Changed NTFS filesystem to ext4 accidentally [Solved]

OK, so due to enter happy finger and lack of sleep, I accidentally changed the filesystem of my windows partitions to ext4 and swap. >.< When I realized what I was doing, I hit the power off button pretty quick.
Is there a way to recover my data by re-writing the partition table or something? I hate to have lost all the work from a momentary lapse of judgment.
ETA: Heh, well, apparently I can mount it with ntfs-3g so I guess I hit the power off fast enough.
Last edited by canuckkat (2009-12-21 01:01:04)

The problem is indeed caused by bad blocks.
But it wasnt that easy to prove that, when ms chkdsk always fails to finish :-)
Ive used "hdd regenerator". I dont what did the program exactly do with the hdd, but after the "regeneration" ms chkdsk was finally able to check the disk and showed a lot a of bad blocks. :-(
So it seems this has nothing to do with arch linux. The timing was just a coincidence..
btw the hdd is a Samsung HD103SJ, 2 months old :S
thx for the responses ;-)

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Data recovery after filesystem change ntfs- ext4

so here's my story:
i wanted to instal arch on a friend's machine and it was a success. BUT i accidentaly used a wrong partition and changed the filesystem from ntfs to ext4.
normally i would use something to recover my data but the filesystem change bothers me.
is it even possible to recover anything from it?
i have heard that test disk would be able to do this task, but there's a probability of damaging other partitions.
what do i do?
any help is appreciated

jakobm wrote:
robug wrote:BUT i accidentaly used a wrong partition and changed the filesystem from ntfs to ext4.
What exactly did you do? As far as I know, there is no way to 'change filesystems'.
Did you run a mkfs.ext4 on said partition?
the partition has beed formated from ntfs to ext4 while instalation. so it has arch on it at the moment

[solved] Hibernate corrupting NTFS-Filesystem

Hey Guys.
I'm running an Dualboot of Arch (x64) and Win7 (32bit) for a long time now, perfectly. sda1 is my ntfs formatted windows partion, sda2 and following arch. I have a little Script that hibernates arch and set grub to boot windows, it looks like this:
#!/bin/bash
echo "Press ENTER to boot Windows"
read -s -n 1
grub-set-default 2
suspend2disk
And it worked perfectly till today. The mistake was to make a new install of windows (the old one was messed up due some software testing), and i decided to use the x64 win7. I don't know if its cause of this. But now the hole hibernating thing is crashing my ntfs filesystem.
Steps to reproduce: umount and format sda1, suspend. Install windows, booted from an arch-cd and setting up my grub again. resumed arch, mount sda1 and copied some install sources to the windows desktop (i have the folder as bookmark in thunar), running the hibernate script and booted windows. I installed a hole bunch of things on windows, and deleted the install sources from desktop. After finishing this (no arch boot meanwhile), i rebooted and bring up my arch again. I opened Thunar and accessed the windows desktop. And surprise, there are the install sources on desktop. It shows the folder like before the hibernate. confused about this, i remounted the partition, but no change. Booting windows again results in an nice filesystem corruption error and a system rescue. So, the question is: Why?
I should say, that today i updated gamin (0.1.10-4 -> 0.1.10-5). Could this be the culprit? maybe just an accident that the reinstall of windows and the update happens the same day.
I will test to umount the ntfs before suspending, maybe it will help. Or maybe just remounting read-only will do the job.
So far, Corubba
Last edited by Corubba (2011-08-24 22:24:37)

After resuming from hibernation, the system is supposed to be in the same state as before the hibernation. You cannot modify a hibernated mounted file system without corrupting it. A mounted filesystem can never be modified by a tool when it is mounted and this is exactly what you do. In principle remounting it read only is not sufficient either.
The hibernation cannot unmount all filesystems before hibernating because that would just mean rebooting the normal way, not hibernating (but it could make sense to unmount the specific filesystem you want to access, for example the Windows one).
In your situation, you have to fully unmount the windows ntfs partition before hibernating your computer and be sure you do not access the linux partition from windows in any way.

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[Solved] Non-root user cannot access mounted ntfs filesystem

Hi -,
i have a dualboot system (arch/xfce + win7) and i use a ntfs partition /dev/sda2 to store files i use with both operating systems. I added the partition to fstab and it gets mounted, but i cannot access it with my non-root user. With root it works fine...
My fstab:
# cat /etc/fstab
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
tmpfs /tmp tmpfs nodev,nosuid 0 0
LABEL=home /home ext4 defaults 0 1
LABEL=root / ext4 defaults 0 1
LABEL=swap swap swap defaults 0 0
/dev/sda2 /media/sda2 ntfs defaults 0 2
Is there any option that allows all users to use the mounted device? Or how is this usually done ...
Last edited by muzzel (2012-05-30 20:39:58)

See: NTFS-3G for important setup information.
My fstab line looks like:
/dev/sdb1 /media/Win_USB ntfs-3g uid=1000,gid=users,fmask=113,dmask=0022 0 0
This sets up some important parameters which the NTFS-3G Wiki Page covers. Basically, "ntfs" is only a basic driver and is built into the kernel. "ntfs-3g" is a much better, and less disk-eating, driver that you should install and use if you need the drive in Linux any more than occasionally. My fstab line makes my user (1000) the owner and the masks lets me write and etc to it. When you install NTFS-3G it is automatically used when you use the mount command to mount NTFS drives. In fstab, as above, you would specify it explicitly.
You can find your own user number by entering "id" at a terminal.

How do I change NTFS settings for my external hard drive in Mac and PC

I recently purchased an external hard drive
SAMSUNG (Model No NM-0802)
when i plug the USB cable it will not display on the desktop of my mac
I operate on MacBook Pro and Mac OS X Lion
On the other hand, It is detected in the Disk Utilities pane and is currently set as NTFS format
how do i reformat it to work both in PC and Mac?
thx in advance

Shootist007 wrote:
I have never had any problems with a drive formatted FAT32 or exFAT on a Win PC when connected to a Mac.
Would you please comment on these two links
<http://krishaamer.com/2011/07/10/exfat-mac-pc-compatible-disk/>
<https://discussions.apple.com/thread/2767345?start=0&tstart=0>
(The second one is referred to in the first item.)
Wouldn't you think a MS OS knows how to format a drive correctly using that format, I do. It is Apple Mac that is not doing it correctly.
Kindly note that the word "correctly" does not appear in my post. I'm not quite sure how the statement,
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Help with a Kernel Panic caused by NTFS filesystem

Hello All,
I need a little help trying to diagnose a reacurring kernel panic.
I originally thought it was being caused by Intego Virus Barrier, but that has been uninstalled for over a week now. On avergage, I get about 2 kernel panics a day. I have not been able to isolate why it panic's when it does. Looking at the Panic logs, I believe the issue to be with the Bootcamp partition, but before I go and reformat the drive, I wanted to check with the community to see if there was anything I can do. I have not launched into Bootcamp in probably over 2 months, but the panics started about 2 weeks ago.
I have performed the Extended Apple Hardware test several times and there seems to be no issue.
The consistant item in all the logs is
Kernel Extensions in backtrace (with dependencies):
com.apple.filesystems.ntfs(3.4)@0x14da000->0x1539fff
Any insight is appreaciated.
Thanks,
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Partial Logs below. I can post the full if its helpfull to see the rest of the loaded extensions / USB devices.
Interval Since Last Panic Report: 165188 sec
Panics Since Last Report:          1
Anonymous UUID:                    CA4C7346-D02F-4914-BD0F-53A8CAB33290
Mon Jun 13 12:44:54 2011
panic(cpu 2 caller 0x2aab59): Kernel trap at 0x014e6827, type 14=page fault, registers:
CR0: 0x80010033, CR2: 0x00000008, CR3: 0x19b1f000, CR4: 0x00000660
EAX: 0x00000000, EBX: 0x7c33b83c, ECX: 0x00000000, EDX: 0x0000000a
CR2: 0x00000008, EBP: 0x7c33b818, ESI: 0x17357b90, EDI: 0x00000000
EFL: 0x00010206, EIP: 0x014e6827, CS: 0x00000008, DS: 0x00000010
Error code: 0x00000000
Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
0x7c33b5c8 : 0x21b510 (0x5d9514 0x7c33b5fc 0x223978 0x0)
0x7c33b618 : 0x2aab59 (0x59aeec 0x14e6827 0xe 0x59b0b6)
0x7c33b6f8 : 0x2a09b8 (0x7c33b710 0x0 0x7c33b818 0x14e6827)
0x7c33b708 : 0x14e6827 (0xe 0x48 0x13c0070 0x10)
0x7c33b818 : 0x2fbce4 (0x7c33b83c 0x650066 0x380031 0x34002d)
0x7c33b868 : 0x2fd63a (0x17357b90 0x7c33ba00 0x1da7c6d4 0x2d031d)
0x7c33b8b8 : 0x2e31cc (0x17357b90 0x7c33ba00 0x1da7c6d4 0x0)
0x7c33bb48 : 0x46ba55 (0x15936f9c 0x0 0x880 0x1da7c6d4)
0x7c33bb88 : 0x2dd78f (0xd648804 0x15936f9c 0x880 0x1da7c6d4)
0x7c33bbd8 : 0x2f37f7 (0x17357b90 0x0 0x880 0x1da7c6d4)
0x7c33bc18 : 0x2e987a (0x17357b90 0x7c33bd00 0x0 0x1)
0x7c33bd88 : 0x2e9c2b (0x1509b2f0 0x1 0x0 0x0)
0x7c33bf48 : 0x2e9cc4 (0x1509b2f0 0x1 0x0 0x0)
0x7c33bf78 : 0x4f6075 (0xdb367e0 0x1da48b88 0x1da7c614 0x0)
0x7c33bfc8 : 0x2a144d (0x1da48b84 0x0 0x10 0x0)
      Kernel Extensions in backtrace (with dependencies):
         com.apple.filesystems.ntfs(3.4)@0x14da000->0x1539fff
BSD process name corresponding to current thread: mds
Mac OS version:
10J869
Kernel version:
Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)
System uptime in nanoseconds: 17665642502382
unloaded kexts:
com.apple.driver.AppleUSBUHCI          4.1.5 (addr 0x143d000, size 0x65536) - last unloaded 269319964535

Hi Hatter,
Thanks for the response. I actually did not intend to post this in the Windows Software Category. I'm not sure how it ended up there as I thought I was in the MacBookPro discussion area.
So, I am running Mac OS 10.6.7 and get these panics. I have neither VirusBarrier or Little Snitch installed.
The kernel extension com.apple.filesystems.ntfs is what I am assuming is the culprit as it is consistantly listed in the backtrace.
I have read both of the mentioned articles. I do not seem to get the Kernel Panics when booted in safe mode, but I assume that is because the com.apple.filesystems.ntfs is not loaded when in safe mode and the Boot Camp partition does not mount (and cannot be).
So if Apple Hardware Test shows the drive as being healthy. The panic also mentions the active thread as mds. So I'm guessing that Spotlight is trying to index the NTFS partition and something in the middle is getting angry and causing the panics. Without re-formatting, is there any way to re-install just the Bootcamp extenisions for Mac OS X?
Or am I off base here?

USB flash drive 5times faster with ntfs filesystem?

Hello,
I have a weird problem with my USB Voyager GT 16GB flash drive. I formated it in ext2/ext3/xfs/fat32 and then start copying a file >1GB in size. The speed of transfer very quickly drops to 2-4MB/s. That is very slow. And if I format it in ntfs it works as it should be 16-17MB/s in linux with ntfs-3g. I really don't get it. I've been playing with all sort of options all day and is driving me nuts Tried even another kernel with BFS and BFQ I/O sheduler kernel26-ck and the problem is identical. Tried turning of legacy support in BIOS for USB and nothing, the problem is still here. Mount it it with "async" option which gave me speed of 800KB/s... Is it possible that Voyager GT 16GB doesn't work good with any other filesystem? Or maybe I'm missing something... Clearly it isn't problem with usb 2.0 ports because all of them are 2.0 and the ntfs speed wouldn't be that good if the flash was working in usb 1.1 mode. Any thought would be much welcome
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Last edited by Clouseau (2010-12-24 02:42:06)

I'm seriously thinkg to toss computer out throught the windows cause this problem is driving me insance. I'm loosing hours every day on constat reformatting of my USB drive. In windows no problem, but in linux, it drives me crazy! Slow! Slow! Slow! Its the same on another computer... The problem must be in schedulers, i've tried them all. I'm now on the latest kernel and it's still driving me nuts...
USB Hard disk have lesser problems than this stick... But in windows everything is fine with the stick...
And also when I copy all system slows down, it becomes unresponsive...
I'm on x64 Arch with KDE4, and my system is up to date. The problem is here for couple of years and I'm thinking really to switch back to windows cause I cannot use my computer for basic things... I mean I do not need it for Adobe Premier Pro, but I would like to transfer couple of mkv files now and then I don't want to loose two hours every time I wan't to do that... Damn, I'm mad
This is my cat /proc/interrupts. The rescheduling interrupts are very high.
CPU0 CPU1 CPU2 CPU3
0: 348 0 0 0 IO-APIC-edge timer
1: 82420 0 0 0 IO-APIC-edge i8042
8: 1 0 0 0 IO-APIC-edge rtc0
9: 0 0 0 0 IO-APIC-fasteoi acpi
12: 4 0 0 0 IO-APIC-edge i8042
16: 768552 0 0 0 IO-APIC-fasteoi mei, ehci_hcd:usb1
17: 171 0 0 0 IO-APIC-fasteoi hda_intel
18: 0 0 0 0 IO-APIC-fasteoi ata_generic
23: 16242602 0 0 0 IO-APIC-fasteoi ehci_hcd:usb2
40: 0 0 0 0 PCI-MSI-edge PCIe PME
41: 0 0 0 0 PCI-MSI-edge PCIe PME
42: 0 0 0 0 PCI-MSI-edge PCIe PME
43: 0 0 0 0 PCI-MSI-edge PCIe PME
44: 0 0 0 0 PCI-MSI-edge PCIe PME
45: 4636694 0 0 0 PCI-MSI-edge ahci
46: 65645608 0 0 0 PCI-MSI-edge eth0
47: 5047842 0 0 0 PCI-MSI-edge hda_intel
48: 6234037 0 0 0 PCI-MSI-edge nvidia
NMI: 10780 7413 3864 2774 Non-maskable interrupts
LOC: 28950146 27310427 27977434 15954004 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 10780 7413 3864 2774 Performance monitoring interrupts
IWI: 0 0 0 0 IRQ work interrupts
RES: 27411973 44067980 37191358 46027973 Rescheduling interrupts
CAL: 236457 357518 433390 486080 Function call interrupts
TLB: 410269 343394 159266 107912 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 303 303 303 303 Machine check polls

Filesystem check failed + accidental /boot deletion

Yesterday I rebooted my PC and suddenly Arch started complaining about "Filesystem check failed", just like stated by the OP in this thread https://bbs.archlinux.org/viewtopic.php … 00#p941200
The problem was with two partitions: /boot and /home. I tried to no avail to manually fsck them using the maintenance console and e2fsck as well as the forcefsck command but it didn't work.
I didn't try any LiveCD back then but since I saw that in that thread the OP solved his problem by deleting some folders located at /media:
Fixed the problem.
The /dev/sda2 and /dev/sda5 were being mounted in the wrong place.
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But what is the command? mkinitcpio -p kernel26 ? Also how do I fix this grub issue? I'm assuming grub created a default menu.lst after I copied the config files and setup the hd0 but I actually don't recall checking that.
Just re-did all steps including rebuilding the kernel, I still can't get the boot menu when I reboot. It goes directly to grub console.
I checked the generated menu.lst, it lists my root as the device where /boot partition is and the kernel line root enrty is defined for the arch system I want to boot :\
Last edited by Grimn (2011-05-31 17:50:02)

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This is a basic question.
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Hi,
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http://social.technet.microsoft.com/Forums/windowsserver/en-US/bc1ee7e7-dcaf-455b-baec-01e6128ddd28/action?threadDisplayName=unable-to-create-filesystem-mkfsext4-on-large-gt-2tb-gpt-virtual-disk-using-linux-vm - which suggests mkfs with the '-K' option.
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-rw-------. 1 root root 25085329408 Apr 19 23:15 messages
Apr 19 17:39:28 nfs2 kernel: sd 4:0:0:0: [sdc] Sense Key : No Sense [current]
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Hi,
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I am trying to involve someone familiar with this topic to further look at this issue.
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Changed NTFS filesystem to ext4 accidentally [Solved]

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