I am trying to build lfs version 5.0.
Maybe I shouldn't have, but I didn't save my binutils directory, so I re-did it after chapter 5:
# Re-installation of Binutils
cd /mnt/lfs/lfs-5.0-packages
bzcat binutils-2.14.tar.bz2 | tar -xv
cd binutils-2.14

mkdir ../binutils-build
cd ../binutils-build
../binutils-2.14/configure --prefix=/tools \
--enable-shared --with-lib-path=/tools/lib
make
make check
# If there is a failure, it would look like this:
# make[1]: *** [check-binutils] Error 2
make install
make -C ld clean
make -C ld LIB_PATH=/usr/lib:/lib
# End of re-installation

Question 1 - was this a mistake? If so, do I have to start all over again?

In chapter 6, I followed the rules, and came to the Installation of the kernel headers. I unpacked linux-2.4.22, and did the following:
cd linux-2.4.22
chown -R 0:0

this didn't work, so I entered:
chown -R 0:0 /tools
and this worked.
Then I entered:
make mrproper
and this message came up:
root:/tools/lfs-packages-5.0/linux-2.4.22# make mrproper
/bin/sh: line 1: sed: command not found
Makefile:259: arch//Makefile: No such file or directory
make: *** No rule to make target `arch//Makefile'. Stop.
Question 2
Was this related to Question 1, and if not, what can I do?
Should I just start all over again?
Thanks - Peter

try to make mrproper in the /binutils-build folder

I'm sorry. It should be /linux-version folder not the binutils-build folder. Got mixed-up. The version is the linux version u are using. Does it help?

Seems like a typo to me. It shouldn't say arch//Makefile
Check your typing, its easy to make a mistake.

Is sed installed? Is it in your path?
Try "chown -R root:root ." or "chown -R 0:0 .". If you installed glibc already, typing root:root will work. Note that you have to give chown the file/directory to be chowned.

Thanks for the replies.
I did the right thing, swallowed my ego and keen sense of 'gotta gedditdonetoday', scrubbed it and started all again.
I managed to complete the whole damn thing in one session, by taking it slowly.
I think the help in the book is probably set at the right level - obviously every man (woman) and his/her dog it going to do a lfs before they are quite ready. It's always a good way to learn in my experience, but obviously a bit of a hassle of the gurus out there.
I'm now starting blfs - which seems to be the real task, but it's a hassle because I can't get my USB ADSL Speedtouch talking - but that's another forum, I guess - I've downloaded all the gunk on pppoe and ppoa - aint life fun.