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[ThuhPickle]

I cant thank you enough... seriously. This was so helpful.

[ipickurf8]

Thank you so much

[ubersquirl]

Ok, now the command prompt says:
C> "command : -java Xmx800m -jar "C:\Users\Jack\Downloads\Minecraft.jar"
'COMMAND' isn't recognized as an internal or external command, operable program or batch file.

I also tried it with the extension "Minecraft.jar.exe"  where I got:
Specified COMMAND search directory bad
Too many parameters
Too many parameters
Too many parameters
Too many parameters

and "Minecraft.exe", where I got the first error message (I have a copy of all 3)

I'm starting to hate my computer.    Assistance?

[mikeejimbo]

Seems to have worked for me, thanks!

Make sure that your file is Minecraft.jar and not Minecraft.jar.exe. Windows thinks that it's an exe called Minecraft.jar, and you want it to think it's a jar file so that Java can run it. To fix this, go into the command prompt and type "rename Minecraft.exe Minecraft.jar" in the directory in which you have Minecraft.exe. Then you can run your batch file like normal.

[ubersquirl]

I got this message again when I renamed and attempted Minecraft.jar-

ubersquirl said:

THIS IS THE ERROR:
C:\Users\Jack> java Xmx800m -jar "C:\Users\Jack\Downloads\Minecraft.jar"
Exception in thread "main" java.lang.NoClassDefFoundError: Xmx800m
caused by: java.lang.ClassNotFoundException: Xmx800m
           at java.net.URLClassLoader$1(Unknown Source)
           at java.security.AccessController.doPrivileged(Native Method)
           at java.net.URLClassLoader.findClass(Unknown Source)
           at java.lang.ClassLoader.loadClass(Unknown Source)
           at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
           at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: Xmx800m. Program will exit.

Then when I ran the command with Minecraft.jar.exe I got this:
C:\Users\Jack\Downloads> java -Xmx800 -jar "Minecraft.jar.exe"
Error occurred during initialization of VM
Too small initial heap

Still no clue, but patience is a virtue.   I feel like a n00b...

[Mihai Manole]

ubersquirl said:

I got this message again when I renamed and attempted Minecraft.jar-

ubersquirl said:

THIS IS THE ERROR:
C:\Users\Jack> java Xmx800m -jar "C:\Users\Jack\Downloads\Minecraft.jar"
Exception in thread "main" java.lang.NoClassDefFoundError: Xmx800m
caused by: java.lang.ClassNotFoundException: Xmx800m
           at java.net.URLClassLoader$1(Unknown Source)
           at java.security.AccessController.doPrivileged(Native Method)
           at java.net.URLClassLoader.findClass(Unknown Source)
           at java.lang.ClassLoader.loadClass(Unknown Source)
           at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
           at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: Xmx800m. Program will exit.

Then when I ran the command with Minecraft.jar.exe I got this:
C:\Users\Jack\Downloads> java -Xmx800 -jar "Minecraft.jar.exe"
Error occurred during initialization of VM
Too small initial heap

Still no clue, but patience is a virtue.   I feel like a n00b...

Do you see the difference?:
java Xmx800m -jar "Minecraft.exe"
java -Xmx800 -jar "Minecraft.exe"
and
java -Xmx800m -jar "Minecraft.exe"

If not let me explain to you:

[*:f3iml0pt] java Xmx800m -jar "Minecraft.exe"
without hyphen makes java interpret Xmx800m as a class name which is not what you want
[*:f3iml0pt] java -Xmx800 -jar "Minecraft.exe"
set maximum Java heap size to 800 bytes which is indeed too small, even for initialization of VM
[*:f3iml0pt] java -Xmx800m -jar "Minecraft.exe"
set maximum Java heap size to 800 MegaBytes

[Mihai Manole]

ubersquirl said:

Ok, now the command prompt says:
C> "command : -java Xmx800m -jar "C:\Users\Jack\Downloads\Minecraft.jar"
'COMMAND' isn't recognized as an internal or external command, operable program or batch file.

I also tried it with the extension "Minecraft.jar.exe"  where I got:
Specified COMMAND search directory bad
Too many parameters
Too many parameters
Too many parameters
Too many parameters

and "Minecraft.exe", where I got the first error message (I have a copy of all 3)

I'm starting to hate my computer.    Assistance?

Open notepad, write (cut & paste):
java -Xmx800m -jar Minecraft.exe
and save it in "C:\Users\Jack\Downloads", or wherever is minecraft.exe, as minecraft.bat

Run minecraft.bat from "C:\Users\Jack\Downloads"

[ubersquirl]

Well upon further research I was able to Update my video drivers after all and i'm now running Minecraft. Thank you for the help anyway, but now I feel stupid :/

[BadSackBoyZ]

[/quote](RENAME THE PART IN QUOTES TO WHATEVER DIRECTORY YOUR MINECRAFT.JAR IS IN)[/quote]

what does this mean? can somebody give me more instructions?

[aqrn0252]

Doesn't work for me.
I've got a Compaq 6720s with: Mobile Intel ® 965 Express Chipset Family.
Doesn't work

[Junet_Inthris]

Thank you very much, now I got atleast the game working. I don't get why it says I don't have accelerated openGL, my openGL is version 2.1. I really hope notch fixes that soon.

I've also noticed that with this workaround, my laptop only uses 3% allocated memory for minecraft, making the game a laggy ride until I set my view distance to tiny, which is rather annoying. Do you know how to fix this?

[ShadowolfMD]

Didn't work for me either.
I have the "Unable to access jarfile" I even tried the .exe. Nothing works.

Intel® 82945G Express Chipset Family

I'm really beginning to think I'm never going to be able to play this.

[ShadowolfMD]

Never mind, I got it working. I tried I hink Muhai's Or whatever his name was trick. Worked like a charm. Thanks man! I owe you like, Seven million. (Seriously. A whole month of trying to get it to work, and your's worked.)

[TheoQ99]

Mihai Manole said:

ubersquirl said:

Ok, now the command prompt says:
C> "command : -java Xmx800m -jar "C:\Users\Jack\Downloads\Minecraft.jar"
'COMMAND' isn't recognized as an internal or external command, operable program or batch file.

I also tried it with the extension "Minecraft.jar.exe"  where I got:
Specified COMMAND search directory bad
Too many parameters
Too many parameters
Too many parameters
Too many parameters

and "Minecraft.exe", where I got the first error message (I have a copy of all 3)

I'm starting to hate my computer.    Assistance?

Open notepad, write (cut & paste):
java -Xmx800m -jar Minecraft.exe
and save it in "C:\Users\Jack\Downloads", or wherever is minecraft.exe, as minecraft.bat

Run minecraft.bat from "C:\Users\Jack\Downloads"

I have this same problem, but doing that did not fix it. still says not a recognized command, operable program, or batch file.

i have intel graphics media accelerator HD

[kawks]

I have the same problem as the user above. It just keeps telling me "java is not recognized"

I'm on Windows 7 btw

[Nekomori]

My error is different. When I type the command in I get "The filename, directory name, or volume label syntax is incorrect" I know the file name and directory are correct. I've inputed the command about ten times and get the same thing every time. I'm not sure what to do.

[Malzblock]

When i try this, i get this message: 'Could not create the Java virtual machine.'
My Grafikchip: Mobile Intel 965 Express Chipset Family

Help D:

[Junet_Inthris]

Malzblock said:

When i try this, i get this message: 'Could not create the Java virtual machine.'
My Grafikchip: Mobile Intel 965 Express Chipset Family

Help D:

Did you install the newest Java version? Fixed it for a friend of mine.

[Malzblock]

Yeah, I have Version 6 Update 22 . This is the newest one.

[TartarusMkII]

Mihai Manole said:

Open notepad, write (cut & paste):
java -Xmx800m -jar Minecraft.exe
and save it in "C:\Users\Jack\Downloads", or wherever is minecraft.exe, as minecraft.bat

Run minecraft.bat from "C:\Users\Jack\Downloads"

This worked perfectly for me. All other options that came before Mihai Manole's did not work for me. I'm using a lenovo thinkpad laptop. Thanks, and let us all learn from that.