diff --git a/Makefile b/Makefile
index 7fcd0dc..42682a5 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,10 @@ ENCLAVE_NAME?=localnet
 PARAMS_FILE?=params.yaml
 SSV_NODE_COUNT?=4
 SSV_COMMIT?=stage
+# Minimum free disk (GiB) in the Docker VM before a run. Geth self-terminates below its
+# ~1.62GiB low-disk safety threshold, which freezes the chain mid-run (EL gone → CL gets no
+# payloads). Guarded with headroom by check-deps; override for tiny/large runs.
+MIN_DISK_GIB?=10
 
 default: run
 
@@ -15,6 +19,17 @@ check-deps:
 	@command -v docker >/dev/null 2>&1 || { echo "Error: docker not found. Install: https://docs.docker.com/get-docker/"; exit 1; }
 	@command -v kurtosis >/dev/null 2>&1 || { echo "Error: kurtosis not found. Install: https://docs.kurtosis.com/install"; exit 1; }
 	@docker info >/dev/null 2>&1 || { echo "Error: Docker daemon not running. Start Docker/OrbStack first."; exit 1; }
+# Approximate free space in the Docker storage backend: the alpine overlay and Kurtosis volumes
+# (where geth's chaindata lives) share the VM data-root on Docker Desktop/OrbStack, so this is a
+# good proxy rather than an exact volume measurement. Fails open — if `docker run` can't execute
+# (offline, registry/proxy blocked) avail is empty and the check is skipped, not failed.
+	@avail=$$(docker run --rm alpine df -P / 2>/dev/null | awk 'NR==2{printf "%d", $$4/1024/1024}'); \
+	if [ -n "$$avail" ] && [ "$$avail" -lt "$(MIN_DISK_GIB)" ]; then \
+		echo "Error: Docker storage backend has only ~$${avail}GiB free (need >= $(MIN_DISK_GIB)GiB)."; \
+		echo "  Geth self-terminates below ~1.62GiB free (low-disk safety), freezing the chain mid-run."; \
+		echo "  Free space:  docker builder prune -af && docker system prune -f   (or raise Docker Desktop's disk image size)."; \
+		exit 1; \
+	fi
 
 .PHONY: run
 run: check-deps ensure-keys
@@ -185,6 +200,7 @@ help:
 	@echo "Network scenarios:"
 	@echo "  make run                             Default: Fulu (all forks active)"
 	@echo "  make run-boole                       Boole fork at epoch 3, Fulu at epoch 5"
+	@echo "  make run-gloas                       Gloas/ePBS fork at epoch 2 (devnet-5 images)"
 	@echo "  make run PARAMS_FILE=custom.yaml     Custom params"
 	@echo ""
 	@echo "Configuration:"
@@ -199,10 +215,15 @@ help:
 # ── Network scenarios ────────────────────────────────────────────────
 
 .PHONY: run-boole
-run-boole: ensure-keys
+run-boole: check-deps ensure-keys
 	@echo "──── Starting SSV testnet (Boole fork at epoch 3) ────"
 	kurtosis run --enclave $(ENCLAVE_NAME) --args-file params-boole.yaml .
 
+.PHONY: run-gloas
+run-gloas: check-deps ensure-keys
+	@echo "──── Starting SSV testnet (Gloas/ePBS fork at epoch 2) ────"
+	kurtosis run --enclave $(ENCLAVE_NAME) --args-file params-gloas.yaml .
+
 # ── Tests ────────────────────────────────────────────────────────────
 
 .PHONY: test-faulty-el
diff --git a/README.md b/README.md
index 182947b..4e5fc82 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ make help
 |---------|-------------|
 | `make run` | Start testnet (default: Fulu, all forks active) |
 | `make run-boole` | Start with Boole fork at epoch 3, Fulu at epoch 5 |
+| `make run-gloas` | Start with Gloas/ePBS (EIP-7732) fork at epoch 2 (devnet-5 images) |
 | `make reset` | Clean + restart from genesis |
 | `make show` | Show running services and ports |
 | `make logs` | Tail ssv-node-0 logs (`SERVICE=ssv-node-1` for others) |
@@ -99,6 +100,7 @@ use_static_keys: true   # false = regenerate keys at runtime (~40s slower)
 Pre-built configs:
 - `params.yaml` — Fulu at genesis (default)
 - `params-boole.yaml` — Electra→Boole→Fulu fork transitions
+- `params-gloas.yaml` — Fulu→Gloas (ePBS/EIP-7732) transition; needs `SSV_COMMIT=epbs-gloas make prepare` and ethpandaops glamsterdam-devnet-5 client images (monitor/E2M disabled — can't parse Gloas)
 
 ```bash
 make run PARAMS_FILE=params-boole.yaml
diff --git a/params-gloas.yaml b/params-gloas.yaml
new file mode 100644
index 0000000..83884aa
--- /dev/null
+++ b/params-gloas.yaml
@@ -0,0 +1,75 @@
+# Gloas / ePBS (EIP-7732) fork-transition test: genesis on Fulu, forks into Gloas at epoch 2.
+# Usage: SSV_COMMIT=epbs-gloas make prepare && make run-gloas
+#        (or: make run PARAMS_FILE=params-gloas.yaml)
+#
+# Clients: ethpandaops glamsterdam-devnet-5 builds — the stock geth/lighthouse releases used by
+# params.yaml do NOT implement EIP-7732. The genesis generator is pinned to a Gloas-aware build
+# (the ethereum-package@6.1.0 default, 5.3.5, predates Gloas).
+#
+# Heads-up — the devnet image tags below (glamsterdam-devnet-5 for geth/lighthouse, dora master-*)
+# are MOVING targets that ethpandaops re-pushes as the devnet advances; they're left unpinned on
+# purpose to track devnet-5. If a future run breaks genesis or the transition, a re-pushed image is
+# a prime suspect — refresh the tags, or pin a @sha256: digest once devnet-5 stabilizes.
+#
+# Gloas is purely beacon-driven on the SSV side: the node reads GLOAS_FORK_EPOCH from the beacon
+# node's /config/spec at runtime, so no SSV-side fork knob is needed. Boole (the SSV protocol fork
+# ePBS builds on) must be active, though — hence boole_epoch: 0 (default is disabled).
+#
+# Monitor (E2M) is disabled: the ethereum2-monitor image cannot parse Fulu/Gloas beacon blocks
+# (it decodes via go-eth2-client, which has no Gloas types). Observe ePBS via the SSV node logs
+# and dora. Re-enable once E2M gains Gloas support.
+
+network:
+  participants:
+  - el_type: geth
+    el_image: ethpandaops/geth:glamsterdam-devnet-5
+    cl_type: lighthouse
+    cl_image: ethpandaops/lighthouse:glamsterdam-devnet-5
+    validator_count: 32
+    count: 2
+    supernode: true
+
+  additional_services:
+    - dora
+
+  # dora's default image can't render Gloas blocks; pin the devnet-5 build.
+  dora_params:
+    image: ethpandaops/dora:master-0e63023
+
+  # 6.1.0's default generator (5.3.5) predates Gloas; pin the devnet-5 build.
+  ethereum_genesis_generator_params:
+    image: ethpandaops/ethereum-genesis-generator:6.0.8
+
+  network_params:
+    network_id: "3151908"
+    deneb_fork_epoch: 0
+    electra_fork_epoch: 0
+    fulu_fork_epoch: 0        # Fulu must precede Gloas — activate at genesis
+    gloas_fork_epoch: 2       # ePBS fork; small so the transition lands a few minutes in (tune freely)
+    perfect_peerdas_enabled: false
+    preregistered_validator_count: 74
+
+  port_publisher:
+    cl:
+      enabled: true
+
+use_static_keys: true
+
+monitor:
+  enabled: false
+
+boole_epoch: 0   # SSV Boole fork active from genesis (ePBS builds on Boole); default is disabled
+
+nodes:
+  ssv:
+    count: 4
+  anchor:
+    count: 0
+
+images:
+  ssv: "node/ssv"
+  anchor: "sigp/anchor:v1.2.0"
+  monitor: "monitor"
+  redis: "redis:7.4.2"
+  postgres: "postgres:15"
+  deployer: "localssv/ssv-network"