diff --git a/hpcgap/lib/package.gi b/hpcgap/lib/package.gi
index de55f0e6f19..321c73576fb 100644
--- a/hpcgap/lib/package.gi
+++ b/hpcgap/lib/package.gi
@@ -1819,25 +1819,6 @@ BindGlobal( "BANNER", false );
 
     GAPInfo.delayedImplementationParts:= [];
 
-    # Ensure GAP loads PrimGrp, SmallGrp and TransGrp packages
-    # To be migrated to lib/system.g after the replacement of
-    # prim, small and trans directories by these packages
-    if TestPackageAvailability("primgrp") <> fail then
-      GAPInfo.Dependencies.NeededOtherPackages :=
-        `Concatenation( ShallowCopy(GAPInfo.Dependencies.NeededOtherPackages),
-           [ [ "primgrp", ">= 3.1.0" ] ]);
-    fi;
-    if TestPackageAvailability("smallgrp") <> fail then
-      GAPInfo.Dependencies.NeededOtherPackages :=
-        `Concatenation( ShallowCopy(GAPInfo.Dependencies.NeededOtherPackages),
-           [ [ "smallgrp", ">= 1.0" ] ]);
-    fi;
-    if TestPackageAvailability("transgrp") <> fail then
-      GAPInfo.Dependencies.NeededOtherPackages :=
-        `Concatenation( ShallowCopy(GAPInfo.Dependencies.NeededOtherPackages),
-          [ [ "transgrp", ">= 1.0" ] ]);
-    fi;
-
     # Load the needed other packages (suppressing banners)
     # that are not yet loaded.
     if ForAny( GAPInfo.Dependencies.NeededOtherPackages,
diff --git a/hpcgap/lib/system.g b/hpcgap/lib/system.g
index 347ce8d00a8..010ae3e1646 100644
--- a/hpcgap/lib/system.g
+++ b/hpcgap/lib/system.g
@@ -30,8 +30,13 @@ BIND_GLOBAL( "GAPInfo", AtomicRecord(rec(
     Dependencies := rec(
       NeededOtherPackages := `[
         [ "gapdoc", ">= 1.2" ],
+        [ "primgrp", ">= 3.1.0" ],
+        [ "smallgrp", ">= 1.0" ],
+        [ "transgrp", ">= 1.0" ],
       ],
     ),
+# There is no SuggestedOtherPackages here because the default value of
+# the user preference PackagesToLoad does the job      
 
     HasReadGAPRC:= false,
 
diff --git a/lib/package.gi b/lib/package.gi
index 1df3a747fcf..9db68883870 100644
--- a/lib/package.gi
+++ b/lib/package.gi
@@ -1814,19 +1814,6 @@ BindGlobal( "BANNER", false );
 
     GAPInfo.delayedImplementationParts:= [];
 
-    # Ensure GAP loads PrimGrp, SmallGrp and TransGrp packages
-    # To be migrated to lib/system.g after the replacement of
-    # prim, small and trans directories by these packages
-    if TestPackageAvailability("primgrp") <> fail then
-      Add( GAPInfo.Dependencies.NeededOtherPackages, [ "primgrp", ">= 3.1.0" ] );
-    fi;
-    if TestPackageAvailability("smallgrp") <> fail then
-      Add( GAPInfo.Dependencies.NeededOtherPackages, [ "smallgrp", ">= 1.0" ] );
-    fi;
-    if TestPackageAvailability("transgrp") <> fail then
-      Add( GAPInfo.Dependencies.NeededOtherPackages, [ "transgrp", ">= 1.0" ] );
-    fi;
-
     # Load the needed other packages (suppressing banners)
     # that are not yet loaded.
     if ForAny( GAPInfo.Dependencies.NeededOtherPackages,
diff --git a/lib/read.g b/lib/read.g
index 007145b3212..bd2b203ecae 100644
--- a/lib/read.g
+++ b/lib/read.g
@@ -10,70 +10,6 @@ ReadOrComplete( "lib/read7.g" ); # character theory stuff
 ReadOrComplete( "lib/read8.g" ); # overloaded operations, compiler interface
 ReadLib( "colorprompt.g"  );
 
-
-#############################################################################
-##
-##  Load data libraries
-##  The data libraries which may be absent cannot be completed, therefore
-##  they must be read in here!
-
-#############################################################################
-##
-#X  Read library of groups of small order
-#X  Read identification routine
-##
-if TestPackageAvailability("smallgrp")=fail then
-  ReadSmall( "readsml.g","small groups" );
-fi;
-
-#############################################################################
-##
-#X  Checking transitive groups library
-##
-## Assign TransitiveGroupsAvailable to a dummy function to make it
-## callable, even if the library is unavailable.
-if TestPackageAvailability("transgrp")=fail then
-  InstallGlobalFunction(TransitiveGroupsAvailable,deg->false);
-fi;
-
-# Only load component if not available as package
-# (to be removed together with the `trans` directory)
-if TestPackageAvailability("transgrp")=fail then
-  TRANS_AVAILABLE:=ReadTrans( "trans.gd","transitive groups" );
-  TRANS_AVAILABLE:= TRANS_AVAILABLE and ReadTrans( "trans.grp",
-					  "transitive groups" );
-  TRANS_AVAILABLE:= TRANS_AVAILABLE and ReadTrans( "trans.gi",
-					  "transitive groups" );
-fi;
-
-#############################################################################
-##
-#X  Checking primitive groups library
-##
-## Assign PrimitiveGroupsAvailable to a dummy function to make it
-## callable, even if the library is unavailable.
-if TestPackageAvailability("primgrp")=fail then
-  InstallGlobalFunction(PrimitiveGroupsAvailable,deg->false);
-fi;
-
-# Only load component if not available as package
-# (to be removed together with the `prim` directory)
-if TestPackageAvailability("primgrp")=fail then
-  PRIM_AVAILABLE:=ReadPrim( "primitiv.gd","primitive groups" );
-  PRIM_AVAILABLE:=PRIM_AVAILABLE and ReadPrim( "irredsol.gd","irreducible solvable groups" );
-  PRIM_AVAILABLE:=PRIM_AVAILABLE and ReadPrim( "primitiv.grp",
-                                       "primitive groups" );
-  PRIM_AVAILABLE:=PRIM_AVAILABLE and ReadPrim( "primitiv.gi",
-                                       "primitive groups" );
-
-  PRIM_AVAILABLE:=PRIM_AVAILABLE and ReadPrim( "irredsol.grp",
-                                       "irreducible solvable groups" );
-  PRIM_AVAILABLE:=PRIM_AVAILABLE and ReadPrim( "irredsol.gi",
-                                       "irreducible solvable groups" );
-  PRIM_AVAILABLE:=PRIM_AVAILABLE and ReadPrim( "cohorts.grp",
-                                       "irreducible solvable groups" );
-fi;
-
 #############################################################################
 ##
 #E
diff --git a/lib/system.g b/lib/system.g
index a594fd1100f..120a3397661 100644
--- a/lib/system.g
+++ b/lib/system.g
@@ -30,11 +30,13 @@ BIND_GLOBAL( "GAPInfo", rec(
     Dependencies := rec(
       NeededOtherPackages := [
         [ "gapdoc", ">= 1.2" ],
+        [ "primgrp", ">= 3.1.0" ],
+        [ "smallgrp", ">= 1.0" ],
+        [ "transgrp", ">= 1.0" ],
       ],
            ),
- # There is no SuggestedOtherPackages here because the default value of 
- # the user preference PackagesToLoad does the job                           
-                            
+# There is no SuggestedOtherPackages here because the default value of
+# the user preference PackagesToLoad does the job      
 
     HasReadGAPRC:= false,