Questions tagged [bad-blocks]

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51 views

How to recover soft bad sectors

How to get rid of soft bad sectors obtained from cloning a faulty disc? I have a EFI HDD with some bad sectors from a DELL computer. It's been causing headache for quite some time. So want to replace ...
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0answers
34 views

Drive End-to-End_Error FAILING_NOW, yet passes badblocks and smartctl

I've skimmed through similar questions and I only found one with the same error, however it did not answer all my questions. I’m trying to increase my Linux skills and I decided to use an old lenovo ...
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0answers
117 views

Strange HDDSCAN results, consecutive bad blocks

I'm doing VR-Verify; All bads are consecutive, starting at around ~20-22%, and the percentage hasn't moved for the whole duration of bad blocks. HDD was quite slow lately, especially on boot, could ...
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1answer
124 views

How likely is the last block of a drive to be a bad sector?

This is a follow-up question to this one, where zeroing the disk with dd would give me an error towards the very end of the drive. I then set about trying to determine whether this was a bad sector, ...
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1answer
328 views

badblocks is taking ages - what am I doing wrong?

I have a 8TB Seagate Archive drive which has a few bad sectors. I can't afford to replace it yet, though. I'm trying to "fix it" with badblocks for the time being, but it's taking ages: # badblocks -...
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2answers
369 views

How to scan boot/system drive for bad sectors on Ubuntu machine?

My workstation, an Ubuntu v14.04 (Trusty) machine, has two system boot options. I can run Windows (for protools and music recording), but more often I boot up into Ubuntu for software development work....
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1answer
103 views

How to emulate disk partition bad blocks in a test file?

I would like to test some disk rescue methods before applying them in real life, in particular the ability for ddrescue to restore bad blocks from several disk copies, assuming one bad block is not ...
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1answer
2k views

How many bad blocks in a HDD is too many?

I am at my second attempt to get a brand new undamaged HDD (the first attempt yielded a question already) but I am starting to lose hope. The new drive I got is S.M.A.R.T. healthy but has a lot of bad ...
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0answers
25 views

Strange data corruption on HDD after switching from Windows to Linux

After I have replaced Windows 10 (the laptop has been in use for some time witout any issues) with Kubuntu Cosmic (ext4 over lvm, kernel 4.18.0-16-generic) on a laptop, I have started experiencing a ...
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1answer
285 views

How does mkfs -c works

I have faulty 3 Tb drive. There's a lot of bad blocks, but it's still has about 2.6 Tb usable space and I'd like to utilize it for trash storage (music, videos, etc.) At first I came across some guy's ...
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1answer
175 views

HDD SMART test shows read error; should I toss the disk or scan for bad blocks?

After triggering SMART test (long) using smartctl, I have the following smartctl -a output: smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-142-generic] (local build) Copyright (C) 2002-16, Bruce ...
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1answer
302 views

How can I attempt to read bad sectors from the end of the disk, using ddrescue?

How can I attempt to read bad sectors from the end of the disk, using ddrescue? I have dynamic volumes and the LDR is kept at the end of the disk, unlike MBR. I remember that I've tried --reverse but ...
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1answer
370 views

How to add a sector to the list of badblocks for ext4?

dumpe2fs -b /dev/sdd1 can dump blocks that are known to be bad by ext4. How do I manually add a block to that list without redoing mkfs ?
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2answers
931 views

Checking a new disk for bad blocks on Linux, does read-only make sense?

When I issue the following command sudo badblocks -vs -b 4096 -o badsectors2.txt /dev/sdc1 I get as a response Checking blocks 0 to 1152784944 Checking for bad blocks (read-only test): 72.37% done,...
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2answers
301 views

Detecting bad blocks/ sectors on modern (spinning) drives and script to monitor SMART info

I'm currently scanning a number of old drives to detect errors. If you google detecting bad sectors on a mechanical spinning disk (rather than ssd) you'll usually come across: windows chkdsk/r ...
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1answer
572 views

How to interpret S.M.A.R.T and Badblocks results

I have bought a used SSHD ( Seagate Laptop SSHD - ST500LM000-1EJ162 ) on ebay. Regarding to S.M.A.R.T the disk might be damaged somehow, I am not sure. To correctly interpret the S.M.A.R.T values, I ...
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1answer
750 views

I can't change SATA hard disk (working in UDMA) to PIO mode in Linux

I'm trying to disable DMA in my SATA 3.5" hard disk drive to work in PIO mode because for recovering some bad sectors from a failing disk with GNU ddrescue I am using PartedMagic Linux live CD and I ...
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1answer
666 views

ZFS scrub finds checksum errors, but badblocks and smartctl do not

I have configured a ZFS pool with two drives as a mirror. The operating system is Ubuntu 16.04 and I have been using the zfs 0.6.5 as packaged by the vendor. The drives are 3T WD Green and 3T WD Red (...
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2answers
456 views

Badblocks reports “weird value (4294967295) in do_write” when writing patterns

This is the second time that I'm receiving this error running badblocks, approximately 2 years apart from the last time, and the vast majority of factors from hardware (cables, etc.) to software (the ...
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1answer
765 views

How to start badblocks at a specified portion of the drive

While trying to dd the last few blocks of a 200GB Maxtor IDE hard drive, I run into the following error: $ dd if=/dev/zero of=/dev/sdc bs=4M status=progress 203901894656 bytes (204 GB, 190 GiB) ...
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1answer
277 views

partclone via clonezilla - where are the bad blocks logged?

I've just backed up a partition using clonezilla, which in turn employed partclone. During the backup, several blocks were bad and were skipped (it was in rescue mode). Is there a log of these?
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1answer
8k views

How to test SSDs or NVMe for badblocks'?

With the traditional spinning disks diagnostics is rather easy. If you suspect a drive to be faulty, you can check the SMART values, run a SMART extended test and a badblocks -wsv test. If all three ...
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16answers
25k views

How can I intentionally break/corrupt a sector on an SD card?

I need to test the resilience of some read/write code for some embedded hardware. How might I sacrifice a few SD cards and break several known sectors for a controlled study? The only thing I can ...
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2answers
3k views

ext4 filesystem still has errors after fsck

Suddenly my ext4 file system fell down into read-only mode. I've unmounted this disk and tried to repair it, but without any success. fsck tries to fix something but ends with FILE SYSTEM WAS ...
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2answers
530 views

How to know if bad block is logical or physical?

I cannot read some files from external disk (NTFS system). Windows cannot read from this disk now. I am just scanning the disk using badblocks (Linux). The program prints a lot of bad blocks. I ...
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1answer
987 views

Badblocks and fsck say HDD is clean but Linux marks it as read-only

I'm relatively new to Linux so I'm not sure why this is happening. I have this one drive that Linux always marks it as read-only partition. At first I thought it was just the OS so I did a clean ...
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1answer
615 views

What is AdBlock blocking on my website?

While reading my webpage I noticed that AdBlock was blocking one element. I certainly don't have any ads. Here's the entire source: <!DOCTYPE html> <html> <head> <title>...
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0answers
1k views

mkfs.ext4 and mkfs.vfat with same badblock file give me different space

I have a 256GB pendrive with bad sectors, and I get them with this command: sudo badblocks -wsvf -o 256GB.txt /dev/sdc But when I use this file (256GB.txt) to format the pendrive I get different ...
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2answers
200 views

SMART: Is my HDD about to get bad sectors and corrupted data?

I am running gsmartcontrol in Linux. I ran an extended SMART test. The Health Self-Assessment test returned a value of 'PASSED'. However I am concerned about the possibility of any bad sectors and ...
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1answer
2k views

How do you securely erase remapped bad sectors on HDD in Linux?

I have run badblocks on my HDD in Linux. No badblocks were found. However some bad sectors may have been previously detected and remapped; if this is the case, the badblocks test would not have found ...
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1answer
357 views

How long would badblocks take on a 40GB disk? How do I optimize the whole procedure?

I am running badblocks on a 40GB partition checking for errors.It hasn't responded for hours now! Went through some answers related to this and someone suggested to increase the -c parameter's value ...
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1answer
3k views

How do Zero-Fill, Full Format, and CHKDSK fix bad sectors?

I use HD Tune pro error scan to find problems with mechanical hard drives. However, I am confused as to weather these are fixable problems or not. Please clarify weather my statements are accurate: ...
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1answer
206 views

Writing to bad sector makes every other operation fail afterwards

My hard drive has a few bad blocks, so I'm trying to get a list of them all in order to bypass them when creating a new ext4 filesystem, like this: badblocks -wsv -o badblocks_sdf.txt /dev/sdf As ...
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1answer
194 views

Can data patterns on HDD cause corruption?

I am really baffled that one of my movie files doesn't seem to like Samsung HDDs and I was wondering if certain data patterns can cause or at least favor data corruption over time. It first started ...
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1answer
3k views

Is there a good way to scan a drive for bad blocks in the background?

I just got a QNAP TS-251, an NAS that runs Linux plus the manufacturer's tools. One of the setup options is to run a bad block scan, but on a pair of 4 TB drives that might take a really long time to ...
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1answer
78 views

Retrieve data from a mountable partition refusing `cp` but allowing `dd`

Recently, my internal drive failed after a manual reboot and I would like to retrieve the data before changing it. My computer is a Macbook Pro mid-2012 and the drive is formatted as HFS+. (From my ...
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0answers
43 views

New external USB HDD cannot copy big files and develops bad blocks

I had an issue with external HDD not being able copy out big files but thought it was due to the bad blocks that they had (here is that question). But now I have brand new 5Tb that I am trying to use ...
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0answers
1k views

Input/output error when reading disk

I did a forced shutdown after my computer froze (on Ubuntu). After turning back on I found a "attempt to read or write outside of disk hd0" error, after choosing Ubuntu on GRUB. I haven then booted ...
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1answer
64 views

Is it a hardware failure to have badblocks on HDD

My PC was running slow , I thought that there may be some problem with the hard disk , so I ran badblocks and the process was running for the last 263 hours before I accidentally interrupted it. It ...
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2answers
720 views

Does it worth to reinstall Windows 7 in the same partition after bad sectors found by CHKDSK in it?

I've executed CHKDSK with both "Automatically fix filesystem errors" and "Scan for and attempt recovery bad sectors" options selected on a system partition of a clean Windows 7 installation. Wininit ...
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2answers
314 views

Does having some Bad Sectors indicate that the drive will crash soon?

I have a Hitachi HTS723232L9SA62 320Gb 7200RPM HDD. I checked the SMART status and there are 3 bad sectors, totaling 1.5MB. This means that approximately 0.00046875% of my hard drive has gone bad. Is ...
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1answer
295 views

Usefulness of badblock on modern storage media

If I understand it correctly, badblocks just writes somewhat elaborate patterns to the supplied block device and reads it back. With modern hard drives doing extensive caching, sometimes have included ...
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2answers
1k views

Is there any option to quickly scan an entire hard drive for bad blocks?

I have a 1 TB HDD so I want to test for bad sectors or bad blocks but badblocks takes a LOT of time in Linux (barely 4.66% done in 6 hours 3 minutes). In Windows however chkdsk scans in a few seconds ...
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3answers
32k views

Rufus says my USB drive has bad blocks, how do I fix it?

My USB drive have 256 bad blocks according to Rufus, and yes it does contain bad blocks since it always give corrupted error message when I try it to install Windows, but running chkdsk on this USB ...
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2answers
744 views

What happens to sectors marked as bad when HDD is repartitioned? [duplicate]

If I have an HDD with some bad sectors and I format the disk (from Windows) or re-partition the disk, will bad sectors still be marked as bad?
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1answer
496 views

Accumulate all bad blocks and install OS in clean partition [duplicate]

My WINDOWS7 been crashing a lot, with other problems like: Running system hangs Drives (partitions) disappear and come back on restart System restarts without showing any error Going through ...
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1answer
5k views

How to know if bad sectors are caused by physical or logical damage? [closed]

Is it possible to know whether bad sectors are caused by physical damage or logical damage on a hard drive?
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2answers
3k views

Can BSOD cause bad sectors on a hard drive?

What I mentioned as "bad sectors" here are quoted from following scan/test: result from CHKDSK, referred as "Bad Sectors" on the report screen. result from HD Tune - Error Scan, referred as "...
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1answer
128 views

Best copy process with pending sectors?

I'm a bit confused due to this thread: Any way to recover a file with bad blocks (CRC error in Windows)? I recently decided on a Synology DS1815+ with four WD4000FYYZ HDDs (SHR2, which is Synology’s ...
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1answer
18k views

Thousands of bad clusters discovered by chkdsk on external HDD

2 days ago, during download, uTorrent started to throw CRC error (write), i resumed failing download multiple times with no luck(same error appeared again and again just in few seconds/minutes), then ...