My final solution: Starting Chrome from RAMdisk

As one can easily see reading my blog I truely love my RAMdisk. After experimenting with moving the cache of my Chrome installation to the RAMdisk I realized that the speed difference is quite small. So I finally found my perfect solution: I move my whole Chrome profile to the RAMdisk and I get an amazing speed gain (I suppose it is because of all the files that are written to during browsing like history etc.). Here is how I do it:

Most important and first of all: BACKUP YOUR PROFILE! Then backup it again. Did I mention that you should backup your profile? No? Then do it now!

Ok, then I installed Windows Server 2003 Resource Kit Tools from Microsoft to get RoboCopy, a superior command line tool. Then I created two batch files (.bat), one named “logon.bat” and one named “logoff.bat” (I put them into a seperate diectory like D:\scrpits but put it wherever you want – the only thing is that the directory should be accessible by every user who should use the scripts of course)). In the logon.bat I put the following line (please replace the parts where it says <username> with your actual username, e.g. bobby or HaX0R and adjust the drive letters (D is my hard drive, R my RAMdisk)) – it should actaully all be in one line:

robocopy "D:\Standalone\Iron\Profile" "R:\IronProfiles\<username>" /MIR /XD "D:\Standalone\Iron\Profile\Default\Cache" /LOG+:"D:\Standalone\Iron\<username>-backup.log"

All it does is copying the whole Chrome directory to the RAMdisk except the cache (it will be created each new each time) and writing a few lines to a log file (just to be save). On my EeePC 901 the copying takes a few seconds and is nearly not recognizable during boot. In the logoff.bat there is also one line:

robocopy "R:\IronProfiles\<username>" "D:\Standalone\Iron\Profile" /MIR /XD "R:\IronProfiles\<username>\Default\Cache" /LOG+:"D:\Standalone\Iron\<username>-backup.log"

This line copies all the changes back again except the cache (it will be deleted) to the harddrive and again write to the log file.  But as we use robocopy and we also use a few nice arguments with it it is only a incemental backup so very few bytes are actually written. Again the copying process takes only a few seconds.

I then ran the logon.bat by doubleclicking it to have the whole profile copied to the RAMdisk once. Then I changed all my shortcuts to Chrome. Rightclick on one of them and select “Porperties”. Then add –user-data-dir=”R:\IronProfiles\<username>” to the “Target” (or change the link accordingly if the user-data-dir argument already exists). Do this for each and every of your shortcuts pointing to Chrome, even the “Application Shortcuts”! To test if your profile works from RAMdisk delete or rename your profile in the original directory (D:\Standalone\Iron\Profile in my example) – you made backups, right? Now start your Chrome. Is your “New Page”-Page correct? Then everything is fine. Otherwise you screwed up along the way. Restore your backup profile and start again.

Ok, so now we have the bat files to copy the profile forth and back and we have all shortcuts changed and Chrome still works great. Now on to the last step: automating the copying. Select “Run” from the start menu and execute “gpedit.msc”. In the Group policy console (gpedit.msc) under ‘User Configuration\Windows Settings\Scripts’, you can specify scripts that are to run when the user logs on or logs off the computer. These scripts run as User, not as Administrator. Doubleclick the Logon entry and create a new entry for your logon.bat in the opening dialog. Do the same for Logoff. Be careful to use the correct absolute paths to the bat files! Then close all the windows.

You should be set now. During your next logoff changes in the profile should be copied to your hd and on the next logon the whole profile is pull into the RAMdisk again. You can try this out by restarting your computer (or logging off and on but during restart your RAMdisk is emptied so the effect comes clearer).

But watch out: if you choose to delete your profile dir on the harddrive to have it copied to it from RAMdisk once (I did this just to try it) you will get a black screen during logout. The copying takes quite some time so Windows turns to black – don’t know why. Nothing is wrong then and you can sit through it. If you don’t wait till it’s done and turn off your computer to early (e.g. by holding the power button) the copy will be corrupted. My tip is not to try this after all.

If you want to add this on a multi user system you’ll have to change a few things. I already made a step in this direction by naming the directories on the RAMdisk after actual users. But in the RoboCopy command you would have to use variables for the username etc. As I only have a single user system I didn’t try such scenarios but I would appreciate hints and tips.

2009
07/10
CATEGORY
eee pc
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UPDATE: Move your Google Chrome Cache to the RAMdisk

I posted a tip to move your Chrome Cache to a RAMdisk a few weeks ago. After further testing I discovered, that somehow sometimes the junction points to the R-drive are deleted. I do not know for sure why that happens but I found out that it doesn’t happen if you create the directories at startup. So I created a bat-file containing the following:

mkdir  R:\cache

Save the file (name it dirs.bat for example) to your Startup directory of your Startmenu (something like C:\Documents and Settings\<username>\Startmenu\Startup (on Windows XP)) or to the Startup of all users (C:\Documents and Settings\All Users\Startmenu\Startup).

There would also be the option to load a image into your RAMdisk on startup so that much more complicated directory structures etc. would be possible but I couldn’t find out how to do that.

2009
07/02
CATEGORY
eee pc
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Short tip: move your spool folder

Microsoft has a quite good tutorial on moving your spool folder to another drive. I used it to move it to move the folder to my RAMdisk as the spooler is just another temp directory that writes a lot to your ssd and pushes it further to its write limit.

2009
05/28
CATEGORY
eee pc
short tip
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Move your Google Chrome Cache to the RAMdisk

After you got yourself a nice new RAMdisk and move a lot of things to it you may have experienced a few problems with moving certain directories.

On my EeePC 901 I use a version of Google’s browser Chrome. It is called Iron by SRWare and has a few additions that I found very valuable. First of all it is somewhat “de-googlified” (see details at their site) and second it uses a adblock.ini to … well … block ads. Furthermore I use the portable version because it is the pretty simple to backup because everything is in one single directory, even the profile(s).

Chrome (and Iron) has no option to move or disable the cache which is located at something like C:\Documents and Settings\<username>\Local Settings\Application Data\Google\Chrome\Default\Cache (on Windows XP) . So, how do you get it on your RAMdisk? Pretty easy:

XP with NTFS supports so called junction points. The only problem is that XP doesn’t support them very well. If they are there it knows how to handle them but you can’t create or remove them easily. There are a few programs that can do that for you like Hard Link Shell Extension (which I would recommend if you use hard links and junction points quite often) and Junction Link Magic (which I use as an occassional user). Both programs have very good and detailled how-tos on their sites so I won’t go into details on how to create a junction point.

Now cut-and-copy (the origial directory has to be empty!) the content of your Chrome cache to your RAMdisk (I use a subdirectory called “R:\cache”) and create a junction point which links the original cache directory to your new one and you are done. Wow, that was hard … Now Chrome and even XP think they write to the old directory but the files are on the RAMdisk now.

Btw: if you’ve created additional profiles you have to move the cache for every single one of them.

2009
05/28
CATEGORY
eee pc
1 comment

A RAMdisk for everyone

A RAMdisk is a pretty good tool, especially if you use a computer with a SSD (Solid State Disk) like I do in my EeePC 901 (12Gb version). There are a lot of RAMdisks out there but most of them are not free. I recently found a really good RAMdisk software that costs nothing and has enough settings for my wishes. You can download it here – there is also a description how to use it.

But in short: unpack the downloaded zip, fire up the ramdisk.exe and click “Istall Ramdisk”. After that enter your settings. I use 384 Mb for the RAMdisk on my eee pc 901 with 2Gb RAM. Choose a drive letter (I kept the R:) and set the Media Type to “Fixed Media”. Finally click “Apply” or “OK”. Now you are done – you can see the result in “My Computer” as there is now a new drive “R:” (or whatever letter you asigned to it).

Now on to the fun stuff: right-click on “My computer”, then select Properties->Advanced->Environment variables. Then look for all the TEMP and/or TMP entries and change the according path to R:\Temp or any other directory on your RAMdisk. You wouldn’t even need to specify a diretory but I think it keeps everything a little bit more tidy.

You can also move your Temporary Internet Files, your Firefox Cache or any other browsers temp files there. These files are used a lot so the wear off your SSD faster. But be aware: not using a browser cache slows down your browsing (a bit) because frequently used sites are no longer cached. I have a quite fast connection most of the time so I don’t care about downloading a few bytes more or less – I switched to a cache on the RAMdisk and didn’t regret it.

2009
05/28
CATEGORY
eee pc
2 comments
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