I just tried installing on a different USB stick with more or less the same results. When I rebooted using the original USB stick I opened this thread for I do see that the scratch directory has changed somewhat. It is now showing as: /vmfs/volumes/50de22a5-f4afafa0-f7b5-001517197ad8/.locker
~ # ls -la /vmfs/volumes/50de22a5-f4afafa0-f7b5-001517197ad8
drwxr-xr-t 1 root root 1260 Dec 28 23:08 .
drwxr-xr-x 1 root root 512 Jan 1 22:27 ..
-r-------- 1 root root 3211264 Dec 28 22:52 .fbb.sf
-r-------- 1 root root 267026432 Dec 28 22:52 .fdc.sf
drwxr-xr-x 1 root root 840 Dec 28 23:08 .locker
-r-------- 1 root root 1179648 Dec 28 22:52 .pb2.sf
-r-------- 1 root root 268435456 Dec 28 22:52 .pbc.sf
-r-------- 1 root root 262733824 Dec 28 22:52 .sbc.sf
-r-------- 1 root root 4194304 Dec 28 22:52 .vh.sf
~ # ls -al /vmfs/volumes
drwxr-xr-x 1 root root 512 Jan 1 22:21 .
drwxr-xr-x 1 root root 512 Jan 1 22:10 ..
lrwxr-xr-x 1 root root 35 Jan 1 22:21 1TB_WD_Black -> 50de2239-10698620-1956-001517197ad8
drwxr-xr-t 1 root root 1260 Jan 1 21:28 50de2239-10698620-1956-001517197ad8
drwxr-xr-t 1 root root 1260 Dec 28 23:08 50de22a5-f4afafa0-f7b5-001517197ad8
drwxr-xr-x 1 root root 8 Jan 1 1970 50df4c30-82b86e61-8522-001517197ad8
lrwxr-xr-x 1 root root 35 Jan 1 22:21 640GB_WD_Black_AALS-1 -> 50de22a5-f4afafa0-f7b5-001517197ad8
drwxr-xr-x 1 root root 8 Jan 1 1970 7cb258e0-f4980796-4918-4766c02ae6a8
drwxr-xr-x 1 root root 8 Jan 1 1970 8c231eec-aa4ac1c8-4b1d-14cf7ae5845e
~ # ls -al /
drwxr-xr-x 1 root root 512 Jan 1 22:21 .
drwxr-xr-x 1 root root 512 Jan 1 22:21 ..
-rw------- 1 root root 30 Jan 1 22:22 .ash_history
-r--r--r-- 1 root root 20 Aug 2 03:48 .mtoolsrc
lrwxrwxrwx 1 root root 49 Jan 1 22:10 altbootbank -> /vmfs/volumes/7cb258e0-f4980796-4918-4766c02ae6a8
drwxr-xr-x 1 root root 512 Jan 1 22:10 bin
lrwxrwxrwx 1 root root 49 Jan 1 22:10 bootbank -> /vmfs/volumes/8c231eec-aa4ac1c8-4b1d-14cf7ae5845e
-r--r--r-- 1 root root 300059 Aug 2 03:48 bootpart.gz
drwxr-xr-x 1 root root 512 Jan 1 22:22 dev
drwxr-xr-x 1 root root 512 Jan 1 22:20 etc
drwxr-xr-x 1 root root 512 Jan 1 22:10 lib
drwxr-xr-x 1 root root 512 Jan 1 22:10 lib64
-r-x------ 1 root root 12704 Jan 1 20:50 local.tgz
lrwxrwxrwx 1 root root 6 Jan 1 22:10 locker -> /store
drwxr-xr-x 1 root root 512 Jan 1 22:10 mbr
drwxr-xr-x 1 root root 512 Jan 1 22:10 opt
drwxr-xr-x 1 root root 131072 Jan 1 22:22 proc
lrwxrwxrwx 1 root root 22 Jan 1 22:10 productLocker -> /locker/packages/5.1.0
drwxr-xr-x 1 root root 512 Jan 1 22:10 sbin
lrwxrwxrwx 1 root root 57 Jan 1 22:10 scratch -> /vmfs/volumes/50de22a5-f4afafa0-f7b5-001517197ad8/.locker
lrwxrwxrwx 1 root root 49 Jan 1 22:10 store -> /vmfs/volumes/50df4c30-82b86e61-8522-001517197ad8
drwxr-xr-x 1 root root 512 Jan 1 22:10 tardisks
drwxr-xr-x 1 root root 512 Jan 1 22:10 tardisks.noauto
drwxrwxrwt 1 root root 512 Jan 1 22:20 tmp
drwxr-xr-x 1 root root 512 Jan 1 22:10 usr
drwxr-xr-x 1 root root 512 Jan 1 22:10 var
drwxr-xr-x 1 root root 512 Jan 1 22:10 vmfs
drwxr-xr-x 1 root root 512 Jan 1 22:10 vmimages
lrwxrwxrwx 1 root root 17 Aug 2 03:48 vmupgrade -> /locker/vmupgrade