And I’m started with Linux from Scratch! Here are some helpful pointers for anyone considering running LFS on their own. Caution: this is highly nerdy and keyworded to hell to hopefully allow your favourite search engine to grab solutions from this post.
Getting Started, AKA: Use a Distribution You Know
LFS needs an existing Linux environment. Don’t try and use unetbootin on the LFS liveCD (I used lfslivecd-x86_64-6.3-r2145-min.iso to get started, but there is a newer revision 2160 available on one of the mirrors.) unetbootin in this configuration is just a bag of hurt and you’ll spend an inordinate amount of time trying to get your root volume to work, so just burn a CD.
If I was building LFS again I’d have started from a stable Debian base or other Linux distribution where I’m comfortable and have network access – there are a number of reasons below I suggest this, but you really want your host system kernel to be 2.6.25 or higher.
Make sure to have all the patches from linuxfromscratch.org/lfs/view/stable/chapter03/patches.html are downloaded and in a location you can access from your host distribution. USB sticks are OK for this if you don’t have network access (mount the stick, and then copy the patches and packages to the sources directory). Use DownThemAll or a similar mass downloading application/extension on the patches page to save time and grief.
Watch What You Mount
Augh, out of space! It’s quite possible to mount /mnt/lfs on two partitions at the same time by missing a directory, like this:
$ mount /dev/sdb3 /mnt/lfs $ mount /dev/sdb1 /mnt/lfs
Oops – I missed /boot at the end of the second mount command. To confirm this before copying any files, “mount” should show only one partition active at /mnt/lfs. Since my /dev/sdb1 partition was only 200MB I got to the GCC extraction step and was promptly disappointed. I ended up unmounting everything, recreating the filesystem (mke2fs -v /dev/sdb1) and then remounting (mkdir -pv /mnt/lfs/boot; mount -t ext2 /dev/sdb1 /mnt/lfs/boot).
For more tales of installation havoc, keep reading…
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