The computer has Windows XP with Symantec End Point AV.
Error message said “Hard Disk Full”.
Can’t run AntiVirus, since no “space” at all. Even can’t uninstall it.
I check using Windows Explorer, only end up to “Document and Settings” folder is the one having big size. If I enter to the contents of that folder, I couldn’t find the file having a big size. It’s mysterious! I set everything unhidden. So, I was sure no hidden files.
In safe mode, just the same.
If I delete some files, after some times the mysterious file/folder growth again and fulfill the HD again.
No AntiVirus could run, even the online Bit Defender just stuck.
Almost gave up and reinstall the Windows.
Finally I found a small program “WinDirStat“. When installed, it is only 0.68 MB. I installed it in the Safe Mode.
With this amazing program, I found that the culprit is a folder of Symantec End Point. It is in the “All Users/Applications/Symantec/Quarantine”
I delete the whole folder “Quarantine”. Then all went well.