Apple Mac Mini Mid2011 User Guide

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Chapter 4      Problem, Meet Solution
	
ÂRestart	your	computer	while	holding	down	the	Command	key	(x)	and	R	key, 	until	
the	computer	restarts. 	When	the	Mac	OS	X	Utilities	application	appears, 	select	an	
option	to	repair	your	disk, 	restore	your	software,	or	reinstall	Mac	OS	X	and	Apple	
applications	from	the	Mac	OS	X	Utilities	pane. 	For	more	information,	see	“Repairing, 	
Restoring, 	or	Reinstalling	Mac	OS	X	Software” 	on	page	52.
	
ÂPress	the	power	button	(®)	and	immediately	hold	down	the	Command...

52Chapter 4      Problem, Meet Solution
Repairing, Restoring, or Reinstalling Mac OS X Software
If	you	have	a	problem	with	your	Mac	software	or	hardware, 	Mac	OS	X	provides	repair	
and	restore	utilities	that	may	eliminate	problems	and	can	even	restore	your	software	
to	its	original	factory	settings. 	You	can	access	these	utilities	from	the	Mac	OS	X	Utilities	
application, 	even	if	your	computer	isn’t	starting	up	correctly.
Use	the	Mac	OS	X	Utilities	application	to:
	
ÂRestore	your	software	and	data	from...

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Chapter 4      Problem, Meet Solution
	
ÂRestore	your	computer	to	its	factory	settings	by	erasing	its	disk	and	reinstalling	
Mac	OS	X	Lion	and	your	Apple	applications.
If	your	computer	detects	a	problem, 	it	opens	the	Mac	OS	X	Utilities	application	
automatically. 	You	can	also	open	it	manually	by	restarting	your	computer.
To open the Mac OS X Utilities application:
	
mRestart	your	computer	while	holding	down	the	Command	key	(x)	and	R	key.
Important:  If	the	Mac	OS	X	Utilities	application	doesn’t...

54Chapter 4      Problem, Meet Solution
Repairing a Disk with Disk Utility
If	you	have	a	problem	with	your	computer, 	or	if	you	start	your	computer	and	see	the	
Mac	OS	X	Utilities	pane, 	you	may	need	to	repair	your	computer’s	disk.
1  Select	Disk	Utility	in	the	Mac	OS	X	Utilities	pane	and	click	Continue.
2  Select	the	disk	or	partition	in	the	list	on	the	left, 	and	then	click	the	First	Aid	tab.
3  Click	Repair	Disk.
If	Disk	Utility	can’t	repair	the	disk, 	back	up	as	much	of	your	information	as	possible,...

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Chapter 4      Problem, Meet Solution
Reinstalling Mac OS X and Apple Applications
Under	some	circumstances, 	you	may	need	to	reinstall	Mac	OS	X	and	Apple	applications. 	
You	can	reinstall	while	keeping	your	files	and	user	settings	intact.
Important:  The	Mac	OS	X	Utilities	application	also	reinstalls	and	restores	Mac	OS	X	Lion	
Server	software, 	if	you	have	it	installed	on	your	Mac	mini.
1  Make	sure	the	Mac	mini	is	connected	to	the	Internet	via	an	Ethernet	or	 Wi-Fi	network.	
( To	connect	to	a...

56Chapter 4      Problem, Meet Solution
Restoring Your Computer to Its Factory Settings
When	you	restore	your	computer	to	its	factory	settings, 	everything	on	your	computer	
(your	user	accounts, 	network	settings,	and	all	of	your	files	and	folders)	is	deleted. 	Before	
you	restore, 	back	up	any	files	you	want	to	keep	by	copying	them	to	another	disk. 	
Write	down	your	network	settings	from	Network	preferences	to	make	it	easier	to	get	
connected	again	after	reinstalling	Mac	OS	X.
1  Make	sure	you’re...

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Chapter 4      Problem, Meet Solution
Checking for a Hardware Problem
If	you	suspect	a	hardware	problem, 	use	the	Apple	Hardware	Test	application	to	help	
determine	if	there’s	a	problem	with	one	of	the	Mac	mini	components. 	
To use Apple Hardware Test:
1  Disconnect	all	external	devices	from	your	Mac	mini, 	except	the	keyboard,	mouse,	and	
display. 	If	you	have	an	Ethernet	cable	connected, 	disconnect	it.
2  Restart	your	Mac	mini	while	holding	down	the	D	key.
3  When	the	Apple	Hardware	 Test	chooser...

58Chapter 4      Problem, Meet Solution
Problems with Your Internet Connection
Your	Mac	mini	has	the	Network	Setup	Assistant	application	to	help	you	set	up	an	
Internet	connection. 	Open	System	Preferences	and	click	Network. 	Click	the	“Assist	me” 	
button	to	open	Network	Setup	Assistant.
If	you	have	trouble	with	your	Internet	connection, 	try	using	Network	Diagnostics.
To use Network Diagnostics:
1  Choose	Apple	()	>	System	Preferences.
2  Click	Network	and	then	click	 “Assist	me.”
3  Click	Diagnostics...

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Chapter 4      Problem, Meet Solution
Important:  Instructions	that	refer	to	modems	do	not	apply	to	LAN	users. 	LAN	users	
might	have	hubs, 	switches,	routers,	or	connection	pods	that	cable	and	DSL	modem	
users	don’t	have. 	LAN	users	should	contact	their	network	administrator, 	rather	than		
an	ISP.
PPPoE Connections 
If	you’re	unable	to	connect	to	your	ISP	using	PPPoE	(Point	to	Point	Protocol	over	
Ethernet), 	make	sure	you	have	entered	the	correct	information	in	Network	preferences.
To enter PPPoE...

60Chapter 4      Problem, Meet Solution
Network Connections
Make	sure	the	Ethernet	cable	is	plugged	into	your	Mac	mini	and	into	the	network. 	
Check	the	cables	and	power	supplies	to	your	Ethernet	hubs	and	routers.
If	you	have	two	or	more	computers	sharing	an	Internet	connection, 	make	sure	your	
network	is	set	up	properly. 	You	need	to	know	whether	your	ISP	provides	only	one	IP	
address, 	or	a	different	IP	address	for	each	computer.
If	your	ISP	provides	only	one	IP	address, 	then	you	must	have	a	router...