# USB flash or TF Card as overlay

**URL:** <https://forum.gl-inet.com/t/usb-flash-or-tf-card-as-overlay/15520>\
**Category:** Router\
**Created:** [April 26, 2021, 5:46pm UTC](https://forum.gl-inet.com/t/usb-flash-or-tf-card-as-overlay/15520 "2021-04-26T17:46:54Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Tak13](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/t/b3f665/32.png) [@Tak13](https://forum.gl-inet.com/u/Tak13)\
**Post date:** [April 26, 2021, 5:46pm UTC](https://forum.gl-inet.com/t/usb-flash-or-tf-card-as-overlay/15520/1 "2021-04-26T17:46:54Z")

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Hello Gurus,

I was just wondering, once additional memory (USB or card) is set as overlay memory, will it unmount if a factory reset is performed, or if a future update (or even reload of current) is performed without keeping settings?

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**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\
**Post date:** [April 27, 2021, 3:39am UTC](https://forum.gl-inet.com/t/usb-flash-or-tf-card-as-overlay/15520/2 "2021-04-27T03:39:59Z")

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you are right. You need to set up again if you do that.

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**Author:** ![Tak13](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/t/b3f665/32.png) [@Tak13](https://forum.gl-inet.com/u/Tak13)\
**Post date:** [April 27, 2021, 11:46pm UTC](https://forum.gl-inet.com/t/usb-flash-or-tf-card-as-overlay/15520/3 "2021-04-27T23:46:23Z")

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@alzhao - thanks for the response!

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**Author:** ![bruce](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bruce/32/35649_2.png) [@bruce](https://forum.gl-inet.com/u/bruce)\
**Post date:** [October 29, 2025, 4:13am UTC](https://forum.gl-inet.com/t/usb-flash-or-tf-card-as-overlay/15520/4 "2025-10-29T04:13:40Z")

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