Any potential for file corruption?

[10basetom]

I performed a

Code:

JkDefragCmd.exe -a 7 -f 0 -d 3 d:

but while it was doing the defrag my laptop overheated and the laptop suddenly turned off without shutting down Windows (XP Pro SP3).

Can this lead to corrupted files? Or does jkDefrag ensure that a file cluster is successfully written to the new location before deleting the old location during the move.

My disk has a lot of important files that cannot be corrupted, so I'm just paranoid that now there is a corrupted file(s) somewhere on my disk.

Thanks,
Tom

[Darlis]

JKDefrag uses the Windows API to move files, so the program itself is completely safe. The API does a lot of things to prevent any corruption, but since a crash is not normal, everything is possible. You should definitely run checkdisk on your partitions. This does not check file integrity though.

My disk has a lot of important files that cannot be corrupted, so I'm just paranoid that now there is a corrupted file(s) somewhere on my disk.

Every file that is not backed up is not an important file!

[BloodySword]

You should save any file and trash the laptop. If it overheats while a normal defrag is running, this thing is completely trashed. There is nothing that can be done on this thing since it is more expensive than buing a new one...

[Darlis]

The laptop is not necessarily trashed. Maybe the fan is just clogged with dust.

[jeroen]

Can this lead to corrupted files?

Not if it is an NTFS harddisk. For more information see How safe is MyDefrag? To prevent overheating because of using MyDefrag you could lower the Slowdown setting.

Or does jkDefrag ensure that a file cluster is successfully written to the new location before deleting the old location during the move.

Yes, of course.

[10basetom]

Thanks for the reply, guys.

To clarify my scenario...

- D: points to a 1GB memory card formatted as FAT (so I assume no journaling on the card per se).

- My laptop has been doing cold shutdowns a lot recently -- this is not normal. I think, as Darlis suggested, I might have to open it up to clean out the dust balls, which are even visible through the vents. This laptop has been my daily beater for two years now, but it's still pretty fast for my needs.

I think I'll run chkdsk on the card and manually go through each document to make sure nothing is corrupted.

Tom

[Darlis]

- D: points to a 1GB memory card formatted as FAT (so I assume no journaling on the card per se).

Yes, FAT is a lot less safer than NTFS.
And you shouldn't sort files on a flash disk: This will wear out the drive much faster and there is no performance gain. MyDefrag has a special script to optimize such drives. You might consider upgrading.

You can use tools like HWMonitor to take a look at the temperatures (if they can be read).

[racassel]

If you have files on your hard drive that "simply cannot be corrupted", you should back them up on a regular basis.
There are a lot of places you can get 2gb -5gb for free (hotmail, google, mozy, online etc) or get a cheap usb drive.  There is no excuse for not backing up your stuff up, other than idiocy.

[keanrose]

The laptop is not necessarily trashed. Maybe the fan is just clogged with dust.

Maybe it's an indication that he will buy a new laptop.
 
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