Corrupted Data?

**Coolyxxx** · #1 5th Dec 2008, 00:43

Hi,

I was defragmenting my external hard drive with Defraggler, when a message from Windows popped up saying that there was something corrupted. The defrag stopped, and I couldn't access the drive. So I turned it off (my external hd has a on/off power button) because safely remove didnt work. Then I turned it on again, and thankfully, there was no data loss. I don't know why something like this would happen, I usually safely remove my drive... Other stuff I was doing, on the internet, and converting videos.

**philthomas** · #2 5th Dec 2008, 02:48

What was the exact error message ? .... without that, it's not really gonna be possible to determine the reason.

**Coolyxxx** · #3 5th Dec 2008, 04:17

I don't remember the message

A google didn't turn up any results...

**Coolyxxx** · #4 5th Dec 2008, 15:08

YAY found the log using everest.

2008-12-05 18:24:43 Fastfat 50: {Delayed Write Failed} Windows was unable to save all the data for the file . The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere.

And right after that there was this:
2008-12-05 18:24:44 Application Popup 26: Application popup: Windows - Delayed Write Failed : Windows was unable to save all the data for the file X:. The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere.

**philthomas** · #5 5th Dec 2008, 16:40

Try running chkdsk on the drive and see what it shows.

It may take longer, but chdsk /r will deal with any errors found, providing it's not a hardware issue.

**Coolyxxx** · #6 5th Dec 2008, 16:50

Chkdsk found no errors...

X:\>chkdsk
The type of the file system is FAT32.
Volume HARD DRIVE created 9/16/2008 9:31 PM
Volume Serial Number is 6853-5BA9
Windows is verifying files and folders...
File and folder verification is complete.
Windows has checked the file system and found no problems.
244,136,352 KB total disk space.
13,984 KB in 285 hidden files.
109,536 KB in 3,411 folders.
221,824,352 KB in 52,392 files.
22,188,448 KB are available.

32,768 bytes in each allocation unit.
7,629,261 total allocation units on disk.
693,389 allocation units available on disk.

**philthomas** · #7 5th Dec 2008, 17:12

If this has only happened the once and it happened whilst converting video files, it could just be a fluke, brought about by memory intensive tasks.
I would keep an eye on it and consider backing up anything crucial, just to be on the safe side.

Any reason why the drive is FAT32 ? .... this format is not as robust as NTFS.

**Coolyxxx** · #8 5th Dec 2008, 18:06

Ok, I will do a backup when I find time. The drive came as FAT32, and I didn't notice when I got it, so now it's got stuff, so changing to NTFS means formatting right? and that means erasing the stuff.

**philthomas** · #9 5th Dec 2008, 18:18

No ... you can convert it, see here for how

Having said that, in view of the issue with this drive, I would suggest the back up first

**Coolyxxx** · #10 5th Dec 2008, 20:49

ahhh, okay thanks