Hi all,
up to now, I am using CW SONAR by Gibson and CW SONAR by Bandlab as parallel installations.
It seems this practice becomes obsolete, but I am just not sure to cut the rope concerning CW SONAR by Gibson.
Should I just uninstall it, and what would I have to observe if I do this? Many folders are being shared by the 2 installations, I would hate to delete a folder that CW SONAR by Bandlab needs. 
My SSD system drive (500 GB) has little space left... The alternative would be having a larger system drive, but cloning the system drive in a system with Windows 10 (64 bit) is said to be tricky.
Any hints, please? 

You might lose some plugins if you uninstall. Personally, I would bite the bullet and spring for a bigger drive. I'm sure cloining is possible, some research should solve that. Or you could clean install Windows, but that of course is an ordeal and a half.

The Platinum program folder, user directory (including the master copy in ProgramData) and "Cakewalk Content" use ~1.5GB. Of that about 50% is in Cakewalk Content\SONAR Platinum\Tutorial Projects. Deleting the Tutorial Projects folder is a safe way to return a little over 800MB of space still leaving Platinum intact for CbB to use. That said, if a 500GB system drive is that close to full even returning all of the 1.5GB is not a big get.
 
Most of the disk space consumed by a full Platinum install are samples for the bundled synths. The sample libraries for DPro and Rapture Session are several times larger than the Platinum program and support files. Relocating the samples to another drive may be a good idea if it has not been done.
 
Another thing that could consume a lot of space is the download cache used by Cakewalk Command Center. If that was not routinely backed-up and purged it could get pretty big. By default, the path to the download cache is C:\ProgramData\Cakewalk\Command Center\Downloads. The actual path in show on the Paths tab in Cakewalk Command Center settings (click the gear in the upper right of the Command Center UI for the settings page). The files in that folder are the installers for Platinum and all the content. Backup the files and clear the folder.

Don't uninstall Splat, you'll lose too may plugins. I've always kept my C drive lean, so my image files aren't that big. I always downloaded Cakewalk Command Center files to my data HD not my C drive. 
 
My Cakewalk Content folder is on another HD also and it's 14 gigs. I'd strongly recommend not be using your C drive for your wav file folder for songs, put those on another  HD. 
 
Your OS drive should be SSD and your sample HD should be SSD, so your song loading time is very fast. No need for your Cakewalk Content folder to be on an SSD HD or any other type of data, like exported wav files or mp3's.
 
Also if you choose clean up system files on your C drive you can gain about 15 or more gigs. These are files if you decided to rollback to an earlier Win version.
 
 I'd take a hard look at your 500 gig C drive and see where all the space is being used. Also CCleaner is a great way of cleaning up a bunch of useless files.

I've cloned Windows 10 for upgrading to larger drives several times on my music/Cakewalk desktop and several laptops and it seems to work well and quickly. Do you have more than Cakewalk/Sonar program files on your drive, like the project files? It sounds like it.
 
I use a 500 GB SSD for my "C" drive and have Windows, Sonar/Cakewalk, and all of my other program files on it and have all my Sonar/Cakewalk project files on a 3 TB magnetic drive "D" that is backed up on another 3 TB drive "E" using the built-in Windows 10 automatic backup program. Big multi-terabyte drives are fairly cheap these days (around $100 for a 4 TB magnetic drive on Amazon, and around $60 for 3 TB, wow the prices have really dropped). That's an option you should look at as the project files just keep getting bigger and bigger....My "D" drive is actually showing up as red on "This PC" in Windows but it says I still have about 240 GB of free space which is pretty big. Of course, I also store a boatload of family pictures and videos on there but I guess that's modern day life with computers and I wouldn't trade it for the old days of recording on cassette tapes "hey guys, you can hear us pretty well over all that tape hiss"...

HI:)
 
As user390096 said, cloning the drive is very easy and fast and I never had problems with it. You can move your Win 10 license even with a new motherboard just with a few clicks....
That's what I've done 2 months ago. New motherboard, new SSD, same graphicscard. Just cloned the old SSD and registrated win10 with this new MB.
 
Bassman.
 

I had recently cloned my aging boot/system magnetic hard drive a Western Digital VelociRaptor 10K rpm 500 gig  to a Western Digital SSD 500 gig with Windows 10 using the Acronis software that shipped with the SSD to clone it, and it was shockingly FAST and simple cloning and transferring about 240 gigs of data took about 20 minutes to complete.
  I set Acronis up started it and by the time I had a cup of coffee and eat an egg sandwich it was DONE!
 
 I was very suspicious, I was preparing myself for the worst possible scenario thinking "Oh what kind of new Hell has this free Acronis software unleashed upon me?", because cloning has at times been a bit NERVE WRACKING! It usually took me hours in the past, and some times had to be repeated when failed the first time around, very annoying and time consuming to say the least.
But when I disconnected the VelociRaptor and set the SSD up as Boot Drive in BIOS I was amazed when my computer booted right up the way I left it.. Just a bit faster. I didn't even have to reregister any plugins with iLOK , Sony, or XLN Audio and was a pleasant surprise and first for me.
 
WD Raptors spin at 10,000 rpm, and are very fast to begin with, quiet as a church mouse, but mine was over 7 years old and I being I had a couple of failed boot ups in the past month or so, and I think I might have heard some strange rattling noise(?) so I figured it might be getting old, tired, and weary, so it's always better to stay on the save side and replace it with a new one, but...….. WD stopped manufacturing VelociRaptors, but, after buying out SanDisk, replaced the VelociRaptor line with the SSD line  soo...……..
That just made it a tad bit more scary having read some horror stories about SSDs in the past, just failing without the slightest signs of warning (like strange rattling noise from mechanical failure, but most of these stories were over a couple of year old now, soooo...…..
 
Also knowing that I can always plug my old cloned drive back in and start right back up where I left off, I went in to Newegg and bought me the WD SSD, and got Shell Shocked at how much the price went down and warrantee went up!
$74 (us) for a 500GB WD SSD with a 5 year warrantee! Pretty much the same as the WD VelociRaptors, except they cost $350 7 years ago, which was pricey, yes, but they were the world's fastest most reliable champions.
 VelociRaptors are so fast I didn't see much of a performance boost, bench test results of 6%, but that's still noticeable. :o)
 
 And so after a few months now, I've grown from fearing SSDs to really, really liking them
 Same as I have Win 10, which after years now, has proven to be sooo freaking better and makes my life sooo much easier and hassle free than ANY other OS has ever done in the past.
 Especially during upgrading which is does all by itself, if it fails it just rolls itself back and you're right back where you left off.
If for some reason you don't like the upgrade, you have 30 days to decide roll it back.
 
As long as you have hardware and software that ISN'T over 6 or 7 years old, you should have zero problems with Win 10.
 
 But if you do love the vintage stuff, stay with your vintage computer and vintage OS and be happy until it dies.
 But the longer you wait the stranger you will feel in the strange land of ever evolving technology.
 And you will most likely feel ridiculous when you realize how much better and easier it gets, and also realize it better to keep learning in small in small increments than having to start all over in BIG CHUNKS.
 
 There's REALLY NOTHING TO FEAR BUT FEAR ITSELF!
 
 

I still have ALL of my project folders on my HDD but I'm probably going to have to remove them soon as I'm running low on space on my onboard 1TB drive on my music dedicated PC.  But you need to understand that I keep everything.  Every vocal take, etc and I could probably get rid of most of it and still maintain enough data for remixes or whatever down the road but it's an obsession with me.  I hate tho throw things away, even digital stuff.  I have all my projects backed up on a newly acquired TB Passport USB drive.  Deleting those project files from the HDD would give me back about 2/3 of my so far used space.
 
Regarding cloning-I didn't know it was so easy.  I put a thread up on this forum several weeks ago regarding backing up the whole HDD in case of total data loss or corruption. I think what I was really looking for was cloning, but I didn't use that term at the time.  I used the term "backup" so everybody just went along and gave me answers about backups.   Cloning was what I had in mind like explained here.  I want to move all my system files, including data, configurations and setups just as they are to a new drive so if I have to replace say a motherboard or something hardware, I can do that without starting over again after the fix.  I'm also looking at the possibility of a solid state drive.  Aren't those still kind of expensive though?

michael diemer
You might lose some plugins if you uninstall. Personally, I would bite the bullet and spring for a bigger drive. I'm sure cloning is possible, some research should solve that. Or you could clean install Windows, but that, of course, is an ordeal and a half.

Thankx, I shall see through the other answers, I just had to clean install Win 10 6 weeks ago, and you are right, it WAS an ordeal.  
Maybe I really go for a bigger System drive, there are SSDs with 1 TB at reasonable prices around this very season. But I know, the season doesn't last for long. ;-)

scook
The Platinum program folder, user directory (including the master copy in ProgramData) and "Cakewalk Content" is around 1.5GB. Of that, about 50% is in Cakewalk Content\SONAR Platinum\Tutorial Projects. Deleting the Tutorial Projects folder is a safe way to return a little over 800MB of space still leaving Platinum intact for CbB to use. That said, if a 500GB system drive is that close to full even returning all of the 1.5GB is not a big get.

I had deleted those already since I believe I am relatively firm in the use of SONAR :-) 

scook
Most of the disk space consumed by a full Platinum install are samples for the bundled synths. The sample libraries for DPro and Rapture Session are several times larger than the Platinum program and support files. Relocating the samples to another drive may be a good idea if it has not been done.

I am a bit reluctant to do so because the system drive is an SSD. I am therefore musing to go for a 1 TB SSD which is available for a few days more at a reasonable price. Thanks to black and cyber week. I know I've to hurry up then.

scook
Another thing that could consume a lot of space is the download cache used by the Cakewalk Command Center. If that was not routinely backed-up and purged it could get pretty big. By default, the path to the download cache is C:\ProgramData\Cakewalk\Command Center\Downloads. The actual path in show on the Paths tab in Cakewalk Command Center settings (click the gear in the upper right of the Command Center UI for the settings page). The files in that folder are the installers for Platinum and all the content. Backup the files and clear the folder.

Thankx again, I had changed the download path to my second (HDD) drive quite early as I noticed quite early I need to control the available disk space.