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

learn more… | top users | synonyms

3
votes
2answers
7k views

Filesystem config for 4k sector drive that reports 512 byte sectors [duplicate]

Possible Duplicate: Western Digital Green drive from 512 byte sectors (jumpered) to 4k byte sectors (removal of jumper) I have just purchased two Western Digital WD20EARS disks and ...
2
votes
2answers
1k views

Mount ext4 partition with >4KiB block size

I'm attempting to mount a partition from a NAS and the block size is 65536 bytes, this is above my distribution's precompiled kernel memory paging size of 4KiB, so I cannot mount it normally. Which ...
7
votes
3answers
24k views

Online, “Smart” Partition Manager with Full Ext4 Support?

Is there any partition manager for Windows that can manage (resize, move, etc.) ext4 partitions? Caveats: Resize must be smart when resizing from the beginning of the partition. Many partition ...
-1
votes
1answer
195 views

Disk formatting issue on Linux [duplicate]

Possible Duplicate: Free Data recovery tool for linux? my dad formatted a 204GB disk and it's now showing as "Unknown" 199GB partition with 4.7GB extended partition and 4.7GB swap space ...
3
votes
3answers
715 views

Recover ext4 filenames

I have a corrupted ext4 file system that had ~7 TiB of data on it. Using photorec, I was able to recover usable data, but all the filenames are gone. Is there a tool that would let me recover the ...
4
votes
1answer
665 views

script to convert ext4 filenames to ntfs

ext4 allows certain chars in filenames which ntfs doesn't. Is there a script to replace those chars in filenames?
1
vote
1answer
738 views

Recovering files from a failed ext4 partition resize

I didn't know a resize operation on a 750 GB disk was going to take 40+ hours, and I was biting my nails the whole time, until the power went out when "only" 8 hours where left... I can still mount ...
0
votes
1answer
909 views

Is fsck for ext4 available for 64-bit systems?

First, I'd like to thank James T & ct64116 for their help on my first question; I accidentally overwrote an ext4 partition with the Windows 7 installer and lost something like 300Gb of files. I ...
1
vote
1answer
5k views

Multiple partitions for an external USB hard drive used by Linux and Windows

I want to split a large external USB hard drive into at least 2 partitions. I've heard that multiple partitions on a USB drive involves problems not associated with partitioning a regular IDE/SATA ...
2
votes
2answers
2k views

are there any drawback for using NTFS for linux?

I use linux for work (perform c++ calculations, latex) and I use windows for entertainment (dj software, tablet functionality). I'd like to access (read and write) to my linux partition from windows. ...
1
vote
1answer
307 views

Identical hard drives with different sizes (formatting)

I have two hard drives, which are identical, same model though purchased at different times, but in all respects the same. Afaik the manufacturer hasn't changed capacity (Seagate expansion). However, ...
4
votes
1answer
807 views

What filesystem should I use for a large amount of disk space in Linux (>32TB)?

I am trying to make a large file system in linux, but have run into problems with many of the common file systems. JFS has a bug that does not allow expansion over 32TB. XFS has a bug in the fsck ...
1
vote
1answer
919 views

Encryption, loop device and journaling file system on Linux

I've been reading up on tools like Truecrypt, loop-AES and Cryptoloop that use a "loop device" to create an encrypted disk volume within a file. On the README page for loop-AES, it has this paragraph ...
7
votes
2answers
4k views

View bad blocks on mounted ext2/ext3/ext4 filesystem

I've ran fsck -c on the (unmounted) partition in question a while ago. The process was unattended and results were not stored anywhere (except the bad block inode). Now I'd like to get bad block ...
9
votes
2answers
8k views

Why is an Ext4 disk check so much faster than NTFS?

I had a situation today where I restarted my computer and it said I needed to check the disk for consistancy. About 10 minutes later (at "1%" complete), I gave up and decided to let it run when I go ...
0
votes
2answers
3k views

Ubuntu doesn't start, how to repair its ext4 system-partition?

My netbook crashed while booting Ubuntu (I accidently removed a usb stick while booting) and now doesnt start anymore. It gives the following error and goes into an ash (BusyBox built-in) shell: ...
1
vote
3answers
3k views

Is there any way to restore EXT4 partition

Is there any way to restore ext4 partition after formatting the entire hard disk then making two partitions of NTFS
4
votes
4answers
9k views

Is there a way to mount an EXT4 volume image in Windows 7?

Made with ddrescue. I'm guessing not.
1
vote
2answers
7k views

mounting ext4 fs with block size of 65536

I am doing some benchmarking on EXT4 performance on Compact Flash media. I have created an ext4 fs with block size of 65536. however I can not mount it on ubuntu-10.10-netbook-i386. (it is already ...
1
vote
1answer
180 views

Questions about solid state drives?

How to tell if a hard drive is solid state drive? For example: For one laptop, its hard drive is 244GB Western Digital WDC WD2500BEVS-08VAT2 (SATA) For another, its hard drive is 98GB ...
9
votes
5answers
2k views

Windows with a better filesystem

From my observations as a Java developer working on Windows workstations, NTFS is slow compared to Linux filesystems. Question is, is there anything in the NTFS driver that can be manually tuned, for ...
1
vote
2answers
1k views

Why might Gparted be failing to format partition on Dell D600 Latitude laptop?

I have installed a dozen dual boot XP / Ubuntu boxes, however this one has me stumped. After the installation failed in the partitioning phase I tried manually partitioning using a Gparted LiveCD. I ...
7
votes
2answers
222 views

Which ext4 features are missing on an upgraded filesystem?

Which ext4 features will be missing on a filesystem upgraded from ext3 to ext4 using the instructions here? The text explains: There are additional ext4 features, such as flex_bg and > 16TB ...
0
votes
1answer
1k views

how do i recover files and directory structure of an NTFS volume that was formatted as ext4? [duplicate]

Possible Duplicate: Free NTFS partition recovery last night (at an hour i should have been asleep) i installed ubuntu 10.10 0 onto a disk partition that had many files. the partition was ...
2
votes
2answers
1k views

Upgrade root (also boot) filesystem from ext3 to ext4 on Debian

After upgrading a Debian system from 5.0 to 6.0 (Lenny to Sqeeze), how do I go about upgrading the root filesystem (which in this case is also boot) from ext3 to ext4?
3
votes
2answers
398 views

Invalid size displayed for SSD

I have an 80GB Intel X25-M SSD drive installed on a Linux box running Debian 5.0. The file system on the SSD is ext4. I've had no problems with the drive, and have been using it for quite some time ...
3
votes
3answers
4k views

How to access the ext4 file system on Windows

How to access the ext4 file system on Windows XP ? I've tried the ex2explorer but I can't copy the files.
2
votes
3answers
2k views

Linux driver keep saying 0 bytes free, and only root can write

I have a very very insane problem with my ssd sata harddisk. I did fill the harddisk, and Thunderbird complained about "no space left on device". But even if I delete some files from the harddisk, ...
0
votes
0answers
588 views

My ext4 partition became unreadable

When I boot up my PC (duel boot with Vista, which works fine) and go to ubuntu in the grub menu I get an almost immediate kernel oops. Errors include (from memory) /dev, /proc & /sys doesn't ...
4
votes
2answers
6k views

MacFUSE + ext4fuse = No luck

So I'm trying to mount my ext4 (with extents) partition on Mac OS X using MacFUSE (from MacPorts) and ext4fuse (compiled from git), but I just can't manage to do it. I'm trying to do it like this: ...
1
vote
2answers
118 views

Is it possible to restore a backup on different filesystems?

I'm now using Ubuntu 10.04 with ext4 and for the second time in my life I experienced data loss (not for real: I got backups) and I'm assuming problems with the recent ext4 fs. I want to restore all ...
2
votes
2answers
11k views

How long does it usually take to format a 2TB external HD using ext4 and gparted?

How long does it usually take to format a 2TB external HD using ext4 and gparted?
1
vote
2answers
1k views

Why don't I have TRIM on Ubuntu 10.04 + ext4 + Samsung SSD UM41 + Latitude 13?

I'm running Ubuntu 10.04 and lshw shows a "SAMSUNG SSD UM41". Thanks to SU, I determined previously that my system isn't using TRIM. Summary: my BIOS SATA settings should say AHCI (check) kernel ...
0
votes
2answers
434 views

Windows Viruses Infected ext4 drive

I have a drive thats formatted as ext4 and being used by my linux install. It recently got infected by some viruses and clamav is just pathetic as it asks to delete each file, something which i would ...
2
votes
1answer
2k views

how can fsck to recover from hardware failure?

I have a RAID 5 array using mdadm and ext4 as its filesystem. We got a strong power surge and one of the drive faulted, while another one got a bit flakky, aka "click of death". I replaced the disks ...
20
votes
6answers
69k views

Modify fstab entry so all users can Read and Write to an EXT4 Volume

I have an Ubuntu 10.04 box with an EXT4 partition. This partition is set to automatically mount in /etc/fstab. For the purposes of this post, we'll call it: /media/foo. Unfortunately, only root ...
7
votes
3answers
14k views

How can I recover/undelete files from an ext4 partition?

Has anyone had success recovering deleted files from an ext4 partition? I've tried various utilities, but none have worked yet. I'd be grateful if someone can share a success story!
3
votes
2answers
2k views

How do I access files inside a Wubi virtual ext4 Ubuntu partition from within Windows?

I just installed Ubuntu 10.04 using Wubi on a PC that has Windows XP and Windows 7 installed. I was working in it for a while and everything is just fine. However, when I booted back into Windows 7, ...
2
votes
1answer
539 views

Determine which sectors of a hard disk a given file occupies?

Is there a way I can see which sectors of the hard disk a given file occupies? The filesystem is ext3 or ext4 on Linux.
3
votes
2answers
2k views

Finding out the time a filesystem was last mounted

I want to find out the last time a filesystem was mounted on Linux (Debian). Any help?
1
vote
2answers
2k views

How can I recover my ext4 ubuntu partition from my windows parition?

I dual boot windows and ubuntu 10.04. I accidentally did an rm -r * in my home directory and deleted a bunch of files and folders that I need to recover. How can I recover these files from my windows ...
0
votes
2answers
3k views

Will these instructions work when turning of journaling on an ext4 SSD?

I have an Acer Aspire One with an SSD for storage. I recently installed Ubuntu on it and chose ext4 for my filesystem. Then I read that journaling on an SSD isn't the best idea, so I will try to ...
2
votes
1answer
1k views

Ubuntu dpkg error , after crash and filesystem error recovery

Ubuntu recently crashed , causing it's partition damaged ( which is EXT4) and Ubuntu was unable to boot , because it couldn't mount anything , only displays Busybox So I used the Live CD to run fsck ...
2
votes
2answers
2k views

How can I access files from an Ext4 partition from a Windows Vista partition on dual-boot setup? [duplicate]

Possible Duplicate: Does a ext4 reader for Windows exist? I have a dual-boot setup: Windows Vista + Fedora Linux. Most of my stuff are in the Fedora Linux installation. I want to be able to ...
1
vote
1answer
1k views

Free space not reclaimed after online resizing ext4 in Ubuntu 9.10

My root partition was filling up, with only 500 mbs left, I wanted to resize my root partition from 20 Gb to 40Gb So I resized my partition by using these steps: Using Gparted to resize another ...
1
vote
0answers
324 views

Filesystem to quickly get recent modifications

I've got relatively big filesystem (ext4) with lots of small files and I'd like to backup it. Making full backups often is not feasible to me so I want to have a way to make differential/incremental ...
1
vote
4answers
468 views

ext4: directory takes 250GB instead of 20GB ?

i have gentoo linux x64 kernel 2.6.32-gentoo-r1 using ext4 i have a 260GB drive and it seems that 99% is taken. (ufk is my home directory) du -hl --max-depth=1 ufk the output shows alot of ...
0
votes
2answers
1k views

XFS and loss of data when power goes down

Each time electricity goes down, my desktop (without UPS) loses some temporary information. Opera can lose settings, history, cache, or mail accounts (Thanks heavens I was wise to use IMAP). ...
2
votes
2answers
3k views

Linux: mount options to improve performance on slow HDDs?

I encounter a performance problem with two HDDs. One is fast but mounted remotely through NFS, the other is local (ext4) but slow. No, exchanging the two drives is not an option, because it would ...
16
votes
5answers
9k views

Major practical differences between ext3 and ext4 - if any?

Assuming there's no need to worry about compatibility with older systems, I expect it's always better to use the latest stabile linux file system, which currently seems to be ext4. However it seems ...