High amount of RAM reserved


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Posted (edited)

Hello,

 

Installed not long ago DSM 6.2 on my 918+ (AMD 3400g CPU, 16 GB ram) with Jun 1.04 bootloader. However I have some trouble with high amount of reserved RAM memory. 

From what I understand from the FAQ (https://xpenology.com/forum/topic/9394-installation-faq/?tab=comments#comment-83064) this happens sometimes and then you need to do some edits in the grub.cfg file. 

 

However I dont understand the process of doing that in the best and safest way (I want to use the same USB memory as I do now)

1) Turn off the system

2) Remove the USB, plug it into my computer and find the grub.cfg file and then add disable_mtrr_trim

3) Insert the USB and start up the system? 

 

Or the process is more complicated?  Thanks!

 

 

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Edited by Xandyr
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The strange part of this question is that you edited grub.cfg when you built your system.  So here is the FAQ entry that covers this:

https://xpenology.com/forum/topic/13061-tutorial-install-dsm-62-on-esxi-67/

 

And just for good measure, here is a thread that asks and answers the exact same question, and describes a different access method:

https://xpenology.com/forum/topic/30105-trying-to-edit-grubcnf-on-installed-system-ds918-623-25426

 

Search is quite powerful on this forum.

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Posted (edited)
58 minutes ago, flyride said:

The strange part of this question is that you edited grub.cfg when you built your system.  So here is the FAQ entry that covers this:

https://xpenology.com/forum/topic/13061-tutorial-install-dsm-62-on-esxi-67/

 

And just for good measure, here is a thread that asks and answers the exact same question, and describes a different access method:

https://xpenology.com/forum/topic/30105-trying-to-edit-grubcnf-on-installed-system-ds918-623-25426

 

Search is quite powerful on this forum.

 

Thanks for the reply. The question is not regarding edit the grub file like I did before installing everything. Now after the installation and now that my server is up and running I just want to make sure what's the process of editing the grub file without messing anything up on my system are. What's steps should I take, can I edit without losing everything, without needing to redo the installation process. 

 

I searched this forum and with Google for days without finding my answer unfortunately. 

 

Edit: and I'm not using EXSi (I see you refer to some links using that) but that maybe doesn't matter?

Edited by Xandyr
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3 hours ago, Xandyr said:

Edit: and I'm not using EXSi (I see you refer to some links using that) but that maybe doesn't matter?

 

Sorry, I grabbed the wrong link - here is the baremetal install but the grub edit procedure is identical regardless of esxi vs. baremetal...

https://xpenology.com/forum/topic/7973-tutorial-installmigrate-dsm-52-to-61x-juns-loader/

 

I don't really understand your question though. How to edit grub.cfg, or whether editing grub.cfg will cause you problems?  Your first post asked how to edit, so I responded with the install links which talk about this, which conveniently you've done before.  I also gave you another link that allows you to edit grub.cfg from within a running system.

 

3 hours ago, Xandyr said:

I searched this forum and with Google for days without finding my answer unfortunately. 

 

I'm really not a search Nazi, and this forum is pretty low-key about search (there is a lot of content here, and much of it pertains to old versions) - but come on, why do people post this.  Not speaking for anyone besides myself with the following... Ask all the questions you like, but statements like this makes me feel like you don't respect the hundreds of hours that were spent on these posts at all. Urgh.

 

Spoiler

Type in "how can i edit grub.cfg" on the search bar and both the baremetal and ESXi install posts come up right under your own thread. Then right below that is "Tutorial: Mount boot stick partitions in Windows (editgrub.cfg, add extra.lzma)" Then tick the option to search "Content Titles only" it narrows down to only two posts - the tutorial and then the explicit procedure to mount synoboot and edit grub.cfg from a working system command line (same content as the second link I provided).

 

3 hours ago, Xandyr said:

can I edit without losing everything, without needing to redo the installation process. 

 

Specifically: editing grub.cfg changes the parameters sent to the boot loader.  It doesn't have anything explicitly to do with an install. If you really try, you can make your system not boot or blow up your arrays, etc. by making unwise changes in grub.cfg.  Just take good notes, be ready to restore prior configurations, etc. if something goesn't go as expected.  As always, you should have a backup of your data elsewhere.

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