scripts: automate the data-disk workflow (mkdisk / sendkeys / test-disk)

- scripts/mkdisk.sh: create the FAT32 disk with mkfs.fat -C (the flag
  that actually creates the file — plain mkfs.fat fails on a missing
  path), accept M/G/K sizes, seed seed/ files via mtools; --fresh
  re-formats, --no-seed skips seeding
- scripts/sendkeys.py: type lines into the guest via the QEMU monitor
  (US layout).  Punctuation must use QEMU's named keys (minus, slash,
  dot, ...) — bare '-', '.', '/' are not valid sendkey names, and '-'
  is the modifier separator, so they were silently dropped before
- scripts/test-disk.sh: full automated round trip — build, deploy,
  ensure image, boot headless QEMU, drive the shell (ls /disk, mkdir,
  echo >, cat, poweroff), then verify with fsck.fat (must be clean)
  and mtype (file content must have survived poweroff)
- Makefile: make disk / disk-fresh / inspect / test-disk; run, run-gui
  and debug now auto-create a missing DISK_IMG; fix the stale comment
  (mkfs.fat without -C)
- scripts/boot.sh: auto-create a missing DISK_IMG via mkdisk.sh
- seed/: motd.txt + lines.txt seeded onto fresh images
- Verified end to end: ./scripts/test-disk.sh --fresh passes

1 files changed, 33 insertions, 5 deletions

diff --git a/Makefile b/Makefile
index 7701d9d..01e265a 100644
--- a/Makefile
+++ b/Makefile
@@ -11,10 +11,10 @@ export BOOTLOADER=rsboot/rsboot.efi
 export OVMF=/usr/share/edk2/x64/OVMF.4m.fd
 export BOOT_EFI=$(ESP_DIR)/EFI/BOOT/BOOTX64.EFI
 # Attach a raw disk image as the SATA drive (disk.img -> ide.0, ESP -> ide.1).
-# Create one with: mkfs.fat -F 32 -n RSDOS disk.img && mcopy -i disk.img files ::
+# Create one with: make disk   (or: ./scripts/mkdisk.sh)
 export DISK_IMG ?= /tmp/disk.img
 
-.PHONY: all run run-gui clean image debug release fmt bootloader boot-image
+.PHONY: all run run-gui clean image debug release fmt bootloader boot-image disk disk-fresh inspect test-disk
 
 # ---- Build ---------------------------------------------------------------
 
@@ -43,7 +43,7 @@ $(INITRD): | $(ESP_DIR)
 
 # ---- QEMU runners --------------------------------------------------------
 
-run: all
+run: all disk
         qemu-system-x86_64 \
           -bios $(OVMF) \
           -drive file=$(DISK_IMG),format=raw,if=none,id=disk \
@@ -57,7 +57,7 @@ run: all
           -no-reboot \
           -display none
 
-run-gui: all
+run-gui: all disk
         qemu-system-x86_64 \
           -bios $(OVMF) \
           -drive file=$(DISK_IMG),format=raw,if=none,id=disk \
@@ -72,7 +72,7 @@ run-gui: all
           -vga std
 
 # GDB stub on :1234
-debug: all
+debug: all disk
         qemu-system-x86_64 \
           -bios $(OVMF) \
           -drive file=$(DISK_IMG),format=raw,if=none,id=disk \
@@ -92,6 +92,27 @@ debug: all
 run-image: all
         ./scripts/boot-image.sh rs-dos.img
 
+# ---- Data disk -----------------------------------------------------------
+
+# Create the FAT32 data disk if it doesn't exist.  Uses mkfs.fat -C (the
+# flag that actually creates the file) and seeds it from seed/.
+disk:
+        ./scripts/mkdisk.sh "$(DISK_IMG)"
+
+# Re-format the data disk from scratch (wipes it, then re-seeds).
+disk-fresh:
+        ./scripts/mkdisk.sh --fresh "$(DISK_IMG)"
+
+# List the data disk contents with mtools (requires mtools).
+inspect:
+        @command -v mdir >/dev/null 2>&1 || (echo "inspect needs mtools: sudo apt install mtools"; exit 1)
+        @mdir -i "$(DISK_IMG)"
+
+# Full automated round trip: build -> boot -> shell commands -> poweroff
+# -> fsck + mtools verification.
+test-disk:
+        ./scripts/test-disk.sh
+
 # ---- Full boot chain -----------------------------------------------------
 
 # Build bootloader only (rsboot submodule)
@@ -126,11 +147,18 @@ help:
         @echo "  make run            QEMU serial console (direct boot, no bootloader)"
         @echo "  make run-gui        QEMU with graphical window (GOP/PS2)"
         @echo "  make debug          QEMU + GDB stub on :1234"
+        @echo "  make disk           create the data disk if missing (default /tmp/disk.img)"
+        @echo "  make disk-fresh     re-format the data disk (wipes it)"
+        @echo "  make inspect        list data disk contents (mtools)"
+        @echo "  make test-disk      automated disk round trip (build->boot->fsck)"
         @echo "  make clean          remove build artifacts"
         @echo "  make fmt            format Rust source"
         @echo ""
         @echo "Scripts:"
         @echo "  ./scripts/boot.sh              quick direct boot (dev loop)"
+        @echo "  ./scripts/mkdisk.sh            create/re-format the data disk"
+        @echo "  ./scripts/test-disk.sh         automated disk round trip"
+        @echo "  ./scripts/sendkeys.py          type into QEMU via the monitor"
         @echo "  ./scripts/boot-image.sh        boot full chain (builds if needed)"
         @echo "  ./scripts/build-image.sh       build full chain disk image"
         @echo "  ./scripts/build-bootloader.sh  build rsboot from source"