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I received a laptop from my university. It came with Windows 8.1 Pro pre-installed. The problem is that the space on the C: drive was only 29 GB and there is no adjacent space on the right side to increase. Disk 0 was GPT and Disk 1 was MBR. When I tried to install some software I kept getting low disk space warnings, so I looked for every possible way on the Internet. I also used mini tool partition wizard, and AOMEI Partition Assistant. They also couldn't help me. Then I decided to convert Disk 0 from GPT to MBR using AOMEI Partition Assistant, but then my laptop wouldn't boot up and I got some shell coding screen to add shell commands. I then tried installing Windows 10 from a bootable USB but it said I can't install Windows on an MBR disk. (I did a re-install of Windows because I thought I could increase the space during installation. In the past I could do that in Windows XP, but here I wasn't able to do this because it said in UEFI systems Windows can only be installed to GPT.)

Then I searched and again changed MBR to GPT using the Diskpart command from the command prompt, and now it's taking almost 20 GB of space and I'm afraid it will again give errors of low disk space because I need to install Adobe Illustrator, Photoshop, Indesign, Android Studio, and other software, and the space is very very low for all of that.

For another try I changed my Disk 1 to GPT and made another partition for 146 GB so I could install Windows on it. When I again tried, it said "Windows can't be installed on this disk. Setup does not support USB or IEEE 1394 Port". I was shocked. I have no other way now. I don't have a CD-ROM in this laptop, and I can only use USB for installing Windows. Is there any way I can add the unallocated space to drive C:?

PS: When I tried installing Windows it was assigned and the partition was made properly. I have now freed some space and it is again showing as unallocated (see screenshot) but I properly made it. When I tried to install Windows it was to drive D:.

Disk Management view:
Current situation of system

Windows Explorer view:
Current situation

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  • Will you please share the Laptop model?
    – UkFLSUI
    Jun 27, 2017 at 6:53
  • System Manufacturer: Haier Computer Model: Y11B BIOS: 5.011 Processor: Core M
    – vampz
    Jun 27, 2017 at 7:01

2 Answers 2

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From the disk management image, it seems that you are having 2 separate hard disk in your laptop. The disk 0 (32 GB) being the SSD to make boot up the Laptop faster and the other disk 1 (500 GB) being the secondary hard drive.

So, you have no option to extend disk 0 anymore as it is 32 GB in size physically. So you have basically 2 or 3 options in your hand in that case.

1st option is one you are having right now. That is, installing windows in disk 0 and use other drives of disk 1 for software and games or other data. Most of the experts also advise to do so for better performance as SSDs are meant to do so. But SSDs being too small in size, you may face some problem related to storage. If you monitor the disk spaces regularly and maintain them, then I guess it will not be a problem for you. If you install normal software or games in other drive, then they do not take too much space in C: drive, but keeps some smaller data there. But if you use some heavier program like Android Studio you mentioned, then it might be a concern for you as these types of software stores larger user data though some of them can also be transferred to other drives but it may be irritating for some users.

Another option is moving the USER's directory to other drive which may save you a lot of space in case you install some heavy software. You may follow this: http://lifehacker.com/5467758/move-the-users-directory-in-windows-7. But I don't recommend this as you may mess up everything in this process.

Another thing you may do is installing windows on your secondary hard drive (disk 1) and use the SSD for normal data storing. Though it will provide less performance but I guess it is a better solution in your case. You have already tried to install windows 10 on the secondary partition with failure. But follow these steps exactly and I guess it will help. And in this case obviously don't keep another installation of windows in your disk 0. Just delete the whole disk partitions and later format it.

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  • thanks for now I have decided to go with alternate option of installing softwares on disk D...in future if i again need this i'll surely try the steps provided by you thanks once again
    – vampz
    Jun 28, 2017 at 1:17
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With your current setup you won't be able to increase the size of the current system disk. You could try to install software etc. to your secondary drive. As the setup complained about it being a Firewire/USB drive I guess it's not an internal drive?

You could also look into Windows to Go to have a stick to run Windows from but I'm not sure about the performance impact. As the internal disk size for your device is only 30 GB my guess would be it's a Netbook so you won't be able to open it to change the disk. If it is a normal Notebook check the manual for information on how to exchange the drive for a bigger one.

As you currently have about 18 GB free space on your C:\ drive you could probably work quite a while with it if you take care to not install software, if possible, directly onto your system drive. Most setups (usually by running the extended/custom option for the process) allow you to select where an application should be installed to.

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  • you are right i know this way but i was looking for some other option if its available but it seems its not available though...yes its note book supported with touch and i never used it but my lenovo got overheated and ent out of use so i started using it...thanks for the reply can you please tell me if i continue installing software on other disk say E will my C remains free? or some thing will also be added to C?
    – vampz
    Jun 27, 2017 at 6:45
  • Yes. Windows keeps a installer cache and will install updates. In addition certain installations packages might still install stuff on C:. From my own experience the shared components of Office (as an example) tend to be installed to the C: drive.
    – Seth
    Jun 28, 2017 at 5:35

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