topic Re: simple question about ISOmorphic in General Topics

simple question about ISOmorphic

RemoteUser — Fri, 27 Jun 2025 08:25:42 GMT

Hi,

I saw that ISOmorphic does not support USB 3.0 devices (only USB 2.0).
However, my appliance only has USB 3.0 ports and I want to perform a fresh install.
How can I proceed in this case?

Re: simple question about ISOmorphic

_Val_ — Fri, 27 Jun 2025 08:29:44 GMT

The compatibility is about media, not ports. USB 2.0 thumb drives will work with USB 3.0 ports.

Re: simple question about ISOmorphic

RemoteUser — Fri, 27 Jun 2025 08:39:12 GMT

so i can use usb3.0 with isomoprhic tool? or it's better if use usb2.0? thank

Re: simple question about ISOmorphic

Chris_Atkinson — Fri, 27 Jun 2025 11:39:05 GMT

sk65205 answers your question - USB2.0

ISOmorphic tool does not support USB 3.0 devices (use only a USB 2.0 device).

Re: simple question about ISOmorphic

the_rock — Fri, 27 Jun 2025 12:38:19 GMT

Hey bud,

As @Chris_Atkinson indicated, it clearly states that in the sk, so I would certainly use only 2.0

Andy

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ISOmorphic tool does not support USB 3.0 devices (use only a USB 2.0 device).

Re: simple question about ISOmorphic

Bob_Zimmerman — Fri, 27 Jun 2025 19:40:11 GMT

ISOmorphic works fine with USB 3 drives. It just writes to a raw block device. In fact, since it doesn't interact with the hardware directly, it doesn't have any way to tell if the drive is connected via USB 2, USB 3, FireWire, or SATA. It's even perfectly happy to write to an SD card in a PCIe adapter (no USB in the path).

In my experience, the only real limitation with ISOmorphic and USB 3 drives is related to the complexity of bootstrapping an x86/amd64 computer. Generally, a server which ships with a USB 3 controller on the motherboard also ships with a boot ROM which knows how to get a boot block from a device connected to a USB 3 controller. The boot block has the boot ROM get a kernel image from the device connected to the USB 3 controller using the boot ROM's drivers. Unfortunately, it's possible for the kernel image loaded in this way to lack drivers for the USB controller, so it fails to pull the rest of the data. This manifests as the installer being unable to find its own installation media.

Check Point has shipped extremely old kernels for a long time. Versions of Gaia up through R80.20 (released 2018-09-26) used kernel 2.6.18 (from 2006-09-20) which predates USB 3 (the standard was released 2008-11-17, with the first devices shipping over a year later), so it obviously doesn't have drivers to run USB 3 controllers. R80.30 (released 2019-05-07) started the transition to kernel 3.10 (from 2013-06-30), which finally added USB 3 drivers (most firewalls still used 2.6.18 until R80.40, in 2020-01-28). Now, R82 (released 2024-10-21) uses kernel 4.18 (from 2018-08-12), which has support for NVMe, among other things.

Re: simple question about ISOmorphic

the_rock — Fri, 27 Jun 2025 19:45:45 GMT

Im pretty sure it works, but if vendor does not support it, I would not bother.

Andy

Re: simple question about ISOmorphic

Bob_Zimmerman — Fri, 27 Jun 2025 19:54:15 GMT

Nobody remotely reputable has sold USB 2 drives in years.

Re: simple question about ISOmorphic

the_rock — Fri, 27 Jun 2025 19:57:37 GMT

There are bunch of them on Amazon.