Hi. a few months ago i installed a samsung HM100UI 1TB 2.5" HD in my MacBook. Installed lot of programs including REFIT and drive becomes corrupt almost each reboot. I have to boot from SnowLeopard DVD and repair...After a week of problems i formatted the drive and installed only essential programs and no more corruption. Yesterday i installed Refit again in order to boot from usb stick and the corruption on the disk resurfaced immediately. repair and uninstall of refit took the problems away so i'm pretty sure OSX HFS main partition (which is around 840GB) corruption comes from the REFIT software. worked perfectly on the previous 500GB HD, so i suspect it has something to do with the large capacity of this drive. Anyone seeing this behavior?
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