Page 7 of 7
Re: How to Flash a New USB Initboot for TOS on Windows PC？
Posted: 24 Jun 2026, 16:12
by User009
Gremlin wrote: ↑24 Jun 2026, 14:31
-425 models do not use the traditional plug-in usb flash drive. They use a daughter-board flash card mounted on the motherboard (USB-DOM).
Code: Select all
What it Does in Your F4-425The Hardware:
It is a tiny, proprietary daughter board attached to an internal USB header via a standoff and secured with a single screw.
The Function:
It contains a small amount of flash memory (historically 1GB–4GB, but updated to a compact ~250MB Flashdisc in the 425-series). Its sole purpose is to store the lightweight initboot / bootloader for TerraMaster's TOS operating system.
That's good to know! Is there a possibility to reflash it, in case it gets corrupted (or overwritten by third-party operating systems)?
Re: How to Flash a New USB Initboot for TOS on Windows PC？
Posted: 24 Jun 2026, 16:41
by Gremlin
Standard mainboard USB plug (varieties available on-line) - Picture here:
viewtopic.php?p=55280&hilit=usb+dom#p55280
Re: How to Flash a New USB Initboot for TOS on Windows PC？
Posted: 24 Jun 2026, 16:47
by User009
Great! This should be much more reliable. Is there an image avaliable to download, if this module was overwritten?
Re: How to Flash a New USB Initboot for TOS on Windows PC？
Posted: 24 Jun 2026, 20:56
by MikeZhang
Re: How to Flash a New USB Initboot for TOS on Windows PC？
Posted: 25 Jun 2026, 00:14
by Gremlin
That posted file link appears to be the same file as linked in the original post in this thread - ie
Tos 6 UEFI 150MB
I don't know if that will use Tos7 as a default, given that on-line update from 6 -> 7 is not yet available. Maybe a Tos7 version will be made available in due course.
Re: How to Flash a New USB Initboot for TOS on Windows PC？
Posted: 11 Jul 2026, 17:22
by obvious
Hello, Is there a new initboot image for TOS7 yet?