Skip to main content

perform a CHKDSK on an NTFS image?


I have a system with a hard drive that has a few bad sectors. I used ddrescue to recover all available sectors on the drive, but the drive continues to develop new bad sectors so I junked it. Two runs by the manufacturer tool indicated DIFFERENT blocks of bad sectors, and two passes with SpinRite both resulted in DIFFERENT unreadable sectors, so the drive is no longer reliable.


The partition was on a 500GB drive, but only about 40GB of the partition is used, so I was going to replace the drive with a smaller drive (a 120GB) for now.


All I have now is an image produced by ddrescue of the NTFS partition (e.g. /dev/sda1). This file is on my NAS and is a full 500GB in size.


My dilemma is that all of the NTFS tools will not operate on the drive at all because there are a couple of inconsistencies due to the unrecovered sectors. Only about six sectors were eventually unrecoverable (only 3K!) but these are still throwing the NTFS filesystem into a fit. Therefore, I can't resize the partition, use ntfsclone, or anything. I can run the tools on the image file, but they all instruct me to CHKDSK the partition in Windows which I can't do since it's just a raw image sitting on my NAS.


The problem is I don't currently have a spare 500GB drive to copy the image to in order to do this. Since the file is 500GB, I can't clone it to a smaller drive and of course I can't use ntfsresize.


So what I'm trying to figure out is if there's a way I can run chkdsk on the image file. I do have VMWare and VirtualBox however there's two problems: one, the image file is JUST the NTFS partition, not including the partition table etc. Plus, it's a raw image, not in the format needed by either of these virtualization tools.


Any advice on how to get the image repaired so I can then use the NTFS tools on it?



Answer



If you have access to a Windows system that can attach the image, ImDisk may let you mount the raw image.


Comments

Post a Comment

Popular Posts

How do I transmit a single hexadecimal value serial data in PuTTY using an Alt code?

I am trying to sent a specific hexadecimal value across a serial COM port using PuTTY. Specifically, I want to send the hex codes 9C, B6, FC, and 8B. I have looked up the Alt codes for these and they are 156, 182, 252, and 139 respectively. However, whenever I input the Alt codes, a preceding hex value of C2 is sent before 9C, B6, and 8B so the values that are sent are C2 9C, C2 B6, and C2 8B. The value for FC is changed to C3 FC. Why are these values being placed before the hex value and why is FC being changed altogether? To me, it seems like there is a problem internally converting the Alt code to hex. Is there a way to directly input hex values without using Alt codes in PuTTY? Answer What you're seeing is just ordinary text character set conversion. As far as PuTTY is concerned, you are typing (and reading) text , not raw binary data, therefore it has to convert the text to bytes in whatever configured character set before sending it over the wire. In other words, when y...
Post a Comment
Read more

linux - Extract/save a mail attachment using bash

Using normal bash tools (ie, built-ins or commonly-available command-line tools), is it possible, and how to extract/save attachments on emails? For example, say I have a nightly report which arrives via email but is a zip archive of several log files. I want to save all those zips into a backup directory. How would I accomplish that? Answer If you're aiming for portability, beware that there are several different versions of mail(1) and mailx(1) . There's a POSIX mailx command, but with very few requirements. And none of the implementations I have seem to parse attachments anyway. You might have the mpack package . Its munpack command saves all parts of a MIME message into separate files, then all you have to do is save the interesting parts and clean up the rest. There's also metamail . An equivalent of munpack is metamail -wy .
Post a Comment
Read more

keyboard - Is there any utility/method to change Windows key bindings to type rare chars to currently empty bindings?

I'm currently typing this post with my windows XP machine and (Spanish) keyboard, and I'd like to add some extra symbols to my text. I could open the "char map" windows utility, look for the desired symbols, and paste them. But I'd like something quickier. For example, when I'm using my OSX Mac at work, I can easily add a ©, ™, ® or similar symbols, just pressing some weird ALT-GR + G / H / J, key combinations. In my (Spanish) keyboard mapping, these combinations are empty, as they don't produce any char at all, which, on the other hand, is perfectly normal and desirable. So, I thought: Why couldn't I add some extra key mappings on top of my currently empty ALT-GR + G/J/H Keys in my Spanish keyboard, and thus, being able to quickly type these special symbols? So that's my question: Is there any utility/method to achieve that effect under windows? (My version is XP). I've even googled this for some time but no luck. I've been a long term Hot...
Post a Comment
Read more

Desktop reboots itself on sleep or hibernate

I have been using an ASUS M2NPV-VM motherboard for main home desktop workstation, operating Windows Vista x64. This computer has right from day one not been able to enter hibernate or standby; after Windows performs its final actions and brings the machine down, it would automatically revive itself for a reboot. Updating to the second latest BIOS (1201)has not helped (the latest BIOS revision would induce video refresh problems rendering it unusable). I have been reading related discussions on incidents similar to mine to no avail of a true workable solution. They appear to be more speculative guesses rather than actual knowledge on the inner workings of motherboard hardware. Does anybody have any electronic engineering experience on PC energy-saving standards to provide a more informed opinion how to go about getting this to work? More stories: this motherboard could not even reboot properly the first thing i used it. It was due to refresh rate of the onboard GPU, which had no influe...
Post a Comment
Read more