Tiny Core Extensions > TCE Tips & Tricks
Howto make a legacy bios/uefi dual boot usb stick with grub2
Dr.FrankenHouse:
--- Quote from: jazzbiker on February 26, 2020, 02:15:45 PM ---Hi, Dr.FrankenHouse!
I am writing this post from the very old ASUS netbook with 32-bit Atom, Z520, booting from USB flash drive, cooked according to Juanito recipe. Here i load using "core" entry. And the same stick i boot 64-bit laptop in both modes - core64 and corepure64.
So Juanito's installation instructions are perfect and You can rely on them absolutely.
--- End quote ---
I never doubt about juanito's instructions. As I wrote, first thing I thought was "ok, I made a mistake".
--- Quote from: jazzbiker on February 26, 2020, 02:15:45 PM ---Maybe You missed, that on the 32-bit hardware You can select only "core" entry? Be carefull with UUID's defined.
Good luck!
--- End quote ---
The problem is that boot menu doesn't came out,it starts directly the boot menu installed on ssd in the netbook.
It's like the pc doesn't recognize usb stick (but bios does).
--- Quote from: Rich on February 26, 2020, 02:16:23 PM ---Hi Dr.FrankenHouse
--- Quote from: Dr.FrankenHouse on February 26, 2020, 01:21:35 PM --- ... I tried to boot my netbook (cpu atom 32bit) ...
--- End quote ---
Are you sure? Atoms came in both 32 and 64 bit. I have an old ASUS T100-CHI tablet that has a 64 bit Atom but 32 bit UEFI firmware.
I also found out this tablet would not boot a 32 bit kernel so I used vmLinuz64 with Core64 (not CorePure64) so I could still run
32 bit applications since this tablet only has 2 Gig of RAM.
--- End quote ---
Unfortunately I'm pretty sure, it's an Asus eeepc 1005ha with Atom N280
Rich:
Hi Dr.FrankenHouse
--- Quote from: Dr.FrankenHouse on February 26, 2020, 04:51:09 PM --- ... The problem is that boot menu doesn't came out,it starts directly the boot menu installed on ssd in the netbook.
It's like the pc doesn't recognize usb stick (but bios does). ...
--- End quote ---
I had that same issue with the tablet. I had to go into the BIOS and turn off secure boot and place grub as option #1 under
Boot Option Priorities.
Dr.FrankenHouse:
Hi,
I performed a new installation on a new USB stick.
This time netbook recognize it!
But I have another problem when starts grub:
--- Code: ---error: unknown filesystem
Entering rescue mode...
--- End code ---
I tried on several computers (both with uefi and with legacy) and I did the installation of the USB stick several times.
In attachment a screenshot of fdisk
I don't know if the problem could be that I install it by running tc on virtualbox hosted by Windows
jazzbiker:
Hi, Dr.FrankenHouse!
You're right, it's better to make bootable media without the use of VM. There are a lot of issues on the forum about some software working slightly different if run under one of the various VMs.
If it is possible, try to make bootable media under the running "real" TinyCore. If it is not possible, use some other "real" Linux.
Good luck!
Rich:
Hi Dr.FrankenHouse
This is the procedure that worked for me
http://forum.tinycorelinux.net/index.php/topic,22848.msg143377.html#msg143377
If memory serves, using a GPT partition was necessary in my case.
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