View source for UnRAID 6/Changing The Flash Device

[[Official_Documentation#Unraid_Server_OS_6.x|Official Documentation Contents List]]

==Replacing your Unraid USB Flash Device and Registration Key==
There are two methods to use for swapping out your USB flash device.  If you are using a PC or Mac, you should use the USB Flash Creator tool for the easiest and most streamlined experience. However in the event, this tool doesn't work for you, or you are using a Linux system, then please use the legacy method instead.

In either case, you will you will first need to have a full backup of your original Unraid OS USB flash boot device. (It is highly recommended that you always have an up to date backup of your Unraid USB flash device.)
*This is done by going to the main tab in the Unraid webGui then clicking on 'Flash'.
*From here you will see the option 'FLASH BACKUP', click this and a full zipped backup of your current flash drive will be downloaded to your Mac or PC.


[[File:Backup flash drive.png|800px]]


===Why replace your USB Flash boot device?===
There are a number of different reasons for which you may wish to replace your USB flash device running Unraid OS:

*Current device is failing
*Current device has failed, is lost or broken
*Current device physically too large
*Current device too slow or not enough storage
*Current device just getting old

Prior to replacing the current flash, it may be worthwhile to shut down your server, remove the flash, and insert it into a Windows or Mac computer.  Using Windows scandisk or Disk Utilities in Mac, you should be able to try to "repair" the existing flash.  If this operation works, you may want to consider continuing use of the flash.  If you've done this before and are still having issues with your flash, then replacement is probably necessary.

===What if I can't backup my device?===

In the event that your flash device has failed and you do not have a backup, you can still reconfigure Unraid onto a new flash device and transfer your registration key to that device.  Simply install Unraid to a new flash drive using the normal process and then either 'Install' your old key file, or equivalently, copy it to the 'config' directory on your USB flash device.  The server will then notice a GUID mismatch and offer a Replace Key button the Tools/Registration page.

To ensure no data loss after the server is booted, you will need to make sure you assign each disk to the array / cache exactly as it was prior to the failure.  If you do not know which disks were assigned where, create a post in the forum for further assistance.

===Changing a Flash Device Before Purchasing===

If you're currently using a Trial key and you're ready to purchase, you may want to use a better flash drive for your paid key.  Perform the same steps in this guide for replacing the flash and when done, purchase a registration key from the Tools > Registration page.

'''NOTE''': Once you transfer a Trial configuration to a new flash device, you will be unable to start the array until you purchase a valid registration key (Trial keys can only work on the original device to which they were registered).**

===Using the Flash Creator===

*Once you have a backup of your Unraid flash device, you will need to use the Unraid USB Flash Creator tool to restore your backup to the new USB flash device. This can be downloaded for Windows or MacOS from here   ....  [https://unraid.net/download Download USB Creator]


[[File:Usbcreator.png|300px]]


*Obtain a new good quality USB flash device. This should be at least 1 GB (8GB or 16GB seem to be popular choices).  USB2 is fine and anecdotally has proved more reliable.
*Plug it into your computer and then run the Unraid USB Creator software. 
*Select the version 'Local Zip' then browse to the location of the backup that you created earlier and open that. 
*Next, make sure that you select your new USB Flash device for the destination, then click ''''Write'''' and your backup will be restored to the new USB flash device.


[[File:Selectversion.png|400px]]


*Shutdown the server. Remove the original USB flash device and replace it with the new one created above. Power on the server.
*Once booted the array will not start and you will see the message 'Invalid, missing or expired registration Key' Click 'registration Key'


[[File:Invalidkey.png|800px]]


*Click on the option to 'REPLACE KEY' * Then enter the email address to which you would like to have the new key delivered to. 
*Click 'REPLACE KEY'


[[File:Replacekey.png|800px]]


*Once you have received the email, copy the key file URL, then paste it into the box and click 'INSTALL KEY
*Finished! You have replaced the USB flash device and the registration key. You will see a screen showing the date this key was registered and the next date on which your registration key will be eligible to be replaced again. Click 'DONE'

===Manual Method (Legacy)===

====Legacy method - Windows and MacOS====


*Obtain a new good quality USB flash drive. This should be no less than 1 GB and no more than 32 GB in size. Plug it into your computer
*Format the USB flash device as FAT32 with MBR partition and label the drive UNRAID (in capitals)
*Extract the contents of your Unraid USB device backup and then copy and paste them into the root of the USB flash device labeled UNRAID.
*You will see 3 files called ''make_bootable'', one for running on Windows, Mac, and Linux. Choose the one appropriate to your operating system.

*''make_bootable.bat''  is to be run on Windows as administrator. This will make the USB flash device bootable.
*''make_bootable_mac''  is to be run on MacOS. This will make the USB flash device bootable.

*Shutdown the server. Remove the original USB flash device and replace it with the new one created above. Power on the server.
*Once booted the array will not start and you will see the message 'Invalid, missing or expired registration Key' Click 'registration Key'


[[File:Invalidkey.png|800px]]


*Click on the option to 'REPLACE KEY' * Then enter the email address to which you would like to have the new key delivered to. 
*Click 'REPLACE KEY'


[[File:Replacekey.png|800px]]


*Once you have received the email, copy the key file URL, then paste it into the box and click 'INSTALL KEY
*Finished! You have replaced the USB flash device and the registration key. You will see a screen showing the date this key was registered and the next date on which your registration key will be eligible to be replaced again. Click 'DONE'

====Legacy method - Linux====

*Obtain a new good quality USB flash drive. This should be no less than 1 GB and no more than 32 GB in size. Plug it into your computer
*Format the USB flash device as FAT32 with MBR partition and label the drive UNRAID (in capitals)
*Extract the contents of the flash backup to a folder on your desktop or any location of your choice.
*Copy contents of the folder and paste them into the root of the USB flash device labeled UNRAID.
*Close the file browser window that has the USB flash device open in it.
*Goto the folder from where you just copied the files which you just pasted to the USB flash device.
*Open terminal and type 
 sudo bash
*Now drag the file ''make_bootable_linux'' from that folder into the terminal window next to what you typed in the last step. Hit enter.
*Enter sudo password
*Follow the prompts
*If the process should fail with the message  
 sudo: /tmp/UNRAID/syslinux/make_bootable_linux.sh: command not found
*Run the script a second time and this time it will complete. This will make the USB flash device bootable
Example

[[File:Linuxinstall.png|800px]]


*Shutdown the server, remove the original USB flash device and replace it with the new one created above, then power on the server.
*Once booted the array will not start and you will see the message 'Invalid, missing or expired registration Key' Click 'registration Key'


[[File:Invalidkey.png|800px]]


*Click on the option to 'REPLACE KEY' * Then enter the email address to which you would like to have the new key delivered to. 
*Click 'REPLACE KEY'


[[File:Replacekey.png|800px]]


*Once you have received the email, copy the key file URL, then paste it into the box and click 'INSTALL KEY
*Finished! You have replaced the USB flash device and the registration key. You will see a screen showing the date this key was registered and the next date on which your registration key will be eligible to be replaced again. Click 'DONE'

==Notes about replacing your registration key==
You may replace your original registration key at any time. 
Having replaced your key once, you may next replace your key after a further period of 12 months. Should you need to replace it again within that 12 month period, then please send an email to support@lime-technology.com to discuss your options.