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Max external hard disk size detectable

  • Desktops
  • Storage
Last response: in Storage
May 14, 2013 10:01:30 AM


I have an old desktop. P4, D915GlVG mobo (4Gb max DDR1 RAM, have currently 2.5Gb).

I haven't been able to understand the maximum size of an external hard disk my system can detect. Some posts say max 2400Mb for Windows etc.

Is there any size limit for external USB connected HDDs? Is it OS specific?


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May 14, 2013 10:23:41 AM

it is OS specific. if you use older windows you can use NTFS file system that can use 256 GB drives newer windows understand exFAT and the numer is much larger 64ZB, it is only on boot devices you have a max of 2 GB (on a 32 bit system, 64 bit can use it all). External dives you don't boot from can be huge.