diff --git a/drivers/windows/tests/testthat/test-batch.R b/drivers/windows/tests/testthat/test-batch.R
index d90d1952..2df589be 100644
--- a/drivers/windows/tests/testthat/test-batch.R
+++ b/drivers/windows/tests/testthat/test-batch.R
@@ -24,9 +24,8 @@ test_that("batch data creates entries for share drives", {
   expect_equal(dat$hermod_root_drive, "X:")
   expect_equal(dat$hermod_root_path, "\\b\\c")
 
-  expected <- sprintf(
-    "hermod/lib/windows/%s;//fi--didef3.dide.ic.ac.uk/tmp/hermod-testing",
-    version_string(config$r_version, "."))
+  v <- version_string(config$r_version, ".")
+  expected <- sprintf("hermod/lib/windows/%s;I:/bootstrap/%s", v, v)
   expect_equal(dat$hermod_library, expected)
 })
 
diff --git a/drivers/windows/tests/testthat/test-bootstrap.R b/drivers/windows/tests/testthat/test-bootstrap.R
new file mode 100644
index 00000000..8587a596
--- /dev/null
+++ b/drivers/windows/tests/testthat/test-bootstrap.R
@@ -0,0 +1,15 @@
+test_that("can run bootstrap", {
+  mount <- withr::local_tempfile()
+  root <- example_root(mount, "b/c")
+  mock_hermod_provision <- mockery::mock()
+  mockery::stub(bootstrap_update, "hermod::hermod_provision",
+                mock_hermod_provision)
+
+  bootstrap_update(root)
+  mockery::expect_called(mock_hermod_provision, 1)
+  expect_true(file.exists(
+    file.path(root$path$root, "hermod", "bootstrap-windows.R")))
+  expect_equal(
+    mockery::mock_args(mock_hermod_provision)[[1]],
+    list("script", script = "hermod/bootstrap-windows.R", root = root))
+})
diff --git a/drivers/windows/tests/testthat/test-config.R b/drivers/windows/tests/testthat/test-config.R
index 8b1b1e99..c629b4b1 100644
--- a/drivers/windows/tests/testthat/test-config.R
+++ b/drivers/windows/tests/testthat/test-config.R
@@ -13,8 +13,7 @@ test_that("Can create configuration", {
   expect_equal(config$shares, list(shares))
   expect_equal(config$r_version, numeric_version("4.3.0"))
   expect_equal(config$path_lib, "hermod/lib/windows/4.3.0")
-  expect_equal(config$path_bootstrap,
-               "//fi--didef3.dide.ic.ac.uk/tmp/hermod-testing")
+  expect_equal(config$path_bootstrap, "I:/bootstrap/4.3.0")
 })
 
 
diff --git a/drivers/windows/tests/testthat/test-provision.R b/drivers/windows/tests/testthat/test-provision.R
index 234509a9..525485e2 100644
--- a/drivers/windows/tests/testthat/test-provision.R
+++ b/drivers/windows/tests/testthat/test-provision.R
@@ -13,18 +13,18 @@ test_that("can run provision script", {
   config <- root$config$windows
 
   msg <- capture_messages(
-    windows_provision("script", config, path_root, poll = 0))
+    windows_provision("script", config, path_root, NULL, poll = 0))
 
   mockery::expect_called(mock_get_client, 1)
   expect_equal(mockery::mock_args(mock_get_client)[[1]], list())
 
   mockery::expect_called(mock_client$submit, 1)
   args <- mockery::mock_args(mock_client$submit)[[1]]
-  expect_match(args[[2]], "^[[:xdigit:]]{32}$")
+  expect_match(args[[2]], "^conan:[[:xdigit:]]{32}$")
   id <- args[[2]]
   batch_path <- windows_path(file.path(
     "//host.dide.ic.ac.uk/share/path/b/c/hermod/provision",
-    id,
+    sub("^conan:", "", id),
     "provision.bat"))
   expect_equal(args, list(batch_path, id, "BuildQueue"))
 
@@ -46,6 +46,7 @@ test_that("error on provision script failure", {
   path_root <- root$path$root
   config <- root$config$windows
   expect_error(
-    suppressMessages(windows_provision("script", config, path_root, poll = 0)),
+    suppressMessages(
+      windows_provision("script", config, path_root, NULL, poll = 0)),
     "Installation failed")
 })
diff --git a/drivers/windows/tests/testthat/test-util.R b/drivers/windows/tests/testthat/test-util.R
index 5344e9ca..e61b4a36 100644
--- a/drivers/windows/tests/testthat/test-util.R
+++ b/drivers/windows/tests/testthat/test-util.R
@@ -115,3 +115,23 @@ test_that("readlines from file if exists returns null if file missing", {
   writeLines(c("a", "b"), path)
   expect_equal(readlines_if_exists(path), c("a", "b"))
 })
+
+
+test_that("writelines_if_not_exists updates files when different", {
+  path <- withr::local_tempfile()
+  writelines_if_different(c("a", "b"), path)
+  expect_equal(readLines(path), c("a", "b"))
+
+  writelines_if_different(c("a", "b", "c"), path)
+  expect_equal(readLines(path), c("a", "b", "c"))
+})
+
+
+test_that("writelines_if_not_exists does not update file when not different", {
+  path <- withr::local_tempfile()
+  writeLines(c("a", "b"), path)
+  mock_writelines <- mockery::mock()
+  mockery::stub(writelines_if_different, "writeLines", mock_writelines)
+  writelines_if_different(c("a", "b"), path)
+  mockery::expect_called(mock_writelines, 0)
+})