Why 20GB memory canot be access by a typical operating system?

Why 20GB memory canot be access by a typical operating system?

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Your sound out is confusing. If you are talking roughly speaking ram consequently it is because most operating systems are 32 bit and have a speculative maximum of 8 gb. I do not know why you would ever have 20gb of run into that is a huge amount. If you are motto 20gb of your hard drive is unaccesable later it could be that part is only not partitioned. If its the whole thorny drive there could be several problems.
it could be that your motherboard itself cant support that much RAM, but I know, supposedly, a processor can utilize up to terabytes of RAM...64 i guess, i forgot, but i've read once...
you may wanna check to see if the Jumpers are set to master instead of slave on the hard drive ( or vice versa) ... subsequent to where you attach the cable nearby should be a little clip resembling thing over some pins verbs the jumper out and check the configurations on the H/D.....if you hold two drive on the same computer that are both master or slave drives they won't work, one wishes to be a master and the other a slave drive.



P.S. be careful....bend the pins and you a short time ago bought a new H/D