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Im attempting to run minecraft with these command prompts to allow the game to run with 2GB of ram (my PC has 8 in total) Yet the game thinks im trying to use over 2 million KB of ram (which is still roughly 2gb of ram) In case if you are wondering, yes i am using the old school minecraft launcher, i never updated because i cant. The new launcher also wont run on my PC even though a few months ago i was able to use 2gb of ram and the new launcher. i have no idea what is happening

PC Specs

GTX 950 SSC overclocked
Intel Skylake i5 6500k 3.2 Ghz (quad core)
Corsair 8gb ddr4 ram clocked at 3000mhz
single Samsung ssd 255 GB
single Microsoft 7200rpm 600gb HDD
EVGA 600W 80+ Bronze certified
1920x1080 Acer monitor
Gigabyte motherboard (dont know which one)
Windows 7 home premium

Quote from YuNoGuy123»

Im attempting to run minecraft with these command prompts to allow the game to run with 2GB of ram (my PC has 8 in total) Yet the game thinks im trying to use over 2 million KB of ram (which is still roughly 2gb of ram) In case if you are wondering, yes i am using the old school minecraft launcher, i never updated because i cant. The new launcher also wont run on my PC even though a few months ago i was able to use 2gb of ram and the new launcher. i have no idea what is happening

PC Specs

GTX 950 SSC overclocked
Intel Skylake i5 6500k 3.2 Ghz (quad core)
Corsair 8gb ddr4 ram clocked at 3000mhz
single Samsung ssd 255 GB
single Microsoft 7200rpm 600gb HDD
EVGA 600W 80+ Bronze certified
1920x1080 Acer monitor
Gigabyte motherboard (dont know which one)
Windows 7 home premium

1) Dont allocate more RAM if you dont need it(for mdos or resource packs), it makes it worse
2) Use -Xmx2G
3) Its not exact, might be more or less due to java using some extra memory for some things

#1 Im attempting to use quite a lot of mods, and im using shaders

#2 ive already tried that, it still gives me the Could not reserve enough space for 2097152KB object heap error

#3 i know its not exact, im not trying to be exact, Even then I still have 8gb of ram

You are using Java 32 bit or 64 bit? Does it crash without adding more RAM saying out of memory?

i have java 64 bit, and yes it does if i play for 15 mins and my map doesnt save

It doesnt save? How you are closing it?

The game runs out of memory and when i go back into the world, it only saves from the point to where i quit the game last time

Thats because its crashing

i know that

Post the entire launcher log following http://hopper.minecraft.net/help/guides/minecraft-logs/

I dont USE the new launcher, in my main post i stated this "In case if you are wondering, yes i am using the old school minecraft launcher, i never updated because i cant. The new launcher also wont run on my PC even though a few months ago i was able to use 2gb of ram and the new launcher. i have no idea what is happening" But for the second part of your question

Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

Thats it, that LITERALLY the entire log

That would be the "Game output" log, post the "launcher log".

Well, after digging around more, i was able to get the full minecraft launcher, and there. It works

Quote from YuNoGuy123»

Well, after digging around more, i was able to get the full minecraft launcher, and there. It works

Full minecraft launcher? What launcher were you using and what you are using now?