diff --git a/applecorn.po b/applecorn.po
index aa71f0e..c8b9fc1 100644
Binary files a/applecorn.po and b/applecorn.po differ
diff --git a/auxmem.hostfs.s b/auxmem.hostfs.s
index 82647e1..5f77c50 100644
--- a/auxmem.hostfs.s
+++ b/auxmem.hostfs.s
@@ -758,20 +758,24 @@ FREERET      >>>   ENTAUX
 * Disk size is two-byte 512-byte block count
 * Maximum disk size is $FFFF blocks = 1FFFF00 bytes = 33554176 bytes = 32M-512
 :NOERR       SEC
-             LDA   AUXBLK+2                  ; LSB of total blocks
-             SBC   AUXBLK+0                  ; LSB of blocks used
+             >>>   RDMAIN
+             LDA   BLKBUF+2                  ; LSB of total blocks
+             SBC   BLKBUF+0                  ; LSB of blocks used
              TAX                             ; X=b0-b7 of blocks free
-             LDA   AUXBLK+3                  ; MSB of total blocks
-             SBC   AUXBLK+1                  ; MSB of blocks used
+             LDA   BLKBUF+3                  ; MSB of total blocks
+             SBC   BLKBUF+1                  ; MSB of blocks used
              TAY                             ; Y=b8-b15 of blocks free
+             >>>   RDAUX
              LDA   #$00                      ; A=b16-b23 of blocks free
              JSR   :FREEDEC                  ; Print 'AAYYXX blocks aaayyyxxx bytes '
              LDX   #<:FREE
              LDY   #>:FREE
              JSR   OUTSTR                    ; Print 'free'<nl>
 
-             LDX   AUXBLK+0                  ; X=b0-b7 of blocks used
-             LDY   AUXBLK+1                  ; Y=b8-b15 of blocks used
+             >>>   RDMAIN
+             LDX   BLKBUF+0                  ; X=b0-b7 of blocks used
+             LDY   BLKBUF+1                  ; Y=b8-b15 of blocks used
+             >>>   RDAUX
              LDA   #$00                      ; A=b16-b23 of blocks used
              JSR   :FREEDEC                  ; Print 'AAYYXX blocks aaayyyxxx bytes '
              LDX   #<:USED
diff --git a/auxmem.misc.s b/auxmem.misc.s
index 1ca2788..799693b 100644
--- a/auxmem.misc.s
+++ b/auxmem.misc.s
@@ -535,8 +535,5 @@ MOSEND
             DW    IRQBRKHDLR       ; FFFE IRQVEC
 MOSVEND
 
-* Buffer for one 512 byte disk block in aux mem
-AUXBLK
-;           ASC   '**ENDOFCODE**'
-;           DS    $200-13
+*           ASC   '**ENDOFCODE**'
 
diff --git a/mainmem.svc.s b/mainmem.svc.s
index 213a3b7..fc6e7ed 100644
--- a/mainmem.svc.s
+++ b/mainmem.svc.s
@@ -1114,17 +1114,14 @@ DRVINFO       >>>   ENTMAIN
               LDA   GINFOPL+7
               CMP   #$0F
               BNE   :EXIT1             ; Not a drive, exit with 'Bad drive'
-
-              >>>   ALTZP              ; Alt ZP & Alt LC on
               LDA   GINFOPL+8          ; Blocks used LSB
-              STA   AUXBLK+0
+              STA   BLKBUF+0
               LDA   GINFOPL+9          ; Blocks used MSB
-              STA   AUXBLK+1
+              STA   BLKBUF+1
               LDA   GINFOPL+5          ; Total blocks LSB
-              STA   AUXBLK+2
+              STA   BLKBUF+2
               LDA   GINFOPL+6          ; Total blocks MSB
-              STA   AUXBLK+3
-              >>>   MAINZP             ; ALt ZP off, ROM back in
+              STA   BLKBUF+3
               LDA   #$00               ; $00=Ok
 
 :EXIT         CMP   #$46