Lightroom Classic: Need to free up Hard drive space but can't find files to remove

Question

I am using Lightroom Classic 14.4I moved LC to my D drive but my C drive is still be used up. How do I find and remove LC files from my C drive?  Lightroom Classic version: 14.4 [ 202506051112-5918896a ]License: Creative CloudLanguage setting: enOperating system: Windows 11 - Home Premium EditionVersion: 11.0.26100Application architecture: x64System architecture: x64Logical processor count: 12Processor speed: 3.6GHzSqLite Version: 3.36.0CPU Utilisation: 1.0%Power Source: Plugged InBuilt-in memory: 16314.1 MBDedicated GPU memory used by Lightroom: 30.9MB / 12115.0MB (0%)Real memory available to Lightroom: 16314.1 MBReal memory used by Lightroom: 717.6 MB (4.3%)Virtual memory used by Lightroom: 1101.1 MBGDI objects count: 748USER objects count: 2507Process handles count: 2668Memory cache size: 0.0MBInternal Camera Raw version: 17.4 [ 2272 ]Maximum thread count used by Camera Raw: 5Camera Raw SIMD optimization: SSE2,AVX,AVX2Camera Raw virtual memory: 13MB / 8157MB (0%)Camera Raw real memory: 16MB / 16314MB (0%) Cache1: NT- RAM:0.0MB, VRAM:0.0MB, Combined:0.0MB Cache2: m:0.0MB, n:0.0MB U-main: 112.0MB System DPI setting: 144 DPI (high DPI mode)Desktop composition enabled: YesStandard Preview Size: 3840 pixelsDisplays: 1) 3840x2160Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No Graphics Processor Info: DirectX: NVIDIA GeForce RTX 3060 (32.0.15.7602)Init State: GPU for Export supported by defaultUser Preference: AutoEnable HDR in Library: OFF Application folder: C:\Program Files\Adobe\Adobe Lightroom ClassicLibrary Path: D:\Photography\Lightroom\Lightroom Catalog.lrcatSettings Folder: C:\Users\angel\AppData\Roaming\Adobe\Lightroom Installed Plugins: 1) AdobeStock2) Flickr Config.lua flags:  Adapter #1: Vendor : 10deDevice : 2504Subsystem : 40721458Revision : a1Video Memory : 12115Adapter #2: Vendor : 1414Device : 8cSubsystem : 0Revision : 0Video Memory : 0AudioDeviceIOBlockSize: 1024AudioDeviceName: System Default - Speakers (High Definition Audio Device)AudioDeviceNumberOfChannels: 2AudioDeviceSampleRate: 48000Build: LR5x26Direct2DEnabled: false

Anshul_Saini · Answer

Hi @angela_1815,

Thanks for reaching out. I completely understand how confusing and frustrating it can be when your C: drive keeps filling up even after you move Lightroom Classic to another drive. Let’s see if we can sort this out together.

• One common reason this happens is that Lightroom still keeps some important files, like preview data, on your C: drive even after the catalog has been moved. You can check the following folder on your system:

C:\Users\angel\Pictures\Lightroom

Inside, you might find files or folders such as “Lightroom Catalog Previews.lrdata” or “Smart Previews.lrdata,” which can grow quite large. These files store thumbnail and smart preview data. If you’re no longer using this folder actively, they might just be leftovers from before the move.

• Another place Lightroom may still be using space is your settings folder:

C:\Users\angel\AppData\Roaming\Adobe\Lightroom

• Also, double-check the D:\Photography\Lightroom folder where your new catalog is located to make sure all associated files (like previews) were moved there too. Sometimes only the .lrcat file gets moved, and the previews are left behind.

If you’re unsure what files are safe to delete, just let us know what files you’re seeing and their sizes, and we’ll gladly guide you further.

And just in case you want to review the steps for moving a Lightroom catalog, you can refer to this article:

https://adobe.ly/44zVGPm

We’re here to help and’ll ensure you get back the space you need!

Best,

Anshul Saini

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