How to unlock a locked drive?

Try:

Fix Permissions for a Locked Drive

Open Terminal in the Utilities folder. Paste the following commands at the prompt. Press RETURN after each. The first command will prompt for you to enter your admin password. It will not be echoed to the screen. After entering your password press RETURN again.

sudo chflags 0 /Volumes/*

sudo chmod a+rx /Volumes/*

killall Finder

An alternative is to download BatChmod and use it to fix the permissions.

That drive is configured for Windows, not Macs, which is why DU can't do anything with it. You need to do this:

Drive Preparation

1. Open Disk Utility in your Utilities folder.

2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.

3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.

4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.

5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.

6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

I did this. It went away.

Terminal:

diskutil list

Find for the disk you want to format disk0, disk1, disk2,...

Disk 0 is usually the one you are booting your os x so dont use that

I closed all mounted virtual volumes

name: partition name

JHFS+: format type

diskutil eraseDisk JHFS+ name disk2

Yep. in my case it was a left over from a linux installation of only few GBs. but it would not go away with formatting from Disk Utility. I think with terminal you get more access. not sure though. Im begining to like use of terminal commands rather than the GUI ones.

Did it work for you the same way?

Hi

Am not able to use this command , it errors out as sudo command not found , can you please help me to fix this issue ...

the drive is locked is the error which i am getting on my mac book pro..

please help me out 🙂

thanks

prasant

Hi,

### BEFORE YOU BEGIN, THIS WILL ERASE ALL YOUR DATA! YOU WILL NOT GET THIS DATA BACK! ###

For anyone who has the same issue, here a perhaps more in detail way of what to do:

1) Boot into recovery mode (option +r when you power on computer or press alt and choose recovery disk)

2) Open terminal from utilities

3) Format the volume where OS X is installed, example in my case where OS X was installed on disk02s:

# diskutil reformat /dev/disk0s2

4) Now you can erase the volume / partition with following command where OS X is in my case the name of the partition:

# diskutil eraseVolume JHFS+ OS X /dev/disks02

5) Go to disk utility, erase or format the whole disk (that is what I did anyways)

6) Go to reinstall OS X and hopefully you can select your disk as target

If not working, drop me a line @ http://christian.langfors.fi and I'll try to help & update this how-to.

Best Regards,

Christian

Hi, I have WD My Passport external hard drive 2 Tera Ultra.

It don't appear on finder nor on Utilities.

I guess it locked, I have use "sudo chflags 0 /Volumes/*" to see:

WARNING: Improper use of the sudo command could lead to data loss

or the deletion of important system files. Please double-check your

typing when using sudo. Type "man sudo" for more information.

To proceed, enter your password, or type Ctrl-C to abort.

Password:

I don't want to lose my data, this will delete my data? if No I proceed.

You might want to consider starting a new discussion. Since this one is a couple of years old, less people are likely to look at it. A new post would be much more visible. You can link to this one.

You won't lose any data IF you run the correct command.

You should be logged in to your admin account.