macbook pro 3 beeps when booting from usb

#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB HOW TO#
#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB INSTALL#
#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB CODE#
#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB DOWNLOAD#
#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB MAC#

This stuff is bonkers to me because I can usually walk up to any other old microcomputer and make it go.

#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB HOW TO#

I am still deeply interested in to answers about this and trying to learn more about Apple's EFI/GPT system and how to wrangle it, because I've run into a variety of problems in this general area before either helping people with their Apple computers or trying to refurbish hand-me-downs like this. The symptoms a Macbook displays when the EFI is fuxxored are bewildering and hilariously/frustratingly weird. Response by poster: Update: Man, I really don't understand EFI and GPT. Posted by mwhybark at 3:06 AM on April 6, 2018 Before you head down that road, though, try the external bootable drive method if you can swing it.

#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB DOWNLOAD#

I concur with the analysis upthread: make an Apple ID and use it to download the needed installers if you must. Unfortunately 10.6 - 10.9 appear to be more or less solely tied to the App store for distro. OWC says that those systems should be compatible with Mavericks, 10.9. Since you specify 10.6 as the shipped native OS I assume that the unit you have is either an MPB 5,5 or 7,1. I note that A1278 as a model number covers no less than 12 versions of MB and MBPs. I don't know if ADCs are paid and subscribed anymore but I know they used to be.

This 2015 article states that 10.6 is available for download only to ADC Apple IDs. If I had to guess, I would be giving the stinkeye to your current internal drive.

#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB INSTALL#

I would try to install a bootable 10.6 to this theoretical external using your discs and go from there. posted by loquacious to Computers & Internet (11 answers total)ĭo i gather you do not have a working external bootable drive that contains a clean 10.6x? Do you have access to an external drive of sufficient size, say 300-500gb? I've tried installing and recovering to a complete blank drive like it's just a new upgraded drive, and it still won't recover to factory.Īm I doing something wrong or missing something here? This is driving me totally bonkers. Nothing is seemingly restoring the EFI and boot manager, and I don't understand what the hell is going on at this point.

#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB MAC#

I have tried both 2g RAM modules individually - both boot fine in Ubuntu, and both test as good in Ubuntu and Mac hardware test mode. I have hard reset the NVRAM/PRAM even with the memory removed as instructed on some Apple troubleshooting pages. (Ubuntu live still works, and will still verify RAM and drive as good.) On reboot, I still can't boot to target install disk without RAM error beep code. (And I have recovery disks anyway what the hell, Apple.)

I cannot actually install the OS from App Store because I don't have a working App Store account or Apple ID. I can recover, erase and rewrite the partition for OS X and write the tables out. Hardware test mode (Boot + D key) can check out and verify the RAM, no beep codes. Installing Ubuntu throws the same disk error and dump, even after just checking the drive and telling me it was fine.

Meanwhile I can still boot to Ubuntu from USB and the RAM checks out just fine. Apple's support says this is a RAM error.

#MACBOOK PRO 3 BEEPS WHEN BOOTING FROM USB CODE#

The stand alone 10.6 show the apple and pinwheel, but then gives the BIOS beep code of three beeps separated by about 4-5 seconds, continuously. (Have let this ride for 30+ minutes, it's not an update.) Reboots to installation media now do nothing for two of the disks (original and the Air USB stick.) No activity pinwheel comes up at all, just the apple logo. Live session works fine, go to install, it forces UEFI boot mode (overriding and overwriting rEFIt and Bootcamp and wiping the whole drive - in theory.Įxcept it throws an error on installing to the drive and aborts back to Ubuntu live desktop session, and now everything is totally screwed up.Īfter this first 'force UEFI' install option: I'm trying to use to set up Ubuntu Studio (17.10). rEFInd also works and allows boot device selection. (Original 10.6 DVDs, 10.6.3 standalone DVD, and a Macbook Air 10.6 USB key.)īootcamp works fine. Also, the OS installation media I have checks out. Hardware checks all came back clean, including RAM and HDD. The stock OS (10.6) was snappy and just fine, aside from the fact that it has sadly walled itself into its own garden where apparently I can't even get a modern browser installed or even a package manager, but I digress.

Macbook pro 3 beeps when booting from usb