|Jun 25, 2011, 02:47 PM||#1|
3 Beeps when booting from external USB HD
I got the 3 beeps at startup when I tried to do a clean install of SL on my 2011 15" MBP from a external USB drive with Snow Leopard imaged on a volumn. I thought the 3 beeps mean that something is wrong with the RAM but I can boot just fine normally.
Any idea on how to solve this problem? Thanks.
|Jun 25, 2011, 03:08 PM||#2|
-13.3 MacBook Pro;OS 10.7.2 w/ BootCamp Windows 7.
-iPad 4th Gen 16GB wifi
|Jun 25, 2011, 03:19 PM||#3|
The external drive is not self powered. It's a 3.5" enclosure plugged into the wall. My iMac boots fine from the SL image from this external drive though as I tested to see if it was the fault of the drive.
|Jul 13, 2011, 02:36 PM||#4|
Get the same 3 beeps when booting from USB
Hi, I get the same 3 beeps when booting from external USB HD.
Been trying most of the day to reinstall os-x on my spanking new SSD and as I have replaced the superdrive with a harddrive bay and the original HD that came with the macbook I have to install from USB device.
I was unable to find the DVD that came along the macbook so tried using an old 10.6 disc but that one gave me instant kernel panic when booting.
Then I got my hands on a 10.6.3 image that I put on a USB drive. This then give me the 3 beeps when trying to boot from it.
The HD enclosure I use is powered by USB, using two cables.
I'm on the latest 2011 macbook pro 13"
Hope someone with the answer stumble on this thread
|Thread Tools||Search this Thread|
|thread||Thread Starter||Forum||Replies||Last Post|
|Booting with external USB attached finally works in latest build of Mavericks.||DarwinOSX||OS X Mavericks (10.9)||0||Feb 7, 2014 12:07 PM|
|Booting OS X from a USB drive?||laptoplover2||OS X||1||Sep 21, 2013 10:31 PM|
|Booting Windows from an External USB 3.0/TB drive?||FluJunkie||MacBook Pro||4||Jul 10, 2013 11:37 PM|
|booting Windows7 from USB||bergui45||MacBook Pro||0||Oct 23, 2012 03:27 AM|
|Booting from external HDD with USB?||Garnick||MacBook||1||Sep 2, 2012 10:42 PM|
All times are GMT -5. The time now is 08:43 AM.