diff --git a/.claude/memory/schunix-iso-boot.md b/.claude/memory/schunix-iso-boot.md
index af0c38f..a00f57d 100644
--- a/.claude/memory/schunix-iso-boot.md
+++ b/.claude/memory/schunix-iso-boot.md
@@ -5,7 +5,7 @@ metadata:
   node_type: memory
   type: project
   originSessionId: a665e14b-86bd-4b41-a228-51377f3e9225
-  modified: 2026-08-09T20:03:23.603Z
+  modified: 2026-08-09T20:19:56.990Z
 ---
 
 **`make iso` produces a bootable `schunix.iso`** (added 2026-08-04). Always a
@@ -83,7 +83,14 @@ list was not an option, because the ramdisk is linked into the kernel binary and
 what goes into it is a licensing question ([[schunix-ramdisk-root-sizing]]).
 `RAMDISK_NINODES` is gone: SchFS has no preallocated inode table.
 
-**Not a live CD.** The disc boots from the ramdisk embedded in the kernel, not
-from itself. Mounting it would need an ATAPI block driver (`kernel/dev/ide.c`
-speaks only ATA — 0x20/0x30/0xC4, no PACKET) plus an ISO 9660 filesystem behind
-`struct fs_ops`. Only the *bootloader* does ATAPI, in real mode.
+**Not a live CD, and deliberately staying that way** (decided 2026-08-09).
+The disc boots from the ramdisk embedded in the kernel, not from itself.
+Mounting it as root would need an ATAPI block driver (`kernel/dev/ide.c` speaks
+only ATA — 0x20/0x30/0xC4, no PACKET) plus an ISO 9660 filesystem behind
+`struct fs_ops`; only the *bootloader* does ATAPI, and only in real mode.
+
+Nexoniarz called that work off: the ISO already boots a complete system from
+the ramdisk, so it *is* the live environment, and an installer makes a
+mountable disc redundant. The installer copies from the running root, so it
+never reads the disc as a filesystem at all. See
+[[schunix-roadmap-and-projects]].
diff --git a/.claude/memory/schunix-roadmap-and-projects.md b/.claude/memory/schunix-roadmap-and-projects.md
index c9c0b1e..24a633b 100644
--- a/.claude/memory/schunix-roadmap-and-projects.md
+++ b/.claude/memory/schunix-roadmap-and-projects.md
@@ -5,7 +5,7 @@ metadata:
   node_type: memory
   type: project
   originSessionId: a665e14b-86bd-4b41-a228-51377f3e9225
-  modified: 2026-08-04T23:05:57.185Z
+  modified: 2026-08-09T20:20:11.342Z
 ---
 
 **Set out 2026-08-04.** Recorded in `docs/roadmap.md`; the naming and the
@@ -48,6 +48,36 @@ size, and dedups across images. Most of it exists — `tools/mkschfs.c` and
 `tools/mkfs.c` already do content dedup with an `(st_dev, st_ino)` fast path.
 `mksip` should share that code.
 
+## The installer, scoped 2026-08-09
+
+**A live CD is off the list.** The ISO boots a complete system from the
+ramdisk, so it already is the live environment; an installer makes a mountable
+disc redundant. That drops the ATAPI driver and ISO 9660 filesystem entirely
+— see [[schunix-iso-boot]].
+
+Nexoniarz chose the ambitious shape on both open questions:
+
+- **Both firmwares from the start**: GPT with a FAT ESP *and* a SchFS
+  partition, bootable on BIOS and UEFI. Needs a FAT writer and GPT code inside
+  the OS before anything can be installed at all.
+- **`.sip` first**, rather than copying the running root. The installer applies
+  a package; `mksip` comes before anything installs.
+
+Dependency chain, each stage separately verifiable:
+
+1. **Raw block device** — *done*, commit 66152ad. `/dev/hda`, `/dev/hdb`,
+   major 8, minor = IDE device number. Verified against the host as an
+   independent oracle in both directions. **Limit: `devsw` passes the offset as
+   a 32-bit `uint`, so a raw disk stops at 4 GB** — widen before installing to
+   real hardware.
+2. **`.sip` format + `mksip`**, sharing the dedup path in `mkschfs.c`. Test it
+   the way the SchFS round-trip is tested: build, apply, `diff -r` against the
+   source tree ([[schfs-phase2-mount]]).
+3. **In-OS tooling**: GPT writer, FAT ESP writer, native SchFS formatter.
+4. **Bootable target**: bootblock + stage2 for BIOS, ESP + BOOTX64.EFI + kernel
+   for UEFI.
+5. **`schinst`** in `projects/`, driving all of it.
+
 **Confirmed order (2026-08-05):** finish USB, then sockets + raw input, then
 virtio-gpu.