Questions tagged [badblocks]
Corrupted blocks on a filesystem. Blocks are a unit of division on a filesystem.
117
questions
3
votes
1
answer
37
views
I/O errors, but after running badblocks everything works again : how is that possible?
TLDR;
HDD seemed damaged. Unable to format partition (mkfs.ext4 I/O errors), even with a newly created GPT table. SMART test shows some errors. I was about to throw the disk away. Before that, out of ...
- 1,351
1
vote
1
answer
27
views
SSD: `badblocks` / `e2fsck -c` vs reallocated/remapped sectors
The badblocks utility allows one to find bad blocks on a device, and e2fsck -c allows one to add such bad blocks to the bad block inode so that they will not be used for actual data. But for SSD, it ...
- 12k
0
votes
0
answers
154
views
How to resolve dd error reading?
I have dd error reading
# sudo dd if=/dev/sda1 of=backup.img bs=4M status=progress
16478679040 bytes (16 GB, 15 GiB) copied, 154 s, 107 MB/s
dd: error reading '/dev/sda1': Input/output error
3928+1 ...
- 3,195
0
votes
0
answers
24
views
capacity of filesystem with bad blocks
this is the number of bad blocks:
sudo dumpe2fs -b /dev/sda
dumpe2fs 1.46.5 (30-Dec-2021)
113223162
this is the number of total blocks:
sudo tune2fs -l /dev/sda | grep -i 'block count'
Block count: ...
- 211
1
vote
0
answers
86
views
badblocks stuck in a loop?
I'm using a program called badblocks to scan disks for errors, and I'm finding that it sometimes appear to get stuck in a loop. I'm using in read/write mode and by default it tests four patterns. Here'...
- 51
0
votes
1
answer
402
views
New HDD: Number of Mechanical Start Failures: 6
I have bought a new HDD. Toshiba P300 2TB; HDWD120UZSVA
Data sheet: https://www.toshiba-storage.com/products/toshiba-internal-hard-drives-p300/
To be sure, that this drive is in good health and will ...
- 123
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" ...
user546958
1
vote
0
answers
147
views
ZFS On Linux - recover lacked MBR after physical problem
We had a physical problem in our backup server (we suppose an electrical shock due to the thunderstorm). The system is Linux Debian on a disk and the storage in on a two 4 TB disks RAID-1 ZFS (ZFS On ...
- 135
5
votes
3
answers
2k
views
Really Remapping Bad Blocks on disk
I have a SATA drive which has a total of 8 bad blocks identified by the badblocks program. Supposedly the drive firmware should be able to remap them and substitute spares. I've run badblocks in -n ...
- 81
2
votes
0
answers
575
views
How do I determine what files are affected by bad blocks on a disk that uses LUKS and XFS?
Here is my setup: no partition, just LUKS1 and then XFS inside that.
To confirm, the disk was set up like so: disk is installed, luksFormat, luksOpen, mkfs.xfs, mount, start using.
First of all, what ...
- 43
1
vote
3
answers
997
views
Manually telling EXT4 about bad sectors?
The drive is currently in NTFS. After running chkdsk for hours, I have found the locations of bad sectors (below). I want to reformat the disk in EXT4. I have heard that EXT4 has some sort of metadata ...
- 1,207
0
votes
0
answers
248
views
how to locate the root cause of a corrupted ext3 filesystem
I have a 4G Compact Flash card with a 2.5G ext3 partition. The file system has become corrupted. I am not necessarily interested in fixing the file system as identifying exactly what is corrupted in ...
0
votes
1
answer
257
views
Does `badblocks` scan for software or hardware failures?
From the manpage:
badblocks - search a device for bad blocks
but as I try to isolate between software and hardware, I might need a bit more context.
Does badblocks scan for software (filesystem) or ...
- 4,206
4
votes
1
answer
816
views
Speeding up `badblocks` by tweaking its `-c` switch
I have just tried upon tweaking the badblocks utility to use more RAM and possibly achieve a bit higher performance.
The exact command I am running is (without HDD's S/N):
badblocks -v -b 4096 -c ...
- 27.8k
0
votes
1
answer
2k
views
What does command do: `badblocks -svn /dev/sda`? does it just report the bad blocks?
This command:
badblocks -svn /dev/sda
What does it do? Does it just report the bad blocks? Or does it somehow handle the bad blocks so that I don't need to be worried about them?
I read the manual by ...
- 1,529
0
votes
1
answer
151
views
Query detected badblocks from NTFS
When creating an ntfs partition with mkfs.ntfs, it does zeroing and badblocks scanning by default. But unlike e2fsck -fccky it does not output how many badblocks it actually found.
I would like to get ...
- 501
2
votes
1
answer
355
views
hard drive read throughput terrible after running badblocks, recoverable?
I have a collection of new drives, a friend recommended I run badblocks on the new drives before using them. I ran badblocks on some of the new drives before imaging them badblocks -v -s -w -b 4096 -...
- 4,332
0
votes
1
answer
1k
views
What is my hard drive physical sector size? fdisk, smartctl etc.. give different answers
The harddrive is connected with an external enclosure via USB3.0.
$ sudo smartctl -a /dev/sdb
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 3.5
Device Model: ...
- 347
0
votes
2
answers
557
views
Deleted files reappear after shutdown
I currently have a problem with the disk on which is mounted my partition.
From a recovery partition the df command tells me that the memory of the main partition is 100% occupied and indeed there are ...
- 1
1
vote
1
answer
374
views
badblocks and mkfs.ext4
I've ran badblocks on a disk /dev/sdc and now I want to use the saved file with badblocks as an argument to mkfs.ext4 -l on a partition.
Block size used in both commands are the same. But I'm ...
2
votes
1
answer
304
views
How to attest that my USB hard disk is really defective or not?
A few years ago, I bought a 500GB Essentiel B external USB hard drive from Boulanger (a multimedia store in France). Since then I have had 2 failures of the order of 1x / 2 years which seem to lose ...
- 135
0
votes
1
answer
125
views
Avoid damaged block in ext4
I am running
$ uname -a
Linux myhostname 4.14.15-041415-generic #201801231530 SMP Tue Jan 23 20:33:21 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ...
- 4,821
0
votes
2
answers
2k
views
Ignore bad sector on ext4 file system without formatting?
UDisk shows the assessment on my disk
Disk is OK, 19 bad sectors (24° C / 75° F)
This number has remained unchanged for one years long, so I guess my disk is not going to fail, but bad sectors cause ...
1
vote
1
answer
540
views
Can I recover a 500GB Seagate Momentus with bad sectors?
I've received a Seagate 2.5" 5400rpm 500gb HDD that was throwing up a Boot configuration error post some windows updates. I've tried the following on it and nothing seems to work:
First step: I ...
- 105
4
votes
0
answers
2k
views
How ZFS deals with bad sectors?
I have a disk with a couple of bad sectors. I've used badblocks to check which sectors were faulty. dd could not write zeroes to them and smartctl -t long /dev/sdx has failed.
I know that you can ...
- 413
0
votes
1
answer
198
views
How can we check bad blocks in a certain directory
What utility, and how its uses, to check if there's bad blocks in a specific directory
user430174
0
votes
1
answer
164
views
isolate and rule out some defect blocks
How to isolate and rule out some defect blocks or sector of HDD to keep it functional as well as if it has no defect ?
user430174
0
votes
1
answer
116
views
is my thumbdrive dead?
I got a 16GB Sandisk thumbdrive which was "locked" recently while transfering data, and now I can't do anything to the drive, only able to read the remain data. below here are some attempt ...
- 144
0
votes
1
answer
273
views
If dd zero does not "format" my disk what should i do?
I got a softbricked/hardbricked 1TB WD Passport HDD which happened when transfering a suspected 11GB PS3 game file from my mac.As for repairing, My mac cannot do anything with the HDD, so I'm trying ...
- 144
0
votes
1
answer
141
views
Recover large file which contains a few bad blocks
I have an SSD with LVM with one LV dedicated to a Win7 VM .vdi file of 80Gb.
The underlying fs is ext4.
After installing a new SSD and setting up the new LV's in migrating, the copy from the old SSD ...
- 4,673
2
votes
1
answer
2k
views
Repairing Bad Blocks on Linux RAID5 Array - Used Drives
TL;DR: Are the second-hand drive that I've purchased, safe to use for a copy of my backup NAS?
I bought four Western Digital 3TB Red HDDs second-hand and have put them into a spare microserver that I ...
- 21
2
votes
1
answer
6k
views
How to interpret these smartctl results? Possible solutions?
Do I need to dump my SATA hard disk, based on the following smartctl results?
I was frequently getting filesystem errors during boot time and even fsck failed to repair it last time. Then I used a ...
- 129
0
votes
0
answers
127
views
can't start gnome due to bad blocks
I just updated my Arch distribution. But now when I try to log in nothing happens and the below output gets written to the logs. I assume that GNOME can't be started becuase some files it needs live ...
- 101
9
votes
1
answer
23k
views
How to check entire hard disk for errors and bad sectors
I may be misunderstanding some concepts here, but as far as I know, each disk has a partition table and actual partitions.
I'm looking to test a hard drive for bad sectors and errors, but the tools I ...
- 207
2
votes
1
answer
3k
views
Using dd to detect bad sectors
Before I sell an old HDD I completely read and write the disk to verify that it has no bad sectors.
I always did writing like this:
dd if=/dev/zero of=/dev/sdb bs=100M status=progress
But my ...
- 875
1
vote
0
answers
103
views
Wipe disk with bad sectors [duplicate]
I'm trying to wipe a bad disk using dd with the following command sudo dd if=/dev/zero of=/dev/sda status=progress, but it exits prematurely and outputs the following:
13160186368 bytes (13 GB, 12 ...
- 711
-2
votes
1
answer
193
views
I wanted to fix my hard drive bad sectors but it keep saying I/O error inreturn
So, I was messing up the Windows paging value and accidentally set it to 30Gb and made my PC blue screen. Then I can no longer boot into Windows or GNU/Linux (I have dual boot setup). Luckily I still ...
- 3
0
votes
1
answer
208
views
RAID1 recovery process skipping bad blocks
I have a RAID1 array with one sligtly damaged disk /dev/sdb. I put a fresh hard disk /dev/sda into this array in order to mirror sdb (then I’m gonna replace sdb with a fresh HDD).
# cat /proc/mdstat
...
- 101
1
vote
0
answers
255
views
time estimation for badblocks completion
I recently was trying badblocks and tried- the following thing -
$ sudo badblocks -v -s /dev/sda8
Checking blocks 0 to 1300928511
Checking for bad blocks (read-only test): ^C7.81% done, 12:38 ...
- 12k
2
votes
1
answer
2k
views
dd if=/dev/zero leaves drive contents in-tact? Bad USB stick?
I thought I could nuke all partitions of a drive by using dd if=/dev/zero of=/dev/sdX. In the past this has always worked for me, but in this case it is not working as expected.
#check the partitions
...
- 779
2
votes
1
answer
2k
views
mdadm RAID5 with bad sectors and bad blocks
I have a 4 disk RAID5 setup with mdadm in Ubuntu 16.04.
sdb : good
sdc : 8 bad sectors according to SMART, 8 pending, 4 reported errors
sdd : bad blocks present according to mdadm --examine
sde : ...
- 41
1
vote
1
answer
13k
views
How to fix bad magic number - Superblock on Linux
I'm running a dual boot system with Windows 7 and Puppy Linux Ubuntu based "Bionic" installed on a separate partition of my main drive.
Completely separate from that I have a 1TB Western Digital ...
- 11
0
votes
1
answer
131
views
badblocks fails to spot corrupting disk controller
I have file corruption problem on a HDD (the SDD in the same computer works fine):
for i in {1..10}; do
dd if=/dev/zero of=zeroes_$i.dat bs=512 count=4M
done
md5sum zeroes_*
yields the correct ...
- 119
-1
votes
2
answers
480
views
Allow recovery from interrupted `badblocks -n`
man badblocks says:
-n Use non-destructive read-write mode.
This answer says:
The non-destructive read-write test works by overwriting data, then reading to verify, and then writing the ...
- 28.9k
1
vote
1
answer
542
views
What pattern(s) does non-destructive badblocks -n write?
man badblocks says:
-n Use non-destructive read-write mode. By default only a non-
destructive read-only test is done. This option must not be
combined with the -w option,...
- 28.9k
-1
votes
1
answer
401
views
how to identify bad block or disk problem
we want to identify bad block or disk problem by the following
umount /grid/sdd
badblocks -n -vv /dev/sdd
Checking for bad blocks in non-destructive read-write mode
From block 0 to 20971519
Checking ...
- 12.7k
0
votes
2
answers
816
views
Does gparted make good use of badblocks lists?
Suppose there's a hard drive /dev/sda, and both that:
/dev/sda1 is a single ext4 partition taking up the whole disk, and it's mostly empty of data.
dumpe2fs -b /dev/sda1 outputs the badblocks ...
- 7,063
1
vote
0
answers
712
views
Coping with bad sectors on RAID disk
I have a RAID 1 of 2 hard drives managed with mdadm. Today, one of them failed. I figured out that this is because of bad sectors in /dev/sdb. According to badblocks, these sectors are affected: 1028, ...
- 3,195
0
votes
1
answer
692
views
badblocks: Resource busy while trying to determine device size
I am trying to run bad blocks on macOS High Sierra 10.13.6. I installed bad blocks using macports. I keep encountering errors when attempting to run it and I am not sure how to even get bad blocks ...
- 79
0
votes
0
answers
625
views
External HDD failure due to bad blocks
My external HDD failed, I searched on the internet and found that it may have been caused by bad blocks. I therefore ran sudo badblocks -vs -b 4096 -c 64 /dev/sdb1 > ~/Downloads/badsectors.txt in ...
- 365