[root@archiso /]# cat /boot/loader/entries/arch.conf
## This is just an example config file.
## Please edit the paths and kernel parameters according to your system.

title Arch Linux Encrypted
linux /vmlinuz-linux
initrd /initramfs-linux.img
options cryptdevice=UUID="67cc0547-7f9d-4cd7-8d4c-9deed82dce25" root=UUID="ac26acf0-74f8-47f4-b1b1-7778c653ba51" quiet rw

[root@archiso /]# blkid /dev/sda2
/dev/sda2: UUID="67cc0547-7f9d-4cd7-8d4c-9deed82dce25" TYPE="crypto_LUKS" PARTLABEL="Linux filesystem" PARTUUID="4e659346-2d54-4d6b-9d09-8fb03ff5769f"

[root@archiso /]# blkid /dev/mapper/cryptoroot
/dev/mapper/cryptoroot: UUID="ac26acf0-74f8-47f4-b1b1-7778c653ba51" TYPE="ext4"

[root@archiso /]# cat /etc/fstab
#
# /etc/fstab: static file system information
#
# <file system> <dir>   <type>  <options>       <dump>  <pass>
# /dev/mapper/cryptroot
UUID=ac26acf0-74f8-47f4-b1b1-7778c653ba51       /               ext4            rw,relatime,data=ordered        0 1

# /dev/sda1
UUID=7639-8DAA          /boot           vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro    0 2

[root@archiso /]#