Re: OT: Is there any size limit for ISO's?
Hi Thomas,
> Anyways, 32 GB of size should not be a problem.
Ok. size does not matter
>
> > When the stick is booting, first appear the usual text messages,
>
The first message is the boot prompt. Then the usual messages· PCI found and so
on.
Last message is, that a new USB device is found, then the screen goes blank. I
can make some snapshots of a video, by interest.
> Can you determine the origin of the last visible messages ?
Yes, see above.
> BIOS/EFI ?
The BIOS is without EFI.
> Boot loader (GRUB or ISOLINUX/SYSLINUX) ?
Bootloader is grub, the image is an image from kali linux. The big size comes
from a virtualbox image inside for windows 10. (the vmdk is smaller than 4GB,
so bootcdwrite got not into problems).
> Linux ?
Yes, KALI Linux, which is Debian based.
> Debian installation software ?
vers close to.
>
> Is Virtualbox using the same BIOS type as the real machine ?
> I mean EFI versus Legacy BIOS aka CSM mode.
>
Yes, it uses legacy bios.
>
> Is the USB stick large enough for the image ?
Yes, it is. The image is about 32 GB big, the USB-stick is 64GB. Should fit
very well. The last ISO working was baout 12GB and fit on a 32GB stick.
>
> Can dd read the whole image back from the USB stick ?
>
Yes, it can. I tried also dd with option bs=1, so to install bitwise, just to
make clear everything is copied.
> # Set variable blocks to image file size divided by 2048
> blocks=...
> # Set variable stick to device file address of the USB stick
> stick=...
>
> dd if="$stick" bs=2048 count="$blocks" | md5sum
I already tried thzis, too. 1024, 2048 and 4096, and of course 1.
>
> If no i/o error is reported by dd, compute the MD5 sum of the image file
> and compare both.
>
Already did, comarision was ok.
> It's not impossible. Especially if the stick hardware has problems.
> But depending on the origin of the last visible message there is also
> a chance that boot loader or Linux derail because of buggy file content
> in the elsewise healthy ISO.
>
This stick is new. However, the stck I used before, was another distributor. I
changed the stick, because the former stick I used before, died after about
10th or 12th installing of the iso.
>
> Have a nice day :)
>
Same to you!
Best
Hans
> Thomas
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