3-1 [Configure Local Storage] Partitions on MBR and GPT Disks

Question 1

fdisk

Answer 1

Used to create master boot record-based partitions

Question 2

gdisk

Answer 2

Used to create GPT-based partitions

Question 3

MBR

Answer 3

disk can be only up to 2 TB in size as that is partition’s max
only 4 primary partitions

Question 4

GPT

Answer 4

Means GUID Partiton table
because every partition has its own GUID associated

disk can be parted up to 128 partitions (no need for distinguishing between primary, extended, and logical partitions)
8 zebibyte (which is a lot) per partition

Question 5

dd if=/dev/xvda of=/root/diskfilename bs=1M count=1

cp /etc/fstab /root/fstabcopy

Answer 5

Easy to revert to initial disk, after using it for practice
save first megabyte of raw blocks as a new file

make a copy of fstab

Question 6

fdisk /dev/xvda

p to see avalable space
n for new partition
p for primary partition or pick diff (e for extended partition, used to make logical partition)
enter to accept defaults
+number(with K, M, or G) for partition size
decide, linux, linux swap, linux lvm

update in-memory kernel table: for it to take effect
partprobe /dev/xvda

Answer 6

how to make mbr partition

Question 7

fdisk -l

Answer 7

list MBR partitions

Question 8

echo $?

Answer 8

check if last command exited successfully

successful if 0 is returned

Question 9

what is command

partprobe /dev/xvda

Answer 9

Is a program that informs the operating system kernel of partition table changes, by requesting that the operating system re-read the partition table

Question 10

fdisk

Sector default begins at 2048

Answer 10

MBR

Space is saved for mbr records in order to maintain information about the disks

Question 11

fdisk

option: l (lowercase L)

Answer 11

MBR

list known partition types

Question 12

fdisk

option: w

Answer 12

changes down in fdisk don’t exist until saved

Question 13

fdisk
option: l
option: t
enter code looked up by option l(lowercase L)

Answer 13

change partition id (essentially label)

Question 14

mkfs -t xfs /dev/xvda

Answer 14

after partitioning,
make filesystem next with mkfs -t FILESYSTEM(ex: xfs ext4)
-t to set file type (xfs,ext4 etc)

Question 15

df -h

Answer 15

see all mounted disk devices

Question 16

blkid

Answer 16

see available block storage devices attached to system

Question 17

/mnt

Answer 17

directory and its subdirectories are intended for use as the temporary mount points for mounting storage devices

Question 18

mkdir newdir inside /mnt

mount /dev/xvda /mnt/newdir

Answer 18

mount device

Question 19

fdisk

option: d

Answer 19

delete partiton, referred to by which partition number

Question 20

blkid

mount -U uuid(gathered from blkid) /mnt/newdir

Answer 20

mount by UUID

Question 21

two tools to make GPT partitons

Answer 21

command parted

command gdisk , easier to use for cert exam than parted

Question 22

gdisk

option: ?
option: n
option: w

afterwards for filesystem:
mkfs -t xfs /dev/xvda

Answer 22

used for GPT partitons
list options
new partition
save changes

afterwards make file system using mkfs -t
mount and use df -h to check

Question 23

umount /dev/xvda
gdisk /dev/xvda
option: d
option: w

Answer 23

to delete GPT partition