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Posted (edited)

Suspect disk corruption on a MacBook Pro

 

Can I plug the HDD in via USB to a Windows machine and do CHKDSK

 

I also have an iPad

 

The Macbook will not boot - Apple logo comes up - line goes across - then repeats again and again

 

Tried holding ALT on startup - The symbol of the HDD comes up but NOT the RECOVERY Section icon

 

Thanks

Edited by leachim
Posted

I don't know if chkdsk would help you there, as Windows doesn't natively support the mac HFS filing system.

 

As the computer restarts, hold down the Command (⌘) – Option (⌥) – R combination and see if that lets you go into the recovery section so you can access disk utility then

Posted
Do you still have the installation media that came with the MacBook? If so, you can boot from that and run Disk Utility to check for errors
Posted
If I can't find it, can it be downloaded?

If you have access to another Mac (and a spare 8GB+ USB flash drive that can be erased) you can can download the OS X installer for free from the Mac App store...

 

https://itunes.apple.com/gb/app/os-x-el-capitan/id1018109117

 

To create the bootable USB installer use the 'createinstallmedia' command from Terminal, Install Disk Creator or DiskMaker X.

 

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/[color="#FF0000"]Untitled[/color] --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction

 

Note. 'Untitled' is the name of the USB flash drive you wish to create the bootable installer on.

Posted

Very useful

 

Will this USB be able to fix potential errors on the hard drive, or is it just for reinstallation of the OS ?

 

And, which buttons do you press on boot to make it boot to USB !?

Posted (edited)
Will this USB be able to fix potential errors on the hard drive, or is it just for reinstallation of the OS?

You can also run Disk Utility from it (it's in the menu at the top).

 

And, which buttons do you press on boot to make it boot to USB !?

The Option (Alt) key. Then select the USB drive.

Edited by Arthur
Posted
Thanks, but it wont show "Recovery HD" on ALT + Power button, and CMD+R doesnt work

 

Preform a verbose boot [Command + V] and it will run a hfs check. If that fails. run recovery from the web [Command - Option - R] and it will boot into Recovery where you can preform error checks or reinstall iOS then rebind the mac to AD and allow user to log in.

Posted

Yeah - Command+Option(ALT)+R got me into downloading stuff. It froze on typing a password for the WiFi on more than one occasion, so I chose a signal with no password and it succeeded.

How bizarre

Cheers

:cool:

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