diff --git a/mkosi.images/base/mkosi.extra/usr/lib/repart.d/01-seed-data.conf b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/01-seed-data.conf
new file mode 100644
index 0000000..0815844
--- /dev/null
+++ b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/01-seed-data.conf
@@ -0,0 +1,3 @@
+[Partition]
+Type=linux-generic
+CopyBlocks=auto
diff --git a/mkosi.images/base/mkosi.extra/usr/lib/repart.d/20-usr-verity-sig.conf b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/20-usr-verity-sig.conf
index 2de8b70..b9e8697 100644
--- a/mkosi.images/base/mkosi.extra/usr/lib/repart.d/20-usr-verity-sig.conf
+++ b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/20-usr-verity-sig.conf
@@ -1,5 +1,5 @@
 [Partition]
 Type=usr-verity-sig
 Label=_empty
-SizeMinBytes=10M
-SizeMaxBytes=10M
+SizeMinBytes=16K
+SizeMaxBytes=16K
diff --git a/mkosi.images/base/mkosi.extra/usr/lib/repart.d/40-root.conf b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/40-root.conf
index 8f02611..532287f 100644
--- a/mkosi.images/base/mkosi.extra/usr/lib/repart.d/40-root.conf
+++ b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/40-root.conf
@@ -1,5 +1,6 @@
 [Partition]
 Type=root
 Format=ext4
-SizeMinBytes=1G
+SizeMinBytes=25G
+SizeMaxBytes=25G
 Encrypt=key-file+tpm2
diff --git a/mkosi.images/base/mkosi.extra/usr/lib/repart.d/50-local-data.conf b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/50-local-data.conf
new file mode 100644
index 0000000..4f8fcab
--- /dev/null
+++ b/mkosi.images/base/mkosi.extra/usr/lib/repart.d/50-local-data.conf
@@ -0,0 +1,4 @@
+[Partition]
+Type=linux-generic
+Label=local-data
+SizeMinBytes=10G
diff --git a/mkosi.repart/01-seed-data.conf b/mkosi.repart/01-seed-data.conf
new file mode 100644
index 0000000..25e1cf0
--- /dev/null
+++ b/mkosi.repart/01-seed-data.conf
@@ -0,0 +1,5 @@
+[Partition]
+Type=linux-generic
+Label=seed-data
+SizeMinBytes=100M
+SizeMaxBytes=100M
diff --git a/mkosi.repart/12-usr.conf b/mkosi.repart/12-usr.conf
index 7cb68b0..9a9ae19 100644
--- a/mkosi.repart/12-usr.conf
+++ b/mkosi.repart/12-usr.conf
@@ -5,6 +5,7 @@ Format=erofs
 CopyFiles=/usr:/
 Verity=data
 VerityMatchKey=usr
-Minimize=yes
 SplitName=%t.%U
 Compression=zstd
+SizeMinBytes=1G
+SizeMaxBytes=1G