2gb to 4gb memory upgrade; lenovo t60p


I recently upgraded my Lenovo t60p from 2g to 4g memory.

Fedora Core 14, latest kernel only sees 3g.

The following command seems to be saying that memory upstairs is reserved. High water mark is 4g. Bios sees 4g.

I don't quite understand why this memory is being used or what it's used for.

Does anyone have any ideas?



grep 'BIOS-e820' /var/log/dmesg
[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
[ 0.000000] BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000d2000 - 00000000000d4000 (reserved)
[ 0.000000] BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 00000000bfed0000 (usable)
[ 0.000000] BIOS-e820: 00000000bfed0000 - 00000000bfedf000 (ACPI data)
[ 0.000000] BIOS-e820: 00000000bfedf000 - 00000000bff00000 (ACPI NVS)
[ 0.000000] BIOS-e820: 00000000bff00000 - 00000000c0000000 (reserved)
[ 0.000000] BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
[ 0.000000] BIOS-e820: 00000000fed00000 - 00000000fed00400 (reserved)
[ 0.000000] BIOS-e820: 00000000fed14000 - 00000000fed1a000 (reserved)
[ 0.000000] BIOS-e820: 00000000fed1c000 - 00000000fed90000 (reserved)
[ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[ 0.000000] BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)
6 answers Last reply
More about memory upgrade lenovo t60p
  1. use the memory in any other system. if same problem occurs then your memory may be bad.....................
    you can also check by clearing electrostatic surges from the memory.......
  2. Have you got a 32bit OS?
  3. Hell_Storm,

    Thanks for your response.

    Yes, Fedora Core 14 x86_64... ALL up to date.

    I posted a bug on their bug site and they responded that it's a hardware design problem. It's hard for me to believe that Lenovo would advertise (it's in the spec) 4GB capable but not actually work with 4GB.

  4. Ok... Just one thing, check the BIOS settings for the RAM's. Try to do them manually. Play around and see if it solves the issue.
  5. Hell,

    I have looked over the BIOS settings. The machine, at least the BIOS says 4GB... This makes me think it's a software but FC 14 support seems to think otherwise. Sigh...

    AND, the last line of the BIOS-e820 numbers are in the 4gb range. 4294967296 according to a hex calculator I have.

    Thanks for your response! It's appreciated.

  6. Try posting the issue on Fedora forums. I have very little clue about that OS. They can let you know the ins and outs of the OS (if it is really the OS that is causing the issue).
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