rns@se-sd.sandiego.ncr.com (Rick Schubert) (05/25/89)
I'm trying to find out how much physical memory my system has. Should the following give me an accurate figure? dd if=/dev/mem of=/dev/null bs=1024 This produces the output: dd read error: No such device or address 1024+0 blocks in 1024+0 blocks out I interpret this to mean that I have 1MB (1024KB) of physical memory. Is this correct? -- Rick Schubert (rns@se-sd.sandiego.NCR.COM)
wescott@ncrcae.Columbia.NCR.COM (Mike Wescott) (05/26/89)
In article <1940@se-sd.sandiego.ncr.com> rns@se-sd.sandiego.NCR.COM (Rick Schubert(AEP)) writes: > I'm trying to find out how much physical memory my system has. > Should the following give me an accurate figure? > dd if=/dev/mem of=/dev/null bs=1024 It might, but it depends on the implementation of the /dev/mem driver and on the contiguity of physical memory. Try dd if=/dev/mem of=/dev/null bs=1024 conv=noerror It might show more memory. Many NCR Towers have physical memory configured in noncontiguous address ranges. -- -Mike Wescott mike.wescott@ncrcae.Columbia.NCR.COM