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Remove 3GB RAM limitation on x64 CDV NAS model
#1
Applicable for :

x64 CDV (64 bits)
- N7510
- N5550
- N4800 series
- N4510U series
- N2800

From instructions posted elsewhere, in order to make the NAS to use more than 3GB of RAM you must modify the menu.lst file. This is what is used to boot the OS of the NAS, and passes several attributes for the OS at boot. For some unknown reason Thecus have set the memory hard limited to 4GB, with 1GB reserved for video, giving the system 3GB usable regardless of how much actual physical RAM is installed.

To use more than 4GB of RAM on NAS, you must:
1 - Enable SSH on the NAS
2 - From SSH type:
mount /dev/sdaaa1 /boot
vi /boot/boot/grub/menu.lst
3 - Press i to enter insert mode
4 - CAREFULLY remove the "MEM=4G" on the line from the "menu.lst" file.
5 - Pres ESC to exit insert mode
6 - Press ZZ to save the change and exit vi
7 - Reboot
8 - Confirm that more than 3GB is addressable by the NAS
9 - Disable SSH

*** This must be repeated following any firmware updates to the NAS! ***
------------------------------------------------------------------------
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#2
if I do this,
Can I use more than 4gb ram and also used kodi
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#3
You can use up to 8gb, see below from my N2800.
But i dont think the KODI (XBMC) will work, as this require to disable the Local Dispaly. You can test it yourself
Code:
Handle 0x0004, DMI type 17, 34 bytes
Memory Device
        Array Handle: 0x0003
        Error Information Handle: Not Provided
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 4096 MB
        Form Factor: SODIMM
        Set: None
        Locator: DIMM0
        Bank Locator: BANK 0
        Type: DDR3
        Type Detail: Synchronous
        Speed: 1066 MHz
        Manufacturer: Hynix/Hyundai
        Serial Number: xxxx
        Asset Tag: Unknown
        Part Number: HMT351S6EFR8A-PB
        Rank: Unknown

Handle 0x0006, DMI type 17, 34 bytes
Memory Device
        Array Handle: 0x0003
        Error Information Handle: Not Provided
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 4096 MB
        Form Factor: SODIMM
        Set: None
        Locator: DIMM1
        Bank Locator: BANK 1
        Type: DDR3
        Type Detail: Synchronous
        Speed: 1066 MHz
        Manufacturer: Kingston
        Serial Number: xxxx
        Asset Tag: Unknown
        Part Number: KFYHV1-HYC
        Rank: Unknown
------------------------------------------------------------------------
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Please respect my work and dont share my modules
[-] The following 1 user says Thank You to outkastm for this post:
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#4
i see. thank you for reply
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