How to Delete C Drive Data after Installing New SSD to New Drive?
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Hello there,
I have installed WD Blue SN550 250GB NVMe SSD to My Dell Vostro 3480 Laptop (Intel i3 – 8th Generation,1TB HDD and 4GB RAM, Windows 11 OS -Microsoft Official Update)
Now, First of all, I made the connection properly after that, I have given a Name to my SSD (D- Drive) and then Migrated (CLONE- Whole C Drive Data such as OS Files and Softwares! After Successful completion, I set up the Boot Loader to NVME SSD (WD) and Now, My Laptop is Running from WD SSD New Drive (D- Drive) and not C- Drive but what to do the space of C- Drive? 199GB is there and “We already know that we cant format or delete C- Drive” Now, tell me how to do it? or any other relevant suggestions!
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Here are the images- Pardon me for the image quality
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This may help
Not helping!
Its only for Windows.old folder and also just now tried and there is no windows.old file showing in Disk Cleanup!
So from you screenshot I can see that your SSD is your boot drive and the C: partition is your actual boot drive which you cannot delete.
Your D: is your old hard disk boot drive which you can delete safely and use it.
Refer to the image below.
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So, you mean C Drive (OLD HDD) and D Drive (New SSD) OS Files exchange and the file which I should delete is D (OLD HDD Right?)
C drive for a pc is the drive from which windows is running from at that moment so at this time your ssd drive which you initially named D is the C drive from laptop’s point of view & the original C drive in your hdd is currently D drive in laptop’s eyes because windows is not running from there & you can do anything to this D drive just like any other normal drive.
You are absolutely correct sir!
But,How to delete C Drive (HDD – Old C Drive)
It is not allowing to delete
Do not delete the C drive that is showing in your pc, that is now your new ssd boot drive.
You need to format the drive which is now showing up as D (which is your old hard disk c drive that you wanted to delete.)
Check my previous comment and refer to the image on what you can delete.
got this popup , after pressing format d drive
should I go ahead
KG+ given to @pankajsammal 
@guest_999 DD is not allowing me to give you kg+ 
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You are a bit worried about the extra 100 mb partition. See, in Windows two types of partition schemes are supported. 1) traditional MBR type. In MBR type you have maximum of 4 primary partitions. It can be easily made by diskpart commands. 2) UEFI allowed PC to overcome limitations of MBR. It allowed support for HDDs of size more than 2TB and it also allowed creation of partitions more than 4. 🙂 But downside is it can’t boot from NTFS drives. For bootable partition i.e. boot drive where bootloader resides we need FAT32 partition. That 100 MB is FAT32 partition.
Your bootable USB drive is of GPT scheme. If it was MBR type then also 100 MB partition would have been created, which could be easily mitigated using diskpart. 🙂
Diskpart can delete the old partition’s drives. 🙂 Please enable secure boot and please allow recovery of bios from HDD. 🙂
EDIT- WHEN RESTARTED THE SYSTEM, NOW ERROR CODE – 0xc0000225 is showing!
Go to recovery environment and run system restore (hopefully its ON for the “C” Drive)
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You can format your C drive safely if it is not the boot drive. (there is no such thing as you cannot delete c drive, the rule is you should NEVER FORMAT YOUR BOOT DRIVE ) which can be anything.
To delete your old hard disk partition.
Right click on your computer icon ( This PC) in windows 10-11 and click manage, then go to disk management, check and verify the hard disk for the partition you want to delete(199gb in your case). Verify that it is not marked as boot in disk management (if it is marked as boot then you are booting off hard disk and not ssd, fix it) If is is not marked as such then you can just format it and it will be fine.
(Do not format any drive you can’t see in your file explorer and you are not sure about)
If you want more help just upload a screenshot of your disk management page and we can exactly tell you what drives are safe to format.