Get new partition

yzhong · 01-14-2009, 06:36 PM

If I want to get more partitions on a system (centos 5.2, the system only have 1 disk and some unallocated space on this disk),
do I need to boot into rescue mode and use fdisk/parted to add partitions? (or just run this command directly not need to go to rescue mode)

pixellany · 01-14-2009, 08:15 PM

Just open a terminal, enter "su" to become root, and then run the partitioner.

The only restriction is that you can't re-size the partition you are running from. When you are in the terminal, run "mount" to see what partitions are in use.

yzhong · 01-14-2009, 08:27 PM

Thanks,I think so.
The reason I ask this question is I just read
...
Do not attempt to create a partition on a device that is in use.
Before creating a partition, boot into rescue mode (or unmount any partitions on the device and turn off any swap space on the device).
...
in the redhat manual
see:
https://www.redhat.com/docs/en-US/Re...eate-part.html

pixellany · 01-14-2009, 08:31 PM

Three truisms:

1. You can safely create new partitions on a drive you are running from.

2. You cannot go wrong by following RedHat's instructions

3. You should backup your data before following **anyone's** instructions

Cottsay · 01-14-2009, 09:43 PM

for non-system partitions, make sure if you edit that partition, you unmount it first

--scott