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Race condition in sdcard/os/hypriotos.sh #142

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Race condition in sdcard/os/hypriotos.sh #142

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taylorsmcclure
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Adding a sleep for one second as buffer for using this in a higher latency environment such as on a VM. For example if you are using USB emulation pass through from bare metal not having a buffer will result in a race condition. You will receive a device does not exist error:

mount: special device /dev/sdb2 does not exist

Race condition found on:

Virtualized OS: Ubuntu 16.04 LTS
Virtualization Method: Virtualbox
USB Device: Transcend USB3.0 SD card reader
Host OS: Windows 10

@taylorsmcclure
Update sdcard/os/hypirotos.sh
ac5a5cf 
Adding a sleep for one second as buffer for using this in a higher latency environment such as on a VM. If you are using USB emulation pass through from bare metal not having a buffer will result in a race condition.
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