Is it a difference where I compile a code?

TomNow99

mrjj

Hi
For that project i think its just its uses win 7 API and that has changed in win 10
so it must be upgraded to work. It uses low level disk access.
I used it a lot in older times.

mrjj

Hi
Sorry i was thinking of
https://sourceforge.net/projects/ext2read/

I never tried the Qt version.

Interresting.

TomNow99

I have to create project which can read linux partitions on Windows 10, but I don't know which function I have to use...

@mrjj I know that is big issue, but I don't have win 10 ( I have win 7 - I have to buy own Win 10 version ) - can you check that ext2read if you have Win10 and tell me is it works?

@mrjj I only want can read from linux partitions - no write

mrjj

Hi
Ok. i would start with
https://github.com/mregmi/ext2read/blob/master/platform_win32.c

and see if it can still detect linux partitions.

if yes then look into ext2.cpp to actually start reading from it.

Just as note. this seems to be read only .
So no writing to the linux file system.

Pablo J. Rogina

@TomNow99 said in Is it a difference where I compile a code?:

I have to create project which can read linux partitions on Windows 10,

I'd say why don't you try to find a library that provides (read) access to ext2/3/4 filesystems from Windows and then you can use this ext2read project as squeleton or guideline given that it has a lot of the GUI already developed...

TomNow99

@Pablo-J-Rogina I searched, but I can't find library c++ to access to ext3 on Windows 10. I see only posts which are very old ( for example 2010 ).

mrjj

@TomNow99
Hi
I only found plug able filesystems
https://sourceforge.net/projects/ext2fsd/
That allows any app to access the linux system but that
is a system driver.

TomNow99

@mrjj We try this in company too.

When windows 10 PRO was updated that Ext2Fsd doesn't work on this system.

If you have Win 10 Enterprise everything is ok.

mrjj

@TomNow99

Ah so 1909 update broke it. ( or later ?)
Also broke my vmware and usb sound speaker and other stuff.
So unless it get fixed for newer versions, its a no go, i guess.

Can i ask a bit about the use case ?
It rarely i see anyone else but me wanting to read linux partitions in Windows :)

TomNow99

We have photos on externals hard drives, which have ext3 file system :)

I don't know which update. I only get information that "When we have update Win 10 Pro that app ( ext2fsd ) stop work now"

mrjj

@TomNow99

ahh that way. And it must be ext3 since what ever writes it can only use that ?
Linux can read / write ntfs fine. But i guess its not an option.

Ok, and it was reinstalled and still not working ?

SGaist

@mrjj said in Is it a difference where I compile a code?:

@TomNow99

Ah so 1909 update broke it. ( or later ?)
Also broke my vmware and usb sound speaker and other stuff.
So unless it get fixed for newer versions, its a no go, i guess.

Can i ask a bit about the use case ?
It rarely i see anyone else but me wanting to read linux partitions in Windows :)

@mrjj Long time ago, dual boot and wanted to avoid the need of a Fat32 partition to share files between Linux and Windows :-D

@TomNow99 did you consider trying the Linux Subsystem for Windows ? Depending on your use case, it might simplify your life.

mrjj

@SGaist
Hehe 100% the same back then. Luckily then came virtualization and life was good.

Hmm actually a good idea with Linux Subsystem for Windows
https://superuser.com/questions/1245210/access-ubuntu-partition-from-windows-sub-system

it should actually be possible from Windows 10 1709+ so that is promising.

But wont his windows program need to run inside Linux Subsystem to actually use it ?
Not sure :)

TomNow99

We have to use disks with ext3 and our customers will have windows :)

mrjj

@TomNow99
ok so asking them to install Linux subsystem might not be an option.

I would go with
https://github.com/mregmi/ext2read
I just tried to compile it with mingw 64 as doc says one MUST use and it just
compiled.
However, i cant say if it works as no linux partions to test with :)

In any case, you can quite easily then try it on your system and debug if it fails and maybe a fix is not that bad.

Pablo J. Rogina

@TomNow99 I guess you may want to take a look at this library: lwext4

Although "The main goal of the lwext4 project is to provide ext2/3/4 filesystem for microcontrollers" documentation also mentions compilation for Windows.

And then take a look at project ext4-browser which relies on that library to provide "a file-archiver like utility which can create, read and modify ext2/3/4 disks and disk images on Windows and Mac OS systems." although the GUI is written using wxWidgets framework.

So getting back to my suggestion, I guess you might combine lwext4 library and the ext2read GUI to achieve your goal...