Adding new HDD

Micik · 02-22-2019, 03:15 AM

I want to add new HDD to existing linux machine. I don't have GUI environment and all commands I need to carry out in CLI.
Existing Linux machine has one SCSI HDD and this drive is recognized as -dev/sda.
Now I want to add another HDD SATA and this drive should be recognized as /dev/sdb.
I know I need to use fdisk and mke2fs or mkfs commands to format the drive.

After physically adding the drive and boot Linux OS, what s the first step to be sure that drives is recognized by linux?
Is it fdisk?

Thank you

camorri · 02-22-2019, 03:29 AM

lsblk will list the drives, and the partition(s).

It will look similar to this:

Code:

lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 223.6G  0 disk 
|-sda1   8:1    0    20G  0 part /
|-sda2   8:2    0     3G  0 part [SWAP]
`-sda3   8:3    0 200.6G  0 part /home

You will have to make a mount point, edit /etc/fstab and add each partition you want mounted at boot time. Issue a mount command for each partition will save booting the system.

fatmac · 02-22-2019, 03:53 AM

After installing the disk into the machine, when you restart, run dmesg, it will tell you how it is being seen by the system.

Then use fdisk, or cfdisk, to put an MBR on it, partition it how you want, save it to disk, then write your new file system(s) to your new partition(s).

Personally I'd use ext4, unless you need ext2 for some specific reason.

Micik · 02-22-2019, 06:23 AM

Thank you guys!
I have used fdsik -l and it did show me two HDDs. I have used fdisk interactively to create partition and swap.
I didn't have to edit fstab file.