How To Installing Partition Centos 7 effectively
my recommendation, is to do
custom partition during the install; that way you know what you are getting and you maybe can head off various shortcomings in the near/distant future....
keeping it real simple, with an EFI system, using a single disk to have the operating system installed on it the output from
mount could look like
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/dev/sda3 on / type xfs
/dev/sda2 on /boot type xfs
/dev/sda1 on /boot/efi type vfat
that is all you need, and a *df -h* shows
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Filesystem Size Used Avail Use% Mounted on
/dev/sda3 475G 28G 448G 6% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 24M 3.9G 1% /dev/shm
tmpfs 3.9G 9.7M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sda2 947M 217M 731M 23% /boot
/dev/sda1 95M 12M 84M 12% /boot/efi
tmpfs 794M 4.0K 794M 1% /run/user/42
tmpfs 794M 24K 794M 1% /run/user/0
Know that
tmpfs is mounts to RAM (memory) and not your hard disk, the tmpfs sizes will vary.
This is centos-7.6 on a 500gb ssd, I made 4 partitions total one was SWAP at 1gb which is /dev/sda4 not shown above. That way everything is under the root folder system using up the entire disk, if you run on off space then at that point
you need a larger disk and it won't be because of *partition sizes you either guessed at or let the automatic partitioning choose for you[/i]. I hate when it gives you / at 25% of the disk and the /home partition is 75% of the disk that really nukes you later on when you have lots of software and other things installed...
which is never under the /home partition