VSuite Ramdisk FAQ

Q: I can't uninstall the program. Why?

A: Before uninstallation, you need to remove all the existing ramdisks. If you set Windows paging file on the ramdisk, you need to remove it in order to remove this ramdisk.

Q: Does the Professional Edition supports to create a ramdisk above 4GB RAM size?

A: No. Only the Server Edition supports that. However the Professional Edition can utilize unlimited RAM. For eg. if you have 16GB RAM, you can create three ramdisks with each of 4GB RAM size.

Q: What do you mean by "Maximum Ramdisk size" and "Maximum RAM usage" in the Edition Comparison Chart? What's the difference in the ramdisk size among these editions?

A: The item "Maximum ramdisk size" means maximum allowed capacity of a ramdisk. And the item "Maximum RAM usage" means total size of RAM can be allocated for ramdisks. 

For instance, the Standard Edition allows maximum ramdisk size up to 4GB (4096MB) and maximum RAM usage up to 6GB. Supposed that the system has 8GB RAM installed, and if you have created a 4GB ramdisk, then you are able to create another maximum 2GB ramdisk.

The Professional Edition has no limit to the total utilized RAM. So users can create multiple  ramdisks, each one is up to 4GB size. 

The Server Edition doesn't have any limitation. Users may create multiple ramdisks, each one's size is greater than 4GB, if RAM is enough. 

Q: I get an error message saying "Your computer does not support PAE feature." when I tick "Enable OS Invisible Physical Memory" in the "Options" tab. However my hardware shall support PAE feature. How can I enable it?

A: Windows automatically enables PAE if DEP is enabled on a computer, or if the computer is configured for hot-add memory devices in memory ranges beyond 4 GB. Otherwise PAE must be explicitly enabled.

For Windows Vista and later, run the command prompt (cmd.exe) (need to run as administrator) and input the following command:
bcdedit /set pae ForceEnable

For Windows Server 2003 and Windows XP/2000, find and open X:\boot.ini file where X is the drive letter of the location of the Windows boot files, Ntldr, Boot.ini, and so forth. (You need to remove the Read-only attribute of boot.ini to modify this file.) Modify the line that corresponds to your OS by appending the /PAE switch.

Restart the computer to take the above changes effect.

Q: I have enabled the IM Hibernation feature, then can I place the Windows paging file to the ramdisk using Invisible Memory if I want to support hibernation?

A: No, you can't. Otherwise you may get BSOD when resuming from hibernation state. However you can place it to a ramdisk which utilizes OS managed memory.

Q: I am using Windows Vista Business (32-bit) and IE 7.0. When I try to put IE's temporary files on the ramdisk, it seems that IE becomes very much slower. Why?

A: This issue may be related to NTFS file system and is coming from Microsoft, please refer to this article from Microsoft:http://support.microsoft.com/kb/937828.

An alternative solution is using FAT32 file system for the ramdisk

Q: I set up virtual memory on the ramdisk, however Windows restore it to the C drive (Windows root drive) after reboot.

A: Please use the latest version. And you shall not set up too small size of virtual memory (paging file), although Windows allows minimum value to be 2MB. For eg, if you set the minimum size as below 20MB, Window may fail to create pagefile.sys and restore it to the default size (normally 1.5 times the installed RAM) on C drive.

For more details, please view VSuite Ramdisk Online Help.
For other questions, you may visit our forum or e-mail us.