I would suspect a HDD is failing, run a diagnostics test on them.

the_gnome

"siebo" wrote in message
...
Hi,
i have a problem with copying large files between my harddrives.
If i copy big files , like iso then the files get corrupted. CRC errors, i
checked with sfv file.
when i copy them from cd or dvd or download them, everything is fine.

hardware config

amd athlon xp 2500
2 x 512 mb pc 2700 ram
harddisks 1 x 60 gb , 1 x 100 gb on ide controller motherboard
1 x 160 gb on promise ultra ata 133 controller
OS windows xp

i listed the most important hardware parts.