I have lost some very important files on Azure temporary folder /dev/sdb1/mnt Is there anyways I can recover it.
Any pointers ?
There is no way to recover any data from the temporary drive. Every VM contains a temporary disk, which is not a managed disk. The temporary disk provides short-term storage for applications and processes and is intended to only store data such as page or swap files. Data on the temporary disk may be lost during a maintenance event or when you redeploy a VM. During a standard reboot of the VM, the data on the temporary drive should persist. However, there are cases where the data may not persist, such as moving to a new host. Therefore, any data on the temp drive should not be data that is critical to the system.
https://docs.microsoft.com/en-us/azure/virtual-machines/windows/managed-disks-overview
Temporary disk data always lose when you are going to reboot the server so there is no way to recover any type of the store in temporary disk after reboot.
Is there a way to recover data from the temporary drive? There is no way to recover any data from the temporary drive.
What should I do to store data that I cannot afford to lose? You can attach a data disk to the virtual machine to store data that you cannot afford to lose. OS disk and data disks are persistent storage. More information on data disks here.
Find more understanding on temporary drive.