diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d5d9257df..86e5b26b5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -3,7 +3,7 @@ on: [push]
 env:
   KERNEL_VERSION: v0.19.1
   LINUX_VERSION: 6.5.9-ctsi-1-v0.19.1
-  ROOTFS_VERSION: v0.19.0
+  TOOLS_VERSION: v0.14.0-test1
   TEST_VERSION: v0.30.0
   CARTESI_TESTS_PATH: /usr/share/cartesi-machine/tests
   CARTESI_IMAGES_PATH: /usr/share/cartesi-machine/images
@@ -163,9 +163,9 @@ jobs:
       - name: Download [rootfs.ext2]
         uses: Legion2/download-release-action@v2.1.0
         with:
-          repository: ${{ github.repository_owner }}/image-rootfs
-          tag: ${{ env.ROOTFS_VERSION }}
-          file: rootfs-${{ env.ROOTFS_VERSION }}.ext2
+          repository: ${{ github.repository_owner }}/machine-emulator-tools
+          tag: ${{ env.TOOLS_VERSION }}
+          file: rootfs-tools-${{ env.TOOLS_VERSION }}.ext2
 
       - name: Download [kernel.bin]
         uses: Legion2/download-release-action@v2.1.0
@@ -179,7 +179,7 @@ jobs:
           mkdir -m 755 -p ${{ env.CARTESI_IMAGES_PATH }}
           mv linux-*.bin rootfs-*.ext2 ${{ env.CARTESI_IMAGES_PATH }}
           cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s linux-${{ env.LINUX_VERSION }}.bin linux.bin
-          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-${{ env.ROOTFS_VERSION }}.ext2 rootfs.ext2
+          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-tools-${{ env.TOOLS_VERSION }}.ext2 rootfs.ext2
 
       - name: Download test suite
         uses: Legion2/download-release-action@v2.1.0
@@ -310,9 +310,9 @@ jobs:
       - name: Download [rootfs.ext2]
         uses: Legion2/download-release-action@v2.1.0
         with:
-          repository: ${{ github.repository_owner }}/image-rootfs
-          tag: ${{ env.ROOTFS_VERSION }}
-          file: rootfs-${{ env.ROOTFS_VERSION }}.ext2
+          repository: ${{ github.repository_owner }}/machine-emulator-tools
+          tag: ${{ env.TOOLS_VERSION }}
+          file: rootfs-tools-${{ env.TOOLS_VERSION }}.ext2
 
       - name: Download [kernel.bin]
         uses: Legion2/download-release-action@v2.1.0
@@ -326,7 +326,7 @@ jobs:
           mkdir -m 755 -p ${{ env.CARTESI_IMAGES_PATH }}
           mv linux-*.bin rootfs-*.ext2 ${{ env.CARTESI_IMAGES_PATH }}/
           cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s linux-${{ env.LINUX_VERSION }}.bin linux.bin
-          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-${{ env.ROOTFS_VERSION }}.ext2 rootfs.ext2
+          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-tools-${{ env.TOOLS_VERSION }}.ext2 rootfs.ext2
 
       - name: Download test suite
         uses: Legion2/download-release-action@v2.1.0
@@ -502,9 +502,9 @@ jobs:
       - name: Download [rootfs.ext2]
         uses: Legion2/download-release-action@v2.1.0
         with:
-          repository: ${{ github.repository_owner }}/image-rootfs
-          tag: ${{ env.ROOTFS_VERSION }}
-          file: rootfs-${{ env.ROOTFS_VERSION }}.ext2
+          repository: ${{ github.repository_owner }}/machine-emulator-tools
+          tag: ${{ env.TOOLS_VERSION }}
+          file: rootfs-tools-${{ env.TOOLS_VERSION }}.ext2
 
       - name: Download [kernel.bin]
         uses: Legion2/download-release-action@v2.1.0
@@ -518,7 +518,7 @@ jobs:
           mkdir -m 755 -p ${{ env.CARTESI_IMAGES_PATH }}
           mv linux-*.bin rootfs-*.ext2 ${{ env.CARTESI_IMAGES_PATH }}/
           cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s linux-${{ env.LINUX_VERSION }}.bin linux.bin
-          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-${{ env.ROOTFS_VERSION }}.ext2 rootfs.ext2
+          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-tools-${{ env.TOOLS_VERSION }}.ext2 rootfs.ext2
 
       - name: Download test suite
         uses: Legion2/download-release-action@v2.1.0
@@ -600,9 +600,9 @@ jobs:
       - name: Download [rootfs.ext2]
         uses: Legion2/download-release-action@v2.1.0
         with:
-          repository: ${{ github.repository_owner }}/image-rootfs
-          tag: ${{ env.ROOTFS_VERSION }}
-          file: rootfs-${{ env.ROOTFS_VERSION }}.ext2
+          repository: ${{ github.repository_owner }}/machine-emulator-tools
+          tag: ${{ env.TOOLS_VERSION }}
+          file: rootfs-tools-${{ env.TOOLS_VERSION }}.ext2
 
       - name: Download [kernel.bin]
         uses: Legion2/download-release-action@v2.1.0
@@ -616,7 +616,7 @@ jobs:
           mkdir -m 755 -p ${{ env.CARTESI_IMAGES_PATH }}
           mv linux-*.bin rootfs-*.ext2 ${{ env.CARTESI_IMAGES_PATH }}/
           cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s linux-${{ env.LINUX_VERSION }}.bin linux.bin
-          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-${{ env.ROOTFS_VERSION }}.ext2 rootfs.ext2
+          cd ${{ env.CARTESI_IMAGES_PATH }} && ln -s rootfs-tools-${{ env.TOOLS_VERSION }}.ext2 rootfs.ext2
 
       - name: Download test suite
         uses: Legion2/download-release-action@v2.1.0
diff --git a/src/cartesi-machine.lua b/src/cartesi-machine.lua
index 694232e9c..3239cc2ae 100755
--- a/src/cartesi-machine.lua
+++ b/src/cartesi-machine.lua
@@ -360,6 +360,9 @@ where options are:
   --no-init-splash
     don't show cartesi machine splash on boot.
 
+  --no-default-init
+    don't use cartesi machine default init value (USER=dapp)
+
   --append-init=<string>
     append a command to machine's init script to be executed with root privilege.
     The command is executed on boot after mounting flash drives and before running the entrypoint.
@@ -438,9 +441,10 @@ local memory_range_replace = {}
 local ram_image_filename = images_path .. "linux.bin"
 local ram_length = 64 << 20
 local dtb_image_filename = nil
-local bootargs = "quiet earlycon=sbi console=hvc0 rootfstype=ext2 root=/dev/pmem0 rw init=/opt/cartesi/bin/init"
+local bootargs = "quiet earlycon=sbi console=hvc0 rootfstype=ext2 root=/dev/pmem0 rw init=/usr/sbin/cartesi-init"
 local init_splash = true
 local append_bootargs = ""
+local default_init = "USER=dapp\n"
 local append_init = ""
 local append_entrypoint = ""
 local rollup = {
@@ -1131,6 +1135,14 @@ local options = {
             return true
         end,
     },
+    {
+        "^%-%-no%-default%-init$",
+        function(all)
+            if not all then return false end
+            default_init = ""
+            return true
+        end,
+    },
     {
         "^%-%-append%-init%=(.*)$",
         function(o)
@@ -1535,6 +1547,7 @@ echo "
     end
 
     if #append_bootargs > 0 then config.dtb.bootargs = config.dtb.bootargs .. " " .. append_bootargs end
+    if #default_init > 0 then config.dtb.init = config.dtb.init .. default_init end
     if #append_init > 0 then config.dtb.init = config.dtb.init .. append_init end
     if #append_entrypoint > 0 then config.dtb.entrypoint = config.dtb.entrypoint .. append_entrypoint end
     if #exec_arguments > 0 then config.dtb.entrypoint = config.dtb.entrypoint .. table.concat(exec_arguments, " ") end