Boot method: network
Image version: https://deb.debian.org/debian/dists/bullseye/main/installer-amd64/current/images/netboot/netboot.tar.gz 20210731
Date: <Date and time of the install>

Machine: Fujitsu Esprimo
Partitions: <df -Tl will do; the raw partition table is preferred>


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

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

Comments/Problems:

Didn't want to wipe my root partition, so simply moved away all system directories on the root file system.
debbootstrap then stumbles across the links in /, as it tries to create them unconditionally.
The wish is here, that debbootstrap recongises the links are there instead of failing.

Deleting the links and running the debbootstrap installer step again worked well.

As a remark, an EFI shim for grub is installed - is that a necessary step?

Thanks for a great distribution!