Moving usr home to another partition
Before following this guide, make sure you:
a) have backups of your data
b) understand what you are doing
This worked fine for me but I don't promise or guarantee it will work 100% for you!
There are two ways to move /usr /home etc, the easy and the hard...
The easy way
Create a partition for each directory, let's assume /usr.
Mount the new partition: /mnt/new_partition/ (let's assume /dev/sda99)
Copy all the files in /usr to the root of the new partition like so:
Run the following IN the /usr directory:
find . -depth -print0 | cpio --null --sparse -pvd /mnt/new_partition
Now unmount /mnt/new_partition (/dev/sda99)
Rename your current /usr directory to /oldusr
Edit your fstab file to have a line like this:
/dev/sda99 /usr ext3 defaults 0 0
NOTE: You'll find that VIM, bash, etc won't work once you've renamed /usr
Once it all works, you can remove the original directories (/oldusr)
The hard way (multiple directories on same partition)
Create the new partition to hold all the different directories.
Mount the partition: /mnt/new_partition (assume /dev/sda99)
Create the new directories on the new partition, ie:
Copy the current directories over by running this in each directory:
find . -depth -print0 | cpio --null --sparse -pvd /mnt/new_partition/usr
find . -depth -print0 | cpio --null --sparse -pvd /mnt/new_partition/home
Create a new mount point on your current drive. I created this:
Edit fstab to have a line like this:
/dev/sda99 /mnt-extended ext3 defaults 0 0
Now create the following file in /etc/init.d called bind.sh:
if [ "X$1" = "Xstart" ]; then
echo "Binding /mnt-extended/usr to /usr..."
mount --bind /mnt-extended/usr /usr
mount --bind /mnt-extended/home /home
This binds each new directory to the old directory on boot up.
Now create a symlink in /etc/rcS.
Watch out! The number is important. It mustn't be called too soon or too late. I placed it at S38, ie:
ln -s /etc/init.d/bind.sh /etc/rcS.d/S38bind.sh
Finally rename /usr and /home to /oldusr and /oldhome and do:
Once it all works, you can remove /oldhome /oldusr
NOTE: do not try to move the /lib directory using this method - it won't work!
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