# COSMOS won't work with external hard drives?

**URL:** <https://forum.waves.com/t/cosmos-wont-work-with-external-hard-drives/5255>\
**Category:** Support\
**Created:** [April 18, 2022, 4:17pm UTC](https://forum.waves.com/t/cosmos-wont-work-with-external-hard-drives/5255 "2022-04-18T16:17:02Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![ShayWaves](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.waves.com/shaywaves/32/756_2.png) [@ShayWaves](https://forum.waves.com/u/ShayWaves)\
**Post date:** [May 10, 2022, 12:13pm UTC](https://forum.waves.com/t/cosmos-wont-work-with-external-hard-drives/5255/5 "2022-05-10T12:13:54Z")

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Hi @gypsymoth

Please note that in order for COSMOS to scan a sample, the following conditions must be met:

1. The sample is in one of the supported formats: WAV, AIF, OGG, or FLAC (MP3 is not supported at this time)
2. The sample has to be 60 seconds or less
3. The sample’s sample rate has to be 44.1kHz-96kHz.

If some of your samples don’t meet these conditions, it could explain why you don’t see them listed in COSMOS.

If the issue persists, follow the steps below:

1. Quit COSMOS (also from the upper system toolbar icon: ![MicrosoftTeams-image (5)](https://audiowave2ndorg--c.documentforce.com/file-asset-public/MicrosoftTeamsimage_5?oid=00D3h000004b3v1 "MicrosoftTeams-image (5)"))
2. Go to **Applications \> Utilities** and launch Activity Monitor.
3. Locate the process named **WavesPluginServer** and end it.
4. In Finder, click on the **Go** menu, hold **[Alt/Option]** and click on **Library**.
5. Go to **Application Support \> Waves Audio \> Waves Plugin Server**.
6. Delete the file named **cosmos.sqlite.**
7. Launch COSMOS and rescan your sample folders.

- Please make sure to scan the root directory of your samples and not any of its subfolders.

I hope this info will assist, have a nice day. 🙂

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