Change permission from single user/recovery mode

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Tomvkgames Author

Level 1

8 points

Change permission from single user/recovery mode

So I have a very very big problem.

In my MAC I have only 18mb more free disk space.

But the problem now is that my MAC can't boot anymore, I think that it is because of the little space that is left.

So now I'am trying to delete files from terminal inside the single-user mode.

And before I can delete some files, I first have to change the permission.

I try to change the permission with: chmod ugo+rwx *.

I do this inside a game folder name League\ of\ Legends.app.

But then I get the message: read-only file system.

Is there any other way I can change the permission!?!

Or is there a way I can be able to execute as admin from single-user mode?

Greetz Tom

MacBook Pro, OS X Yosemite (10.10.4)

Posted on Jan 10, 2016 5:16 AM

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Answer 1

Best reply

Alberto Ravasio

Level 5

4,279 points

Jan 10, 2016 7:25 AM in response to Tomvkgames

You better start your computer from Recovery partition and deleting files in Terminal from there. Disks are already mounted in read/write mode. Be very careful.

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Answer 2

Tomvkgames Author

Level 1

8 points

Jan 10, 2016 7:41 AM in response to Alberto Ravasio

Yes I tried this before, but in Recovery mode I can't use sudo!

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Answer 3

Old Toad

Level 10

207,745 points

Jan 10, 2016 11:22 AM in response to Tomvkgames

Connector your Mac to another Mac in Target Disk Mode, Transferring files between two computers using FireWire and delete the necessary files (or copy then to an external HD if you want to save them) from the second Mac.

It's strongly recommended that one maintain a minimum of 10-15 GB of free space for optimal system and application performance. More is you use iDVD.

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Answer 4

Tomvkgames Author

Level 1

8 points

Jan 10, 2016 12:16 PM in response to Old Toad

1 problem: I dont have another mac!

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Answer 5

rccharles

Level 6

12,957 points

Jan 10, 2016 5:33 PM in response to Tomvkgames

Cannot boot up in recovery mode right now😉.

Try single user mode. This will boot you up in root.

You need to get into single use mode for steps one and two that are listed below.

This page will tell you how to get into single user mode.

http://support.apple.com/kb/HT1492

Basically, you hold down the command + s key then powering on your machine. The command key has a little apple symbol on the lower left.

( Do you know Unix. You are in a Unix single user console. ) The setup commands you need should be listed on the screen. For Mac OS 10.4.11, the commands are:

# Type the follow two instructions to access the startup disk in read/write.

# check out the filesystem.

# ( in case of partial success repeat this command until errors go away. )

/sbin/fsck -fy

# Gain read / write access to your startup drive

/sbin/mount -uw /

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