ReadyNAS internal flash/USB

Question

What is the internal USB and/or flash structure? How does the boot process work? Here is what read from small net builder review abut 626x :

256 MB USB module with Phison USB 3.0 controller and Toshiba TC58NVG1S3HTA00 2Gb NAND flash

Is it the USB is one actually being booted from? The NAND is for storage of firmware, and is not involved in the booting at all?

Appreciate if someone can explain the boot process and function of each component.

If I manage to make an image of the USB part, can I boot a non netgear hardware and convert it to a Readynas?
Thank.

Sandshark · Answer

The ReadyNAS used syslinux for booting, and the syslinux boot data is on the flash.&nbsp; But in normal mode, that boot sends it to the OS partition of the drives for the actual booting.&nbsp; Other modes either put an image from flash into RAM and boot that or boot a USB device.&nbsp; The flash also contains a default OS image used for an OS re-install.&nbsp; In the case of a legacy device, the flash also includes the vpd file, which identifies your NAS type and serial number.&nbsp; None of your personal or configuration data is stored in flash -- it's all on the drives.

tigerten · Answer

Thanks. It is useful.&nbsp;&nbsp;I got the image. It does not work.&nbsp;&nbsp;RAIDar shows the NAS status is TFTP_REQ&nbsp;It was tryin gto extract rot image, but ERROR: could mount boot flash [/dev/null1] no such file or directorycommand failed: mdev -scommand failed: /usr/sbin/telnetd

Sandshark · Answer

Sounds like you need to do a USB recovery:&nbsp;How-do-I-use-the-USB-Recovery-Tool-on-my-ReadyNAS-OS-6-storage-system&nbsp;

tigerten · Answer

Sorry I was writing on cellphone.&nbsp;&nbsp;my 628x is okay. I made an image of the internal USB and burned the image to USB flash, then boot my PC with that USB. I got the above error. I guess that is because there is no flash drive as a real readynas does.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

Sandshark · Answer

ReadyNAS OS checks that it is running on Netgear hardware and will not boot on anything else except a VM with very specific limitations.&nbsp; If you want to study the OS, you are going to need to use Linux tools, not Windows.&nbsp; I recommend you use a VM, not a real NAS:&nbsp;Creating-an-instance-of-Raidiator-6-10-8-as-a-virtual-machine&nbsp;

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ReadyNAS internal flash/USB

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