New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
OS X - Operating System General OS operation information and support

Mac not reading USB during boot (while holding alt/option)


Post Reply New Thread Subscribe

 
Thread Tools
Penguinator

 
Member Since: Sep 02, 2012
Posts: 6
Penguinator is on a distinguished road

Penguinator is offline
So I need my mac to be able to read USBs when I boot my mac while holding alt/option. On my older mac, this does not happen, and I can not see the USB, while on my newer mac I can see the usb during alt/option boot. They are both running mountain lion, so how can I get my older mac to show the USb during boot
QUOTE Thanks
mrplow

 
mrplow's Avatar
 
Member Since: Oct 01, 2007
Location: UK
Posts: 6,637
mrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond reputemrplow has a reputation beyond repute
Mac Specs: 27" iMac i7 (2011) 10.9, iPhone5s, iPad Air, AppleTV2

mrplow is offline
How old is your older Mac? Which model?

Some older hardware just doesn't have the required built in support for booting from a USB device.

External hard disk acquisition addict - but admitting the problem is the first step to a robust backup

Please use the reputation system if you think you've been helped - top right of this post
QUOTE Thanks

Post Reply New Thread Subscribe


« Cannot import Iphoto into Photoshop | Mac screen goes black... »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
Running Windows on a Mac: A Switcher's Guide cwa107 Running Windows (or anything else) on your Mac 283 03-13-2014 04:15 PM
Kernel Panic? Mac Pro wont boot waypoint64 OS X - Operating System 2 09-19-2010 06:12 PM
Mac doesnt boot from Win xp CD spveer Running Windows (or anything else) on your Mac 3 08-19-2009 09:06 AM
Mac Users Get More ISP Choices schweb Apple Rumors and Reports 1 03-06-2003 10:57 AM

All times are GMT -4. The time now is 11:24 PM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?