Before you save a running LISP world to disk, select a LOD band to overwrite.
Execute @l[(print-disk-label)] to see a list of the existing disk partitions.
Then execute the LISP command @l(disk-save), providing the name of another LOD band.
When prompted, confirm that the specified band is the one you want to overwrite.

The following is an example session that illustrates @l(disk-save).@cindex[disk-save]
User input is displayed @ii(in italics).

@lisp
@ii[(disk-save 'lod2)]
Do you really want to clobber partition LOD2 on unit 0 ()? (Yes or No) @ii(yes)

@comment As of system 126.22:
@comment The system is now running:
@comment Experimental System 126.22
This is now:
 Experimental System 125.19
 ZWEI                125.2
 ZMail                73.0
 Local-File           75.2
 File-Server          24.1
 Unix-Interface       13.0
 Tape                 24.2
 Lambda-Diag          17.0
 Microcode          1762
 SDU                   3.14
Additional comment for herald: @ii(8/9/88)

@comment as of system 126.22:
@comment Edit the system version label (as shown); up to 16 characters allowed.
@comment Press RETURN when done.
@comment
@comment > 125.19, 8/9/88 @ii(@return)
@comment
Beginning shutdown initializations...
  :
Do you wish to load LAM symbols for Lambda? (Y or N) ... @ii(Y)
  :
Flipping level 2 now will result in better paging ... 
Flip level two? @ii(YES)
  :
  : @i(system reboots on new band)
  :
Reading at top level in Lisp Listener 1.
Reading in base 10 in package USER with standard Zetalisp readtable.

@end(lisp)

After LISP reboots on the new band, you will want to specify that
the new band be used when booting in the future.@cindex[set current band]@cindex[booting from selected band]

For example, if you disk-saved to the band LOD2, you would execute:
@lisp
(set-current-band 'lod2)
@end(lisp)















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@c end disk-save