I try to overclock my celeron from 400 to 450. When i load windows 98, there is no problems even when i use some programs word, excel, quicken.....Then i reboot and i have a message "invalid disk system" or windows
98 cant find some files in system.ini
-hd: seagate 8.4 Go (st38420A)
-video card:guillemot xentor 32
o/c 400 to 450 using FSB 75Mhz should run really smooth with the default settings and shouldn't do much harm to your system. As much as it seemed like that speed corrupted your HD, it could just be a software problem.
Have you tried increasing your core voltage to 2.05v? or higher?
It appears that your hard drive can't hack the 37.5 MHz PCI clock. Some Seagates have this problem. Try unchecking DMA in the hard drive properties under Control Panel, System Properties. Many hard drives that corrupt or have problems with DMA on don't with DMA off. If it's OK then, get a new Quantum or Western Digital hard drive; they both O/C fine up to the 83 MHz FSB. You should get a new hard drive because O/C'ing your CPU while crippling the hard drive by turning off DMA doesn't make a lot of sense.
I can overclock my celeron to 411 mhz(68*6)
Also, i send a e-mail to seagate and they say:
"That would be an issue with your controller card. The drive does not negotiate
with the pci bus only the controller.
This may be driver/or overclocking related. For further information you will
need to contact Microsoft and your motherboard manufacturer."
"This is an operating system issue. The drive only stores 0's and 1's. Contact
Microsoft for further information.
If you are overclocking that may be the issue"