Digitalcowboy 님이 쓰신 글

A) Create two partions (GUID) on external drive.
B) One no larger that 10 gigs. Call it "Mac OS X Install DVD"
C) Open Disk Utility and do a restore.
D) Drag 10.5 .dmg file onto the "source field"
E) Drag your newly created "Mac OS X Install DVD" partition into the destination field.
F) Click restore. Takes about twenty minutes.
G) After the restore is complete, open systems preference and select the "Mac OS X Install DVD" partition as your startup device.
H) Restart and install. It's quick and runs smoothly.