# Data copied from Windows to Mac

**URL:** <https://discourse.slicer.org/t/data-copied-from-windows-to-mac/21679>\
**Category:** Support\
**Created:** [January 28, 2022, 2:55pm UTC](https://discourse.slicer.org/t/data-copied-from-windows-to-mac/21679 "2022-01-28T14:55:57Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Kim\_Geboers](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/kim_geboers/32/13839_2.png) [@Kim\_Geboers](https://discourse.slicer.org/u/Kim_Geboers)\
**Post date:** [January 28, 2022, 2:55pm UTC](https://discourse.slicer.org/t/data-copied-from-windows-to-mac/21679/1 "2022-01-28T14:55:57Z")

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Operating system: macOS Monterey 12.2  
Slicer version: 4.11.20210226

Dear 3D-Slicer users,  
I recently bought a MacBook Pro and have installed 3D-Slicer without any problems. My previous laptop was a Windows, so I wanted to transfer all my data from Slicer to my MacBook. The problem is, when I open an already completed file (meaning it is segmented etc), it is blank. When I check the “Data” compartment, it is also blank. Is there something extra that I need to download from Slicer (internally in the program) or do I need to convert my data (Windows versus OS)? Or am I forgetting something? I hope you guys can help me!  
Sincerely,  
Kim Geboers

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**Author:** ![hherhold](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/hherhold/32/12199_2.png) [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Post date:** [January 28, 2022, 3:17pm UTC](https://discourse.slicer.org/t/data-copied-from-windows-to-mac/21679/2 "2022-01-28T15:17:14Z")

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I move data between windows and Mac all the time, so there aren’t any file format conversions. Make sure you’ve moved all the files in a project - the mrml file points to the volume, segmentations, models, markups, etc - these are all separate files, unless you’ve saved it as an mrb bundle file.

The documentation has detailed info on files and saving:

[https://slicer.readthedocs.io/en/latest/user\_guide/data\_loading\_and\_saving.html](https://slicer.readthedocs.io/en/latest/user_guide/data_loading_and_saving.html)

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<div class="post-metadata">

**Author:** ![Kim\_Geboers](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/kim_geboers/32/13839_2.png) [@Kim\_Geboers](https://discourse.slicer.org/u/Kim_Geboers)\
**Post date:** [January 28, 2022, 6:29pm UTC](https://discourse.slicer.org/t/data-copied-from-windows-to-mac/21679/4 "2022-01-28T18:29:52Z")

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Thank you very much for your reply! It has been a while since I first installed 3D-Slicer, so I forgot that I had to load the data first… (or choose a directory, which I did before - meaning that I just needed to do this once and put all the slicer data in this trajectory).