Hi!

I asked this some time ago and it wasn't possible.
Has this changed?
Is there a way for me to fetch my OS4 files stored on an SFS/JXFS HD through Windows or MacOS?

The files are there for more than a year, unacessible... ;(

@BrandonLee

UAE maybe!

Petrol.

@BrandonLee

If by any chance these are private amateur multimedia porn files, you can sent me the HD, I will connect it to my Sam, burn the data on a CD/DVD and sent it back to you.

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@BrandonLee

Windows and MacOS - unlikely
Linux - understands RDB and FFS (and SFS according to a quick Google). A Ubuntu live CD should do the trick if you don't have Linux installed anywhere.

It'll be better to put it into an OS4 machine though and copy the data off (and that's probably the only way to recover the JXFS partition)

Last edited by Chris_Y on 13-Feb-2013 at 02:55 PM.

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"Miracles we do at once, the impossible takes a little longer" - AJS on Hyperion
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@BrandonLee

SFS/00 only . Aros can read this.
You need to hook up with someone with a working NG Amiga to recover anything else.

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@Cool_amigaN

Unfortunately, I never managed to get far in amateur porn, so no, there are no such files there... ;)

@Chris_Y

I have no access to an OS4-capable machine, so no luck there.


Is it technically impossible (I doubt it)?
Is there no one interested in this?
Or is it a case of simply not having enough coders out there to solve "all" problems?

@BrandonLee

Quote:

Is it technically impossible (I doubt it)?

No. As I say, you can do it on Linux already provided you're using FFS or SFS (probably original versions of both). The source code for newer incarnations and JXFS isn't available, which makes it more difficult to support those.

Windows will never be able to do this, the disk and filesystem interface is rubbish (and it doesn't understand RDB partitions, and probably can't be made to do so), nobody is going to attempt it except as a low-level disk scanner/recovery tool (which would probably have to run outside Windows anyway, and has such limited use that it is unlikely anybody would expend any effort on it)

Quote:

Is there no one interested in this? Or is it a case of simply not having enough coders out there to solve "all" problems?

Probably those too. You could study JXFS partitions and work out how it stores data, and write a Linux filesystem. I doubt there is anybody sufficiently interested in doing this with enough time and knowledge.

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"Miracles we do at once, the impossible takes a little longer" - AJS on Hyperion
Avatar is Tabitha by Eric W Schwartz

@Chris_Y

Don't put an Amiga disk anywhere near a Windows machine. The RDB will actually be messed up as soon as the machine boots up. Unless by some miracle this has been fixed since last time I was stupid enough to do it...

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@olegil

This only happens on DOS-based operating systems (up to WinME). NT-based systems don't do this. You need an NT system to access Amiga disks anyway.

WinUAE does not support anything below WinXP any more anyway, so the danger is minimal.

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@BrandonLee

Perhaps the question might be better put as:

"Is there any way to read Amiga volumes on Windows or Mac?"

The answer is no, Windows and Mac do not support Amiga filesystems. Amiga does support some basic Windows filesystem (FAT32), so you could send your disk to a good friend with an NG Amiga and ask him/her to convert the contents to FAT32. He/she would have to copy all the files to another volume, format your disk as FAT32 and then copy all the files back onto it.

It could be done, then you could read the files on almost anything.

There must be someone close enough to do it for you. There are a couple of betatesters with the necessary skills in Spain.

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tony

Hyperion Support Forum: http://forum.hyperion-entertainment.biz/index.php

@tonyw

I would expand on this and state that Windows and Mac OS are incapable of recognizing any form of Amiga HDD prepared as RDSK marked RDB.

Windows will insist on preparing (overwriting the RDB structures...) a PC-MBR partition scheme with BIOS support enabled

AROS will be the only "safe" option for reading and writing FFS/SFS compatible with 680x0 machines.

Linux is capable in a very limited way

@BrandonLee:

I currently have the reverse problem of needing to read/write a reiserfs prepared HDD from Linux using AmigaOS 4.1u6+

I am also capable of writing a Filesystem however such an undertaking has been difficult for me in the past on an A4000 with OS3.x installed so I am reluctant to try again without being able to get help

I understand some low level system details.... however admit that device drivers and filesystems have details missing in what I know about them

Oldies & goldies...
A friend of mine once said he masters win95 so that he never needs to reinstall it. I had copied my Amiga files to FAT formatted HDD with AOS4. When we tried to put the hdd to his win box (for burning amigafiles to CD), the system enetered in state that it did not boot up any more, he had to reinstall win95.
I woul never ever try to put any Amiga HDD drive to win box.

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// For freedom, for honor, for AMIGA
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@BrandonLee

Another possible option is setting up an Amithlon machine but then you need to locate it and a compatible PC. AROS could be the best bet as it most likely will understand modern file systems. SFS anyway.

What sort of files do you need to recover? Just generic files? As if it was Amiga files you would need to retain the Amiga attributes.

The best bet would be another OS4 machine. But even then it would cost hundreds even if something like an A1SE is worth next to nothing.

@thomas

I'm fairly certain it happened to me on XP professional at work. I had a dual-boot with Linux (which is where I do actual work) and was using Linux to access it, possibly to copy over some stuff for my Amithlon installation. After booting Windows to play a game before going home in the evening I was in no end of trouble. Well, not really, as I was also able to repair using amiga-fdisk, but still. Not exactly fun.

Unless I completely misremember the whole story and the broken RDB happened at a different point. I've never had a DOS-based machine, though.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@Hypex

Another option:

Have a good internet connection (or a DVD-burner) and Linux.
Find someone who also has a good internet connection (or a DVD reader), Linux, AOS4 and a spare harddrive.

Make binary images of harddrive in Linux, send to partner who writes to spare HD, mounts under AOS, extracts files and sends back.

Yes, hassle. But perfectly doable.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@Hypex

The files are mainly holiday photos, text files, pictures, movies, programming projects and stuff like that. Personal stuff, nothing vital, but still I'd like to recover them...

It seems the only option is locating an OS4-capable machine, then.

@BrandonLee

Olegils method would work. You could split the Rawimage of the Drive in to DVD sized pieces (Or even Blue ray sized).Would be easier to mail DVDS back and forth than download images of a big Hardrive .

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Sam460ex : Radeon Rx550 Single slot Video Card : SIL3112 SATA card

@Spectre660

Ouch. Even my old 80GB would need DVDs!

A Bluray may only need 4 discs or 2 if double sided. But then you need a PC/Mac with a burner that won't corrupt the drive and software that can create a raw image and splut it.

Perhaps a real Amiga should be used? 68k SFS could be loadd into RDB. DOS7 and JXFS forget it. Unless there are 68k versions. Possibly on OS4 classic CD.