How to make read-only file system writable?


If a filesystem has been mounted read-only, chmod will not work since it's a write operation too.

Try remounting it read-write:

sudo mount -o remount,rw '/media/SGTL MSCN'

If the device has a write lock on it (like SD memory cards), you need to turn it off. Hardware locks cannot be disabled by software. Note that the write lock on SD memory cards is located from the sight you see the letters near the up left corner and it looks like a very small switch.

Some filesystem drivers may also not support write operations, this is the case with the older NTFS module supported by Linux. For NTFS filesystems, be sure to use the ntfs-3g driver which should be picked automatically nowadays. If not, you can force the driver with something like:

sudo mount -t ntfs-3g -o uid=$(id -u) /dev/sdb1 /mnt/

(where /dev/sdb1 has to be substituted for your block device and /mnt/ for your...

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We have some gotten various files on some hard drives from somewhere. I would like to reorganize the files on there and add some more, but when I try to do that I get an error saying the drive is a read-only filesystem. Finder won't let me do anything to it, and can't do anything in the Terminal either.

How was the drive made read-only in the first place? How can I make it writable?

I am not Mac OS X 10.6, and the drive when mounted says FREECOM HDD. Have access to a Windows computer as well if needed.

When I click on the Info button in Disk Utility on the drive I get the following info:

Name : SAMSUNG HM160HI Media Type : Disk Partition Map Scheme : Master Boot Record Disk Identifier : disk2 Media Name : SAMSUNG HM160HI Media Media Type : Generic Connection Bus : USB USB Serial Number : 10D0B58436FF Device Tree : IODeviceTree:/PCI0@0/EHC1@4,1 Writable : Yes Ejectable : Yes Location : External Total...
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I want to change some files on my router. Firstly i can change everything in /var, but i want to change /etc/fstab. when i try to change it, i get an error message that says filesystem is read only.

Busybox inside router, has limited commands, so i had got busybox binary for mips, and upload it by tftp (tftp -g -r busybox-mips my.i.p.addr), so now i can use full commands (/var/tmp/busybox-mips command).

There is no rom inside router (sdram), or there is no another partition. it must be related with busybox.

# /var/tmp/busybox-mips df Filesystem 1K-blocks Used Available Use% Mounted on /dev/root 1344 1344 0 100% / # mount rootfs on / type rootfs (rw) /dev/root on / type squashfs (ro) proc on /proc type proc (rw,nodiratime) ramfs on /var type ramfs (rw) # Model: Airties 5021 Processor: BCM6332KFBG HS1037 P12 994981 N1 Memory: M12L64164A-7T (SDRAM) ANM1P02HL...
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How can I make the read only file system writable on BusyBox?

location: - date: October 27, 2012
I want to change some files on my router. Firstly I can change everything in /var, but I want to change /etc/fstab. When I try to change it, I get an error message that says the file system is read only. BusyBox inside the router has limited commands, so I got a BusyBox binary for MIPs, and uploaded it by tftp: tftp -g -r busybox-mips my.i.p.addr I can now use full commands (/var/tmp/busybox-mips command). There is no ROM inside the router (SDRAM), nor is there any other partition. It must be related with BusyBox. # /var/tmp/busybox-mips df Filesystem 1K-blocks Used Available Use% Mounted on /dev/root 1344 1344 0 100% / # mount rootfs on / type rootfs (rw) /dev/root on / type squashfs (ro) proc on /proc type proc (rw,nodiratime) ramfs on /var type ramfs (rw) # Model: Airties 5021 Processor: BCM6332KFBG HS1037 P12 994981 N1...

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I am not sure since when the filesystem on my digital audio player has been changed to be read only. I cannot copy files into it or remove files on it. Are there some .How to make read only filesystem writable on busybox? up vote down vote favorite. . To fix “Read only File system” issue when SSH access to IP Camera. ..How can I make a read only filesystem read write? It might be that you’re interacting with read only memory, but an ordinary file system can be remounted to write..How to make a read only filesystem writable. but when I try to do that I get an error saying the drive is a read only filesystem. Windows NT File System .I would like to mount this filesystem read only, Make part of read only filesystem writable. however on my Arch system I need to do..How to mount system rewritable or read only? Read only file system”. I have to use writable system command line option when starting the emulator..How can I make the read only file system writable on BusyBox? I get an error...

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Read Only

"This Word document is read-only" indicates that you're unable to make a modification you want to make to it;

"The pen drive comes with read-only status" suggests that you can't change what is on it. i.e. once the data is written on it, you can read it but can't do any other operation on it.

In conclusion, if data is truly read-only, you can read it with a device, but you can't modify it, erase it, append to it, concatenate it, copy it, or move it. The main purpose of read-only is to control how you use the data.

Remove Read-only Mode by DiskPart Partitioning Utility

Devices and media are often characterized as read-only mode, which actually can be changed to read-write by the user for further usage. When a drive has become locked in a read-only state, try to fix read-only error with the following simple instruction.

1. Click on your Start Menu and type cmd in the Search for programs and files field. Hit Enter key.


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Making a file read only is very easy in java. In this tutorial, we will learn following three things.
1) How to make a file read only
2) How to check whether the existing file is in read only mode or not
3) How to make a read only file writable in java.

1) Changing file attributes to read only

To make a file read only, we can use setReadOnly() method of File class. It returns a boolean value which we can further use to verify whether the operation got successful or not, same way as I did in the below program. As you can see that in the below program, I am changing the file attributes to read only of file “Myfile.txt” which is present in “C drive” of my computer.

import; import; public class ReadOnlyChangeExample { public static void main(String[] args) throws IOException { File myfile = new File("C://Myfile.txt"); //making the file read only boolean flag = myfile.setReadOnly(); if (flag==true) ...
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There are several reasons why you might want to make your root file system read only. I wanted to have a system on a flash disk, and since flash disks are damaged after repeated read-write circles the read-only root is a very nice solution. Other reasons why you would want to make your root partition read only include:

If you want maximum security for your server, and want it to boot from a read only medium (i.e. a CD-ROM) If you want to make your own live-cd To avoid that power loss or system crash damage the root partition. If you want to mount the same nfsroot on several thin clients

The following procedure is what i did to turn my SuSE 10.1 root file system to read-only. It should work on both earlier and later versions but i haven’t tested it yet. There could be better/more elegant solutions, if you think that something is missing please fill free to edit this howto.

Some of the information on this howto where found here.

You need to have root permissions on...
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I am trying to delete some files from my microSD card on my Ubuntu 16.04 (I am using MircoSD adapter in order to access my files). However the file system has been changed to 'read-only' and hence I can't delete the files in it.

I tried remounting it read-write (after I read it from here):

sudo mount -o remount,rw '/media/tuxication/MyDrive'

But it says:

mount: cannot remount rw read-write, is write-protected

I tried the other methods mentioned here but none seems to work.

Just to aid you with further details, if I want to format the microSD, it says:

Error wiping device: Command-line `wipefs -a "/dev/mmcblk0p1"' exited with non-zero exit status 1: wipefs: error: /dev/mmcblk0p1: probing initialization failed: Read-only file system (udisks-error-quark, 0)

Any idea how I might solve this?

Try this:

Open a terminal,

Press Ctrl+Alt+T

Run it:

exec sudo -i umount /dev/mmcblk0p1 dd if=/dev/zero of=/dev/mmcblk0p1 bs=1024...
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Partedutil Read Only File System During Write My Essay

Partedutil Read Only File System During Write My EssayPartedutil Read Only File System During Write My Essay Partedutil Read Only File System During Write My Essay. partedUtil: Error: Read–only file system Why can't Partedutil Read Only File System...

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More and more people are finding themselves using both Macs and Windows based PCs. While compatibility is almost a non-issue now days between Macs and PCs, as well as Macs and third party peripherals, there is one area that may still cause confusion. In this tutorial I will explain the “Read Only” error you may run into while using external storage devices, and also show you how simple it is to fix.

Quick Tip: Solving “Read Only” External Drive Problems on Your Mac

The Cause of "Read Only" Disk Errors

I have a USB drive that I purchased and use with various PCs at work and school. I am able to open the drive and can even copy files from the drive. But if I attempt to copy a file to the drive on my Mac, I get an icon telling me that I am not able to copy the file. If I try to delete a file, by pressing Command+Delete, nothing happens and, if I right click the file, the option to move it to the trash can is missing. Something is obviously not right with the...

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ow do I set a read-only permission for all of my files stored in /var/www/html/ directory?

You can use the chmod command to set read-only permission for all files on a Linux / Unix / macOS / Apple OS X / *BSD operating systems. This page explains how to setup read only file permission on Linux or Unix web server such as Nginx, Lighttpd, Apache and more.

How to set files in read-only mode

The syntax is:
## use only for files ##
chmod 0444 /var/www/html/*
chmod 0444 /var/www/html/*.php

How to to set directories in read-only mode

TO set directories in read-only mode, enter:
## use only for dirs ##
chmod 0444 /var/www/html/
chmod 0444 /path/to/your/dir/
# ***************************************************************************
# Say webserver user/group is www-data, and file-owned by ftp-data user/group
# ***************************************************************************

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A few minutes of preparation and planning ahead before putting your systems on-line can help to protect them and the data stored on them.

There should never be a reason for users' home directories to allow SUID/SGID programs to be run from there. Use the nosuid option in /etc/fstab for partitions that are writable by others than root. You may also wish to use nodev and noexec on users' home partitions, as well as /var, thus prohibiting execution of programs, and creation of character or block devices, which should never be necessary anyway.

If you are exporting file-systems using NFS, be sure to configure /etc/exports with the most restrictive access possible. This means not using wild cards, not allowing root write access, and exporting read-only wherever possible.

Configure your users' file-creation umask to be as restrictive as possible. See Section 5.1.

If you are mounting file systems using a network file system such as NFS, be sure to...

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This is my first article in what I'm hoping will be a series of articles on system programming for POSIX compliant operating systems with focus on Linux. Actually I've touched this topic a while ago when I wrote three articles about library programming on Linux (static libraries, dynamic libraries and dynamic libraries using POSIX API). In this series my goal is to go trough basics of Linux system programming from the easiest topics like open file, read file and file write to a bit more complicated things like Berkeley sockets network programming. So lets get started with environment setup and an example of program that copies source file into destination file using POSIX API system calls to demonstrate open(), read() and write() system calls on Linux operating system.

Configuring your environment

I'll use my trustworthy Ubuntu Linux operating system but you can actually use any POSIX compliant operating system, the only difference will probably be that you will need...

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Download Demonstration MDB (Access 2000+) (Zipped)

UPDATE v1.7: 18/08/2011 -- Fixed Windows XP support - broken in v1.5/1.6
UPDATE v1.6: 03/08/2011 -- Fixed accessing Properties::Item(String) - broken in v1.5
UPDATE v1.5: 08/07/2011 -- Fixed crash on Office 2010 x64 SP1
UPDATE v1.4: 26/02/2011 -- Improved VBA loader code
UPDATE v1.3: 14/01/2011 -- added Office 64-bit support
UPDATE v1.2a: 16/03/2010 -- added WriteSupport parameter to OpenFile
UPDATE v1.2: 16/03/2010 -- added write support for the properties (requires Vista or 7).
UPDATE v1.1: 16/03/2010 -- added XP support. Faster name resolution for single props.
UPDATE v1.0c: 03/03/2010 -- minor performance improvements.
UPDATE v1.0b: 03/03/2010 -- minor bug fix.


Have you ever wanted to find out generic properties about a file, such as the duration length of an MP3 file, or the date a JPEG picture file was taken on a digital...

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