code:
mount: /data/knx/scripts not found from /etc/fstab, or /etc/mtab
And at the same time I get the following message in Error-dialog
Code:
Error: Remounting rw,suid,dev of failed.
Do you want to try again?
[Yes] [No]
Real problem?

The knoppix-remaster script has these lines:

Code:
110 remaster_check_mount_options()
111 {
112 	REMASTER_MOUNT_DEV=$(df "$REMASTER_CHOICE" | tail -1 | cut -d" " -f1)
113 	# we have to remount right ...
114 	mount -o remount,rw,suid,dev "$REMASTER_MOUNT_DEV" 
-->     || remaster_error_yesno $"Remounting rw,suid,dev of $REMASTER_MOUNT_DEV failed."
115 }
And because there was nothing between words "of failed", $REMASTER_MOUNT_DEV is clearly empty here.

I'm not sure how that script should be rewritten to make it work, and why it is failing now but not before.