(Please provide enough information to help the Debian
maintainers evaluate the report efficiently - e.g., by filling
in the sections below.)

Boot method: USB

Machine: Deciso DEC630 (preinstalled with BSD/OPNSense)

Partioned manually during setup:
# lsblk

NAME                            MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
sda                               8:0    0 119.2G  0 disk
├─sda1                            8:1    0   243M  0 part  /boot
└─sda2                            8:2    0   119G  0 part
  └─sdb2_crypt                  254:0    0   119G  0 crypt
    └─vg--malgranda--disko-root 254:1    0   119G  0 lvm   /
sdb                               8:16   0 953.9G  0 disk
├─sdb1                            8:17   0   487M  0 part
└─sdb2                            8:18   0 953.4G  0 part
sdc                               8:32   1   7.3G  0 disk
└─sdc1                            8:33   1   3.9G  0 part



Base System Installation Checklist:
[O] = OK, [E] = Error (please elaborate below), [ ] = didn't try it

Initial boot:           [E]
Detect network card:    [O]
Configure network:      [O]
Detect media:           [O]
Load installer modules: [O]
Clock/timezone setup:   [O]
User/password setup:    [O]
Detect hard drives:     [O]
Partition hard drives:  [O]
Install base system:    [O]
Install tasks:          [O]
Install boot loader:    [O]
Overall install:        [O]

Comments/Problems:

I had to configure syslinux using

serial 0 115200
console 0

to get a boot prompt and append

console=ttyS0,115200n8

to the kernel args to have serial output (the system does not have graphical
output or serial redirection via bios of graphic output). I'd would be nice if
the installer would have serial output by default. During installation GRUB was
configured to boot a system with a serial console, however.