|>Then I had installed RedHat Linux it is cool enough but it has unpleasant
|>surprise from Disk Druid.
|>It creates too many partitions as filesystems (/, /boot, /usr, /home, /tmp,
|>/opt, /var and probably swap in your case).
|
|Back in the days of 327MB hard drivers there was a good reason to
|partition /usr and /var, usually because you had to use another
|disk to hold them. Nowadays there is rarely a good reason to
|partition these directories. There is almost never a good reason
|to partition the root disk.
1. Security. For example, you may want to prevent users from filling
up / by writing to /tmp or /var/tmp.
2. Different filesystem optimization. For example, you might want
to make some filesystems read only, and some (e.g. /tmp and/or
/var/tmp) async (and just newfs them at boot time if they don't
fsck cleanly).
3. Future OS upgrades. You may want to keep the OS on separate
partition(s) from data so that OS upgrades are easier in the
future.
4. Backups. Some backup programs work best on a filesystem basis.
Partitioning based on frequency of backing up may be done (i.e.
you may not need to back up the OS, but you may want to back up
the data every day).
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