I wanted to upgrade my hard drive from 30GB to 320GB. Dell said it was compatible. Upon installation PC said I had only 137GB.When I called Dell support they said the max capacity was 100GB.They are refunding my money. Should I go to someplace like MICROCENTER?
The 600m will take a HDD larger than 100GB (or 137GB), as long as the boot partition (1st partition) is smaller than 137GB. If you don't partition the drive, it will work fine until data is written in a sector beyond the 137GB mark at which point it will be dead on the next restart.
I thought I'd toasted two 250GB HDDs until I found this fix. 1st partition is 120GB now and it works fine (for 2+ years). I don't know if subsequent partitions also need to be less than 137GB? You could experiment or just play it safe...