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Questions tagged [ext4]

The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.

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EXT4-fs error - Failed to write entry, ignoring: Read-only file system

I have a Asus R556L, running Ubuntu 18.04LTS on dual boot with Windows 10. Ubuntu works fine, but after working for a while, it goes to the black terminal screen with these errors, very similar to ...
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2answers
359 views

What is the journal?

I shut down my computer the hard way and next startup there was message on boot for several seconds saying recovering journal. Four startups later and the message was not there - only the first time. ...
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1answer
43 views

Are there any drawbacks to creating ext4 file systems with maximum inodes?

Are there any drawbacks to creating ext4 file systems with 2^32-1 inodes? I have a 1tb drive and I would like to store 800 million to 1.5 billion small files on it. It seems that the max is 4 billion,...
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1answer
34 views

Superblock errors after 2 new installs

I have a 2 yr old Samsung SSD 850 Pro 128GB drive. With a fresh format, I installed Xenial on it a couple of months ago. Once in a while I would get I/O errors with bad super block. So, I copied ...
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28 views

18.04 file recovery question

I have moved to Ubuntu some time ago and was 'migrating' my NTFS filled with datato ext4. I was using GParted to move chunks of free space, and then move the data from NTFS part to it. All was ...
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1answer
132 views

Why remounting root file system takes a lot of time?

I have slow boot. From systemd-analyze blame, i can see that dev.sda1(which holds root file system) is taking a lot of time(around 9 seconds) Now,I have 4 ext4 partitions in my system. From dmesg : ...
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1answer
80 views

After installation, the file system change from ext4 to ext3

Install 16.04 Desktop Laptop I installed 16.04 with default setup and it was ext4 file system in another computer. How to fix it?
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23 views

how to recover a deletd ext4 GPT partition on one drive, from a DD'ed 2nd drive that was RM -RF'ed [duplicate]

good day to all! I goofed. In prepping for a migration .. I DD'ed a drive to another spare to have a backup of the files. Then I booted next weekend not knowing that I mounted the 2nd DD'ed backup ...
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1answer
50 views

Set a password for external hard disk without format it

My external hard disk is 1TB in size and nearly 900GB data on it. I want to set up a password without format it. Is it possible? file format is ext4.
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1answer
59 views

How to migrate from ext2 to ext4 when my filesystem is encrypted (LUKS)?

The reason why I am posting this question is that Dropbox has notified me (via e-mail), that it will soon no longer support ext2 for its desktop client. I have a LUKS encrypted file system on top of ...
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1answer
67 views

How to check if journaling is enabled on any partition

i need to know which partitions have has_journal flag enabled i know i can run tune2fs -l /dev/block/sda1 | grep features is there a way i can check all partitions in /dev/block* and only list ...
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66 views

Ubuntu Automount corrupts ext4 partitions of Android install?

I've been experimenting with dual-boot between Linux and Android on an x86 device which came with Android + Windows preinstalled (Chuwi Hi10 Pro). I soon found out that simply booting Ubuntu (either ...
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48 views

Unable to access an ext4 partition on external HD

I'm in trouble with a large 4 TB drive, which passes SMART Test and whose partitioning is as follows : fdisk -l /dev/sdb Disk /dev/sdb: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors Units: ...
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1answer
63 views

Filesystem corruption on shutdown/reboot

I have a system which dual boots between Windows 10 and Ubuntu 17.10. This system contains an SSD (both OSes are there) a couple of internal disks, one of which is formatted in NTFS and the other one ...
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0answers
256 views

EXT4-fs error Ubuntu 18.04 NVME SSD

I have a Lenovo ThinkPad T570, I've been running ubuntu 17.10 on it for work with no emergencies. Recently, I upgraded from 17.10 to 18.04.After upgraded, it probability got wrong with my hard-drive ...
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1answer
73 views

Incorrect available space output of df after deleting huge file

I've ran out of space and decided to free memory by deleting virtual machine files holding 3.8G. After that I see strange df output: $ df -h | grep 'sda2\|Use' Filesystem Size Used Avail Use% ...
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1answer
66 views

How to copy and restore to smaller partition

I want to copy a partition from hd to another with small partition. Must be: support ext4 file system can create image file for later use. compress images files copy only the used file system ...
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1answer
158 views

Accidentally resized ext4fs over 16TB limit, how to rollback?

We tried to increase the size of our 15TB partition with lvresize with the following command: lvresize --resizefs --size +1T /dev/vg0/mm No errors were displayed during the operation, but the result ...
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0answers
17 views

Missing free space after installation

I have done a fresh installation on Ubuntu 18.04 on one of our servers. The server has 15 disks each of 10 TB with Hardware RAID which has been configured in RAID 6. However, on checking df -h, the ...
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1answer
25 views

wrong owners on ext4 drive after new installation

I have installed linux from scratch on a machine that has previously linux running. On my additional "data" drive (only data, no system files) with ext4 filesystem, the file owners / groups are not ...
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0answers
352 views

Reinstalling Ubuntu 18.04

Something happens and I can't boot my system. I'm using Ubuntu 18.04 and I plan to reinstall it anyway. My hard drive has two partitions, one for my system and the other for my personal data. So if I ...
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0answers
204 views

Mounting won't work: bad magic number on newly created partition, none of the rescue blocks work

Good Day everyone. This is my first question. So I have this drive from an old RAID-System with 2.7TB of storage and I want to use it for some regular ext4 partitions: root@FluxCapacitor:/dev# fdisk ...
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1answer
14 views

Cannot change ownership of partition

I've been trying to change ownership of an ext4 partition but it just won't work, telling me there's no such file or directory. Here's the relevant output of lsblk └─sda2 8:2 0 411,7G 0 part /...
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1answer
124 views

How can I disable ACL on ext4 filesystem? [duplicate]

I'd like to disable ACL in /etc/fstab when mount. How can I do that?
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1answer
111 views

Can't use 100% of my hard drive partition

I'm a newbie in Ubuntu. I recently received my laptop with Linux Mint and Ubuntu 14.04. I didn't know how to format this, so I just used it the way I know. Then whenever I tried to write something in ...
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0answers
57 views

Ext4 External 8TB Drive Not Recognized in Ubuntu or Windows using Paragon

My Ext4 External 8TB Drive Not Recognized in Ubuntu or in Windows 10 using Paragon software. It used to be recognized in Windows 10 using Paragon. I tried booting from Ubuntu to check if the drive ...
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1answer
56 views

Deleted NTFS partition to ext4 conversion

I have deleted NTFS drive in Windows. After I have added it in Linux I did a quick format to Ext4 (sda9), but it says that 12 GB or (2% of the drive capacity) is used. Is this normal? Or should I do ...
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2answers
2k views

Dropbox is asking me to change location to Ext4

My Dropbox keeps telling me, that it needs to be moved to ext4 filesystem. The problem is, that when I have a look at my disk, I see this: It seems, that my filesystem already is ext4. Do you have ...
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0answers
43 views

should I use scratch area for storing data in Ubuntu?

In my Ubuntu 16.04 workstation most partitions are formatted as nfs, including the home directory (and I don't have admin rights to change it). Recently some apps (dropbox) require me to put data on ...
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6answers
2k views

Dropbox: ext4 isn't ext4

Some time ago Dropbox began to warn me about supporting ext4 as FS only. As a happy BTRFS user I wasn't happy, but have done this: dropbox stop dd if=/dev/zero of=~/dropbox.img bs=1M count=4096 mkfs....
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1k views

How to WRITE to ext4 partitions on windows?

I've tried many of the answers found here. Even the ones that supposedly could write to the SD card, won't work. When I eject the card and put it again the file is like it was before the write. So ...
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Lost partition after ubuntu install attempt [duplicate]

I have 500gb HDD with two partitions C and D with the same size (232gb) I have Windows 10 installed on C I wanted to install Ubuntu on D During the installation process I changed the D partition ...
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2answers
657 views

How to fix EXT4-fs error even after a full wipe?

I have an HP Probook 440 G3. I was previously dual-booting Linux Mint Cinnamon 18.3 with no issues for about a year. Then I started getting the "No boot device found" and other errors. After trying ...
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278 views

File system errors on virtual machine: Resize inode not valid. fsck exited with status code 4

TL;DR I'm trying to fix a disk that got corrupted because I hard-shutdown the VM. The farthest I've managed to go is to use fsck.ext4 and a back up superblock to allow me to mount the disk again. ...
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0answers
518 views

The ext4 file system creation in partition of USB drive failed

I’m trying to install Ubuntu 18.04 on a 256GB USB flash memory drive which fails with this error: The ext4 file system creation in partition #2 of /dev/sdc failed. See updates below.
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2answers
475 views

All of a sudden I'm getting permission errors

I'm running Ubuntu 16.04.4 LTS and facing a problem. All of a sudden I'm unable to edit files that I could before, I cannot run programs due to permission errors. I'm always logged in as a user ejaz ...
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0answers
96 views

Recover NTFS partition formatted to Ext4 system and deleted in Dual boot of Ubuntu 16.04 and windows [duplicate]

I have dual boot in my PC with Windows 10 and Ubuntu 16.04. A windows partition of 500 GB NTFS formatted disappeared and now showing in Ubuntu with ext4 format. I was trying to mount that partition ...
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2answers
270 views

If I use EXT4 driver for EXT3 filesystem, will I get better performance? Why? [closed]

In my testing, I can see using EXT4 driver for EXT3 filesystem improve performance but I am not sure why.
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209 views

External USB hard drive ext4 partition mounts as read-only on Ubuntu 14.04.5 LTS, e2fsck recommended

When I plug my 1-terabyte Seagate hard drive in a USB port on my desktop PC, it mounts NTFS filesystem /dev/sdc1 successfully but fails to mount ext filesystem /dev/sdc2 because of an apparent error ...
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1answer
63 views

Can I create a bootable Ubuntu or any Linux USB without having to have fat/fat32/ntfs bootable partition

So I am wondering if I can have an ALL ext4 bootable USB without having to have a windows type partition on it. Probably want to boot without the McAfee encryption program flagging it to begin it.
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1answer
1k views

ubuntu 18.04 “Copy Paste” from ext4 to NTFS not possible

I have installed Ubuntu 18.04 along side win10. While installing Ubuntu 18.04 along side win10, i have only these partitions Recovery EFI MSReserved Partition C Drive Unallocated when i was in ...
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1answer
127 views

Automatic recovery of ext4 filesystem

Last days I was facing problems with power outages/glitches that caused some failures on ext4 filesystem, the fs was then remounted as read-only. Unfortunately, this caused crash of few important ...
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1answer
863 views

tune2fs complaining about “unsupported read-only feature(s)” on fresh ext4 filesystem

I did a fresh install of Ubuntu 16.04. /dev/md1 contains an ext4 filesystem that is mounted at /: /dev/md1 on / type ext4 (rw,relatime,data=ordered) Now I want to set the automatic filesystem check ...
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0answers
906 views

Apt Update: Problem unlinking the file … (30: Read-only file system)

Tried the solutions provided by several other questions on AskUbuntu, but none of them work as described below. On Ubuntu 16.04.1 LTS, when I run sudo apt update we get the following error. Ign:1 ...
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75 views

Do I have an ext4 partition?

I ran the command file -sL /dev/sda*, and out of nine drives, the first part of the output of the seventh one says /dev/sda7: Linux rev 1.0 ext4 filesystem data. Just to make sure, does this mean I ...
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0answers
191 views

Partition table damaged after windows update

Yesterday I've let windows 10 update but on restart grub was showing "unknown filesystem". After trying all solutions I've found on the web for that issue, I've used Ubuntu Live to fix that and now ...
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1answer
70 views

Unable to repartition with gparted [duplicate]

I now have a 1 TB ext4 partition, but I can't change that with gparted. How can I partition the hard disk into 600GB and 300GB? Should it stay as ext4 or should I change it to NTFS? I have only one ...
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1answer
1k views

filesystem with invalid superblock checksum error on ubuntu 18.04 boot

I recently installed Ubuntu 18.04LTS with windows 10 and after I boot into Windows, Ubuntu boot failed with fsck.ext4: Superblock checksum does not match superblock while trying to open /dev/sda8 and ...
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0answers
387 views

Ubuntu Server 18.04 EXT4-fs error

So about a couple of weeks ago, I decided I wanted to make a server computer (on my laptop) and well run servers on it. I thought best option would be to pick Ubuntu Server. When I went to the website ...
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0answers
71 views

Music filenames invalid on android transfer

G'day all, I tried to copy all the files from my Music folder on 18.04 to my android phones SD card via a simple file transfer over USB. There were lots of 'Unable to send object info' errors so I ...