fixed btrfs bug

etc/calamares/modules/partition.conf

@@ -1,19 +1,20 @@
-efiSystemPartition:     "/boot/efi"
+# SPDX-FileCopyrightText: no
+# SPDX-License-Identifier: CC0-1.0
+#
+# partition handling.
+---
 
+efiSystemPartition:     "/efi"
+
+# set to 512M for best compatinbility for buggy old EFI firmware
 efiSystemPartitionSize:     512M
 
-efiSystemPartitionName:     EFI
-
 userSwapChoices:
     - none      # Create no swap, use no swap
     - small     # Up to 4GB
     - suspend   # At least main memory size
     - file      # To swap file instead of partition
 
-swapPartitionName:      swap
-
-luksGeneration: luks1
-
 drawNestedPartitions:   false
 
 alwaysShowPartitionLabels: true
@@ -24,5 +25,24 @@ initialSwapChoice: none
 
 defaultFileSystemType:  "ext4"
 
+# Selectable filesystem type, used when "erase" is done.
+#
+# When erasing the disk, the *defaultFileSystemType* is used (see
+# above), but it is also possible to give users a choice:
+# list suitable filesystems here. A drop-down is provided
+# to pick which is the filesystems will be used.
+#
+# The value *defaultFileSystemType* is added to this list (with a warning)
+# if not present; the default pick is the *defaultFileSystemType*.
+#
+# If not specified at all, uses *defaultFileSystemType* without a
+# warning (this matches traditional no-choice-available behavior best).
+# availableFileSystemTypes:  ["ext4","btrfs","xfs","f2fs"]
 
-availableFileSystemTypes:  ["ext4","btrfs","f2fs","jfs","reiser","xfs"]
+availableFileSystemTypes:  ["ext4","btrfs","f2fs","xfs"]
+
+partitionLayout:
+    - name: "ParchLinux"
+      filesystem: "unknown"
+      mountPoint: "/"
+      size: 100%