Bring a Synology DS115j (Marvell Armada 370, 256 MiB RAM) to the same Debian 13 (trixie) armhf daily-ready state as the live box on this LAN, or reinstall this one.
This is a self-contained UART + TFTP + HDD kit. A fresh clone contains the known-good boot artifacts and the complete Debian rootfs payload.
For a complete helper-free daily-ready install or reinstall, follow only docs/install-uart.md.
HDD boot from ide 0:2, SSH, DHCP + permanent .233, RGMII Ethernet, MCU LEDs/beep, temperature fan, SMART → bay amber only on failure, 10-minute HDD spin-down, zram, chrony, qnap_poweroff_ds115j PSU cut. Samba/backups/nftables are out of scope.
Live probe: docs/current-state.md. Cold-boot checklist: docs/cold-boot-verify.md.
Full notes: docs/access.md.
Verify after copy:
cd boot && shasum -a 256 -c SHA256SUMSKernel / ramdisk / modules/qnap-poweroff-ds115j.ko are one set. Vermagic: 6.12.107+deb13-armmp. Do not apt upgrade the kernel as a routine update.
Board DTS (good): dts/ds115j.dts SHA 89bc51c8…. The file dts/ds115j.dts.stale-with-alarm-gpios is labelled do not build.
docs/install-uart.md NEW DEVICE + REINSTALL (manual UART)
docs/landmines.md never ide 0:1, never casual saveenv, …
docs/recovery.md TFTP / sda2 rollback
docs/led-behaviour.md
docs/smart-amber-led.md
docs/disk-idle.md
docs/current-state.md
scripts/ MCU, fan, SMART amber, deploy-boot, bootstrap
dts/ good DTS/DTB
boot/ uImage + ramdisks
firmware/spi/ 8 MiB SPI dump (unbrick reference; do not rewrite SPI)
modules/ qnap_poweroff_ds115j.ko + source
rootfs/ split Debian rootfs archive (<95 MB per Git object)
config/ interfaces, smartd, systemd examples from the live NAS
HANDOFF/ historical bring-up notes
- Never ide 0:1(hangs). Boot files live onide 0:2(sda2).
- Never casual saveenv/sf write/bubt/fw_setenv(env sits inside stock zImage in SPI).
- Do not run scripts/extract-hdd.shon the live NAS — it wipes/dev/sdaand is a stale single-partition recipe.
- Do not attach disk-activityto the bay amber LED.
Full list: docs/landmines.md.
GitHub rejects individual files over 100 MB, so the 134,385,614-byte archive is committed as two ordinary Git files:
Reconstruct and verify the original archive:
scripts/reconstruct-rootfs.sh
# rootfs-trixie-armhf.tar.gz SHA-256:
# 9d869bf8f45f6f3908097aece847bb2d1bde4a6213801cb8460cdb83f9a30eb6No Git LFS client or helper host is required. To rebuild from Debian mirrors
instead, a Linux machine with mmdebstrap can run
sudo scripts/bootstrap-rootfs.sh.
First-boot dpkg --configure -a and apt-get need Internet on the NAS.
Give the laptop a LAN address such as 192.168.68.251/22, then run:
scripts/serve-tftp.shThe script stages and serves the three files in boot/. The former Raspberry
Pi helper is historical and optional; installation and recovery do not use it.