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Old 09-06-2004, 05:57 PM   #1
Registered: Jul 2003
Location: Illinois
Distribution: Fedora 11, Ubuntu 9.04
Posts: 80

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Question separate /usr from root fs

distro->fedora core 2

What is the best way to separate /usr from the "/" (root) filesystem?

Right now /usr is included in the / filesystem, and /usr seems to be a good chunk of space.


Below is the df -k output

Filesystem 1K-blocks Used Available Use% Mounted on
/dev/hda2 10078852 7319220 2247644 77% /
/dev/hda1 524292 18384 479276 4% /boot
none 193592 0 193592 0% /dev/shm
/dev/hda3 3023640 601096 2268952 21% /home

/dev/hdb1 7441112 20 7063096 1% /main
/dev/hdb2 7441144 20 7063124 1% /extra
/dev/hdb3 7441144 436340 6626804 7% /backup
/dev/hdb4 16147568 20 15327288 1% /storage
Old 09-06-2004, 07:44 PM   #2
Registered: Jul 2004
Location: Chennai, India
Distribution: UBUNTU 5.10 since Jul-18,2006 on Intel 820 DC
Posts: 843

Rep: Reputation: 201Reputation: 201Reputation: 201
Using cfdisk or some other tool, split hdb1 or hdb2 into required partitions.
Mount the new partition as /usrnew - say
Using `find` all in /usr, piped to `dd`, copy all /usr to /usrnew.
Change the mount point of /usrnew to /usr.
Rename /usr (under hda2) as /usrold - say.
Reboot the system to be sure (or umount and remount).
After a reasonably safe period, remove /usrold.

I expect that the whole thing can be achieved by your favourite GUI tool.




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