Permission denied message when mounting external drive in single user mode

[garsidenrg]

Hello.

One day, my MacBook Air wouldn't boot up. After booting from the Install DVD and running disk utility, it said that there was a problem with the internal hard disk drive and that it needed to be reformatted and OS X reinstalled.

I am now trying to backup some of my files onto a 1TB external hard disk drive using single user mode.

I have created the directory with the following command...
mkdir /Volumes/lacie

...and are trying to mount the drive with the following command...
/sbin/mount_hfs /dev/disk1s1 /Volumes/lacie

...however, it comes back with this message when I press return:
mount_hfs: Permission denied

Please can somebody help.
Thanks,
Nigel Garside.

 

[mx12]

Sudo

Try putting sudo before you command:

sudo /sbin/mount_hfs /dev/disk1s1 /Volumes/lacie

This makes the command execute as a super user.

 

[garsidenrg]

still no

Try putting sudo before you command:

sudo /sbin/mount_hfs /dev/disk1s1 /Volumes/lacie

This makes the command execute as a super user.

No. Sorry. Doesn't work. Same message.

Thanks for trying.

 

[tiiv]

Wrong disk name probably? Isn't it something like /dev/rdisk1s1 or the like? What devices do you have in /dev that has "disk" in its name?