# I used balena etcher to flash os in my Pen drive(usb stick)

**URL:** <https://forums.balena.io/t/i-used-balena-etcher-to-flash-os-in-my-pen-drive-usb-stick/368536>\
**Category:** balenaEtcher\
**Created:** [August 10, 2023, 12:45pm UTC](https://forums.balena.io/t/i-used-balena-etcher-to-flash-os-in-my-pen-drive-usb-stick/368536 "2023-08-10T12:45:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![boxer\_4](https://avatars.discourse-cdn.com/v4/letter/b/a4c791/32.png) [@boxer\_4](https://forums.balena.io/u/boxer_4)\
**Post date:** [August 10, 2023, 12:45pm UTC](https://forums.balena.io/t/i-used-balena-etcher-to-flash-os-in-my-pen-drive-usb-stick/368536/1 "2023-08-10T12:45:58Z")

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I used Balena etcher to flash os in my Pen drive(usb stick) But problem is after flashing whole pen drive becomes unallocated and it deletes EFI partition Too!!! Please help me!!

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**Author:** ![alanb128](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/alanb128/32/2839_2.png) [@alanb128](https://forums.balena.io/u/alanb128)\
**Post date:** [August 11, 2023, 6:43pm UTC](https://forums.balena.io/t/i-used-balena-etcher-to-flash-os-in-my-pen-drive-usb-stick/368536/2 "2023-08-11T18:43:05Z")

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Hello, what OS image are you trying to flash? (Feel free to provide a link.) If you want to reclaim space on your pen drive, check out this blog post: [Etcher broke my USB stick … or did it?](https://blog.balena.io/did-etcher-break-my-usb-sd-card/)