Site Tools


Differences

This shows you the differences between two versions of the page.

Link to this comparison view

rhino:memoryincrease [2015/09/14]
127.0.0.1 external edit
rhino:memoryincrease [2016/05/13] (current)
sandy
Line 1: Line 1:
-====== More memory ​for Rhino 4 - from 2GB to 3GB ======+====== More Memory ​for Rhino 4 - from 2GB to 3GB ======
  
 > **Summary:​** //The newest Rhino 4 is "Large Address Aware"​. By making a small change in the **C:​\BOOT.INI** file or in the **BCD store**, you can increase the memory available to Rhino from 2GB to 3GB.// > **Summary:​** //The newest Rhino 4 is "Large Address Aware"​. By making a small change in the **C:​\BOOT.INI** file or in the **BCD store**, you can increase the memory available to Rhino from 2GB to 3GB.//
  
-**Warning:​** //<color darkred>​**Numerous ​technical support documents from Microsoft warn that the changes described below are  ill-advised for most situations. Make these changes with extreme caution and be prepared to reverse them in the event of problems. Use this information at your own risk.</​color>​**//+**Warning:​** //Many technical support documents from Microsoft warn that the changes described below are  ill-advised for most situations. Make these changes with extreme caution and be prepared to reverse them in the event of problems. Use this information at your own risk.//
  
-**Update:** //<color blue>4 Nov 07 - Recently, a Rhino user running dual screens on an ATI fireGL 5200 w/256, reported scrambled display problems. ​ After trying many other things, he eventually determined that switching back from 3GB to 2GB resolved the problem. ​ - JB</​color>​//+**Update:** //4 Nov 2007 - Recently, a Rhino user running dual screens on an ATI fireGL 5200 w/256, reported scrambled display problems. ​ After trying many other things, he eventually determined that switching back from 3GB to 2GB resolved the problem. ​ - JB//
  
-Update_2: 4 Dec 07 - After setting the /3GB switch on my own WinXP Pro system, I began having problems getting MSIE7 to exit reliably. ​ I ran this way for several months and recently removed the /3GB switch from the Boot.ini file.  My problems with MSIE7 have gone away. - JB+**Update 2:** 4 Dec 2007 - After setting the /3GB switch on my own WinXP Pro system, I began having problems getting MSIE7 to exit reliably. ​ I ran this way for several months and recently removed the /3GB switch from the Boot.ini file.  My problems with MSIE7 have gone away. - JB
  
-======Detail======+=====Detail=====
 Add the /3GB parameter in your **C:​\Boot.ini** file at end of this line and reboot: Add the /3GB parameter in your **C:​\Boot.ini** file at end of this line and reboot:
  
Line 20: Line 20:
 multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="​Microsoft Windows XP Professional"​ /fastdetect /​NoExecute=OptIn <color red>​**/​3GB**</​color>​ multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="​Microsoft Windows XP Professional"​ /fastdetect /​NoExecute=OptIn <color red>​**/​3GB**</​color>​
  
-**Note:** //It should pointed out to avoid further confusion that by default, the Windows File Explorer does not display "​Hidden system files" like C:​\BOOT.INI. ​ You will need to adjust your folder options to find the file, then change ​it'​s ​properties to remove the "read only" attribute before adding the "/​3GB"​ switch to the start options. ​ After making the change, you should make C:\BOOT.INI a read-only file again, then reboot the system to make the change take effect.//+**Note:** //To avoid further confusion that by default, the Windows File Explorer does not display "​Hidden system files" like C:​\BOOT.INI. ​ You need to adjust your folder options to find the file, then change ​its properties to remove the "read only" attribute before adding the "/​3GB"​ switch to the start options. ​ After making the change, you should make C:\BOOT.INI a read-only file again, then reboot the system to make the change take effect.//
  
 **In Windows Vista** **In Windows Vista**
Line 30: Line 30:
 BCDEDIT /set increaseuserva <color red>​3072</​color>​ - Changes the memory setting BCDEDIT /set increaseuserva <color red>​3072</​color>​ - Changes the memory setting
  
-**Note:** //In Windows Vista the BCDEDIT utility is used to first export and then modify the BCD store.//+**Note:** //In Windows Vista the BCDEDIT utility is used to first export and then modify the BCD store.//
 BCDEDIT is a command line utility and is run from a CMD Window. BCDEDIT is a command line utility and is run from a CMD Window.
  
-======Background======+=====Background=====
  
 Operating systems based on Microsoft® Windows NT® technologies have always provided applications with a flat 32-bit virtual address space that describes 4 gigabytes (GB) of virtual memory. Operating systems based on Microsoft® Windows NT® technologies have always provided applications with a flat 32-bit virtual address space that describes 4 gigabytes (GB) of virtual memory.
Line 46: Line 46:
  
  
-======If you experience video driver problems when using the /3GB switch (WinNT/​WinXP):======+=====If you experience video driver problems when using the /3GB switch (WinNT/​WinXP)=====
  
 If after adding the /3GB switch to boot.ini, you find upon rebooting that your video driver is not working properly (you'​re stuck with the VgaSave fall-back driver), adding the **/USERVA** switch as well may be the fix, for example: If after adding the /3GB switch to boot.ini, you find upon rebooting that your video driver is not working properly (you'​re stuck with the VgaSave fall-back driver), adding the **/USERVA** switch as well may be the fix, for example:
Line 54: Line 54:
 You can find more information on this switch at: http://​support.microsoft.com/​default.aspx?​scid=kb;​en-us;​319043 You can find more information on this switch at: http://​support.microsoft.com/​default.aspx?​scid=kb;​en-us;​319043
  
-Also, when modifying boot.ini, ​it is prudent ​to do so by including ​your changes as a second copy of the OS, so that if your changes are unsuccessfulyou can simply choose your original configuration on bootup. Here's an example Windows XP Pro boot.ini which might be useful while testing the /3GB & /USERVA switches:+Also, when modifying boot.ini, ​we advise you to include ​your changes as a second copy of the OS, so that if your changes are unsuccessful you can simply choose your original configuration on bootup. Here's an example Windows XP Pro boot.ini which might be useful while testing the /3GB & /USERVA switches:
  
  
Line 67: Line 67:
 multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="​Microsoft Windows XP Professional with /3GB" /fastdetect /​NoExecute=OptIn /3GB /​USERVA=2800 multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="​Microsoft Windows XP Professional with /3GB" /fastdetect /​NoExecute=OptIn /3GB /​USERVA=2800
  
-======If you experience problems when using the "​increaseuserva"​ in Vista:======+=====If you experience problems when using the "​increaseuserva"​ in Vista=====
  
 If after changing the memory setting using BCDEDIT, you can restore your original setting provided you made a backup. If after changing the memory setting using BCDEDIT, you can restore your original setting provided you made a backup.
Line 73: Line 73:
 BCDEDIT /import "​C:​\BCD Backup"​ - Imports original settings provided you made a backup BCDEDIT /import "​C:​\BCD Backup"​ - Imports original settings provided you made a backup
  
-Additional ​information on BCDEDIT ​can be found here:+More information on BCDEDIT:
  
 http://​technet2.microsoft.com/​WindowsVista/​en/​library/​85cd5efe-c349-427c-b035-c2719d4af7781033.mspx?​mfr=true http://​technet2.microsoft.com/​WindowsVista/​en/​library/​85cd5efe-c349-427c-b035-c2719d4af7781033.mspx?​mfr=true
rhino/memoryincrease.txt · Last modified: 2016/05/13 by sandy