Questions tagged [readonly]

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How to add a static IP address to a network interface using systemd.networkd, if the filesystem is read-only?

I have a situation where I'd like to add a static IP address to one of the network devices on an embedded Linux machine, via systemd.networkd. Normally I'd do that by creating a file like /etc/systemd/...
Jeremy Friesner's user avatar
-1 votes
1 answer
80 views

SCP copy remote to local returns "Read-only file system" error on remote folder

I used the following command: scp -r root@IP:/home/user/remotefolder /localfolder After entering my passphrase (I'm using SSH key), I get the following error: /remotefolder: Read-only file system ...
Limerick's user avatar
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0 answers
42 views

BTRFS partition regularly becomes read-only

I have/home mounted on a btrfs partition and it regularly (after a few minutes) becomes mounted read only after which I need to reboot for it to become rw again. journalctl tell me the following: $ ...
stdcerr's user avatar
  • 2,037
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1 answer
40 views

Chagnes done to the rootfs do not redirect to the overlay set in fstab

The fstab is a link to the next fstab file: # <file system> <mount pt> <type> <options> <dump> <pass> /dev/root / ext2 ro,noauto 0 1 proc ...
קובי עיני's user avatar
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0 answers
20 views

FAT32 SD Cards and Other Removeable Drives Give Off Read Only Error and Input/Output Errors

Distro: Debian 12.0 (Bookworm) Greetings, I really need help with with an error I get on seemingly every sd card or portable storage device formatted to fat32 that I use. Basically, whenever I try to ...
Vivian's user avatar
  • 1
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1 answer
141 views

Read/write /etc with read-only filesystem

I have a setup for an embedded project where I'd like to keep the root filesystem read-only and system configuration on a read/write partition. Users cannot install programs, but they can modify ...
A. Que's user avatar
  • 573
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1 answer
44 views

Why is chmod working inconsistently between files?

I am making 3 sites in Drupal and need to frequently change the settings.php file in each website folder. This file is read-only for security reasons by default, so before I can edit it, I use: chmod ...
GeorgeCiesinski's user avatar
1 vote
0 answers
26 views

NetworkManager refuses to follow symlinks to another filesystem

We're building a pseudo-embedded system, where we're trying to replace Centos7.x with RHEL9.x (or AlmaLinux9.x). CentOS7.x used config files as scripts in /etc/sysconfig/network-scripts but RHEL9.x ...
Popup's user avatar
  • 441
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1 answer
69 views

Fstab adding data=journal crashed my Linux' ext4 upon boot, how to fix?

I changed my /etc/fstab from: UUID=f1fc7345-be7a-4c6b-9559-fc6e2d445bfa / ext4 errors=remount-ro 0 1 UUID=4966-E925 /boot/efi vfat umask=0077 ...
Vlastimil Burián's user avatar
0 votes
1 answer
85 views

How to enter and Exit out of Vim edit mode when using less?

I mostly use less when looking through logs or config files as I expect it to be read-only. However every once in a while I enter into Vim mode where I can make changes to the file I want to be read ...
MichaelE's user avatar
  • 103
1 vote
1 answer
76 views

external HDD drive become Read-only file system with wrong file system type

I have a Toshiba HDD with an ext4 file system that I have been using extensively until yesterday. Suddenly, it has become a read-only file system, and when I run fdisk -l, it shows the type as HPFS/...
iago's user avatar
  • 125
0 votes
1 answer
78 views

Plank dock shows read-only error in terminal

When I run plank dock in the terminal console I see the following errors popping up: [WARN ...] [Preferences:192] '/usr/share/themes/io.elementary.stylesheet.blueberry/plank/dock.theme' is read-only! [...
Nadu's user avatar
  • 101
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0 answers
24 views

Read-Only mode for the OS - best way to make an inaccessible SD card last longer?

It's for a book navigation device for street children, using recycled laptop LCD's where the SD card would be encapsulated in cement and very difficult to change. If the bits of an SD card are not re-...
bandybabboon's user avatar
3 votes
4 answers
179 views

Why can I still write to /dev/null even after /dev is mounted read-only?

I was surprised to discover that I can still write to /dev/null even after remounting /dev to be read-only. Here is a demonstration: # echo foo > /dev/null # echo foo > /dev/foo # mount -o ...
mpb's user avatar
  • 1,511
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0 answers
130 views

Overlay as root - can I change it to read-only?

I have an SBC onto which I installed Debian Bullseye. Now, I wish to make it as proof-as-possible to power-recycles, and I'm thinking on setting the rootfs read-only: that way no file on rootfs can go ...
Daniel's user avatar
  • 319
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1 answer
30 views

Cannot modify /lib on Gentoo live image

I am trying to install Gentoo on my laptop. The wifi included is not supported by the Linux kernel, so I found a driver for it. When I went to install the driver to /lib/modules/..., I got the error: ...
922073's user avatar
  • 3
0 votes
2 answers
24 views

How Can I Put Something in a RO FS (Linux Debian) if it will Not Boot?

I have a Debian Linux install that boots but only to a specific point... The booting stops at a firmware error. My system seems to be RO and when I boot into a "safe mode," to alter the set ...
De Funct's user avatar
  • 105
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0 answers
110 views

HDD randomly goes Read Only on Ubuntu

I have a system with one SSD and one HDD attached. The Ubuntu 22.04.1 LTS has been installed on the SSD. The HDD has a few partitions and one partition has Windows 10 installed as well. The dual boot ...
Nimila Hiranya's user avatar
-3 votes
1 answer
382 views

How to make a drive read-only?

how to make SSD drive read-only? Linux, windows, and mac and make a way to rewrite when the drive needs to update Like rewrite CD / DVD When boot from disk can not be modified But as data disk on set ...
kc0hwa's user avatar
  • 11
0 votes
0 answers
243 views

btrfs external SSD forced read-only, will mount, some files unstable — how to recover data?

I formatted an external SSD with the btrfs filesystem and had been using it fine reading and writing to it whether I am root or the only other user. I think Pop OS did not like how the ssd was removed ...
needtowrite's user avatar
0 votes
1 answer
3k views

Centos "cannot create temp file for here-document: Read-only file system"

I am getting this error what ever I want to do on my server cannot create temp file for here-document: Read-only file system cpanel, whm and all websites are Down All my system files are read-only. I ...
alirezaashrafi's user avatar
0 votes
0 answers
812 views

cant echo or touch into file.txt Read only File system

Hi I cannot touch or Echo into file because it says Read only file system (these are the permissions from the Root directories) how to change file system so I can write files and so forth?
David 's user avatar
  • 101
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0 answers
18 views

where is shm_dir defined

I have problems using shm_open, from what I've read here I understood that shm_open is the same as the regoular open just adding shm_dir before. My question is: how can I set that specific value that ...
DDS's user avatar
  • 323
1 vote
1 answer
1k views

File system goes read-only on NVMe SSD seemingly at random

I am currently running a somewhat fresh Kubuntu 22.04 install on a relatively new M.2 NVMe drive. However, I have a problem where my computer drive (I think) turns read only, causing the system to ...
Lirik's user avatar
  • 11
0 votes
0 answers
74 views

Not able to add user to system with readonly fs in ubuntu linux

According to the requirement I want to add a user to an OS where the / is mounted as readonly. As we know that the OS will not be able to create lock files and edit passwd files the operation fails. ...
parthi_for_tech's user avatar
0 votes
0 answers
285 views

Repair of very stubborn readonly filesystem error after sfill on SSD

I did an sfill command on an SSD, and during that connected a drive, so the Ubuntu thusly spat out some error and apparently (which I saw at next reboot) went into "read-only filesystem" ...
user avatar
1 vote
1 answer
118 views

USB Drive is not detecting and is in read only mode with error NTFS signature is missing

command : sudo hdparm -r0 /dev/sdb Output : /dev/sdb: setting readonly to 0 (off) readonly = 1 (on) By any chance it will be turned off ? If yes how can we? Issue: USB is not detected. Unable to ...
Srinathiya Murugesan's user avatar
1 vote
2 answers
147 views

Read only file can be written through the network

I have a text file for which I have set chmod 444 file and I effectively see -r--r--r-- 1 blah blah 310 Aug 27 20:00 file with ls -ls. If I try to write on this file e.g. with nano I cant, this is ...
user171780's user avatar
0 votes
0 answers
172 views

List of read only filesystems

What are all the read only filesystems still in use today? I'm looking for one to create a read only archive flash drive. The only ones I know about so far are: SquashFS ISO 9660 I'm looking for ...
olfek's user avatar
  • 711
1 vote
1 answer
4k views

copy/paste not working in ubuntu22

just copied some files from /home/user/Downloads directory and tried pasting into ntfs filesystem,and got this way "could not paste files;permissions do not allow to paste files in this directory&...
techquest's user avatar
0 votes
1 answer
1k views

Managing systemd services on read-only filesystem

I am looking for strategies how to manage enabling and disabling of systemd services on a read-only filesystem. It's not possible as the multi-user.target.wants directory contents get modified. ...
chameleon's user avatar
0 votes
1 answer
236 views

My bootable pendrive turns into (read only) generic flash drive how to fix it

My booted drive has gone read only mode. no operations can be done on my drive So i was installing linux (pop_os) on my laptop. i successfully installed it on my laptop with my 8gb booted pendrive. ...
Tanuj Rarh's user avatar
2 votes
0 answers
75 views

Should only / be mounted as Read-Only for security in case of power loss, or also /boot

I have an embedded system (specifically, Google Coral with Mendel Linux), which will be running some models. I expect it to get turned off in not a secure way (basically plugging it off) mostly every ...
M.K's user avatar
  • 143
1 vote
1 answer
2k views

Cannot install packages, error: E: Sub-process /usr/bin/dpkg returned an error code (2)

I already few days cannot install any packages, I getting this error: dpkg: error: unable to access the dpkg database directory /var/lib/dpkg: Read-only file system E: Sub-process /usr/bin/dpkg ...
KKL344's user avatar
  • 11
0 votes
0 answers
479 views

Read-only NTFS flash drive refuses to format

I have this SanDisk Cruzer Edge where it's a write-protected NTFS partition that I got from my dad as I needed a flash drive. I tried using GParted, didn't work, I saw something online that used the ...
sgal5208's user avatar
1 vote
1 answer
1k views

Mount root filesystem with user permission using sshfs

I want to use sshfs to mount filesystem folder on my machine (let's say ~/home). I would like to be able to edit files inside the / folder that got mounted using any editor (for example, edit /etc/...
23176xsk's user avatar
0 votes
1 answer
743 views

How to run a process with read-only permissions?

I am running a bunch of python3 scripts containing programming assignments. I'd like to run them on a machine such that they are unable to modify (add/remove/write-to) the file system. Is there a way ...
hazrmard's user avatar
  • 123
1 vote
1 answer
94 views

Can ls show read-only files in a specific color?

I like using ls --color=auto and I know how to use dircolors to change the colors of ls's output. I want ls to display read-only files in a color different than "normal" files but don't see ...
David Levner's user avatar
0 votes
1 answer
191 views

Installing linux mint on pc with hybrid drive, ssd is read only (no dual boot)

I'm attempting to install linux mint on my pc with a hybrid drive system (SSD and disk); not dual boot. I'm booting linux mint from a usb and install is erroring on grub install, but says the ...
Jason's user avatar
  • 101
0 votes
1 answer
973 views

Push contents of a read-only file system to remote git repo

I have on system A a (remote, read-only mounted from server B via sftp/sshfs) filesystem with data on it that needs to be pushed to a remote git repository regularly. I was not able to find a git ...
Alexander Stumpf's user avatar
1 vote
1 answer
583 views

"systemd-tmpfiles-setup.service" slow on read-only filesystem

On a headless embedded computer (booting on a read-only filesystem), I see that systemd-tmpfiles-setup.service is rather slow, and prevents other services to start earlier (I checked with systemctl ...
Basj's user avatar
  • 2,351
0 votes
2 answers
333 views

Unable to format or use two USB flash drives

I have 2 USB's I'm unable to use... One went out a Month ago and the second followed suit yesterday. The USB's are Supersonic RAGE Elite 128GB drives and I've tried everything I can think of through ...
Austin Reed 's user avatar
0 votes
1 answer
377 views

Can not delete files

I copied some files from a DVD using the 'cp -a' command. Now, I can't delete any of the copied files. I set selinux to "permissive" to remove that as source of the problem. Here is what ...
Garnet's user avatar
  • 366
1 vote
2 answers
954 views

Assigning value to readonly variable during declaration

Is the following type of readonly variable definition valid?: #!/bin/sh readonly a=1 readonly b=1 readonly c=$((a+b)) Is this type of declaration in combination with assignment allowed/recommended?
Rahul Bharadwaj's user avatar
2 votes
1 answer
134 views

How do I create linux system that will not save changes

Is there a way to create linux-based system (best would be centOS), that would be tabula rasa after every reboot ? The system would only save changes during runtime. So I could install packages, ...
John Ronald's user avatar
1 vote
1 answer
6k views

Removing write protection on a usb drive

I have an usb flash-drive that is write protected since a system crash. In the dmesg, the device write protection is first off, then it is turned on. Here is the dmesg: sd 2:0:0:0: [sdb] 60566016 512-...
Bertrand125's user avatar
1 vote
1 answer
842 views

How to install SELinux policy for guix-daemon.service on Fedora?

After installing Guix, how do I install the bundled SELinux policy, which is intended to allow the guix-daemon.service to run? To install Guix 1.3.0 on Fedora 34 Workstation, I used the shell ...
Roman Riabenko's user avatar
0 votes
1 answer
3k views

How to mount an LVM from Read-only to Read and Write

I have a VM with an LVM. Occasionally when updates are performed, and the system has restarted it will go into a read-only state. This is an issue because I perform daily backups. Unfortunately, for ...
Dakota Coleman's user avatar
1 vote
1 answer
236 views

Privilege drop: Allow readonly access to file for unprivileged process on a readonly file system

An ideally least privileged process should be able to have readonly access to data on a filesystem, which itself is readonly. Hence this is the situation root@linux# ###(1) filesystem is untrusted + ...
humanityANDpeace's user avatar
7 votes
2 answers
1k views

Bash variables do not expand inside array if declare is used

Recently I decided to read a bit more on the bash built-ins declare, local, and readonly, which led me to switch from: local variable_name variable_name='value' readonly variable_name To: ...
James Pond's user avatar

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