The Sinclair QL Forum

Is the UAE harddisk image a direct drive image or does it contain "extras"?


The UAE QubIDE harddisk image wasn't copied from a physical drive; and there's no extras.
It was originally just an blank 64 Mb file. After booting into UAE/QDOS Classic, I formatted the resultant empty drive via ...

Yes, I run RedHat + Shoestring Linux on Q60 and Debian 12 on a PC. Both pull the same image from an attached IDE drive, if swab is used on the PC but not on the Q60.


So your test shows that drives present differently to dd depending on whether you are running a big-endian or little-endian ...

Hi,


Dumped on a linux PC from a QL qubide!

The usual mistake. One can not use a little-endian system to directly read big-endian data on a 16 bit bus.

A QL QubIDE formatted harddisk, just as a Q40/Q60 QubIDE formatted harddisk, reads "QLW1" on big-endian hardware.

I guess I jumped to a ...

XorA wrote: Fri Aug 15, 2025 10:17 pm Dumped on a linux PC from a QL qubide!

Wow, that was quick.
I guess that means that the byte-swapped hardfile is the true QubIDE format.

I've been wondering why QubIDE images written by QDOS Classic under emulation end up byte-swapped.
Nothing jumps to mind so I took a look at the original unmodified QubIDE sources.

The driver correctly byte-swaps word data before sending it to the IDE controller, because the controller expects ...

Hi


The msys2 version in coreutils does!


I didn't realise there was a Windows version; good to know.
Its a useful command. I use it in bash scripts on my Mac to PEEK and POKE into files...

#PEEKL
filename="JS_ROM";fileoffset=49142;echo $((16#$(dd if="${filename}" ibs=1 skip=${fileoffset ...

There are UAE ROMs and QubIDE images in that zip file.

Does it require specific settings? Driver says "Not a QubIDE partition".


There are 3 versions of the ROM in the zip file.
QC3955UAE.ROM - no qubide
QC3955UAE1.ROM - with qubide for A1200
QC3955UAE4.ROM - with qubide for A4000

You will ...

Hi Peter,


Thanks Mark, it does work. Is larger mass storage also supported under UAE?


QubIDE disk images are supported. Available to UAE via an IDE RDB config.

There is a build ( QC-3955-Android-RLS.zip ) from March 2024 in the QDOS on Google TV walkthrough .
There are UAE ROMs and QubIDE ...

Hi Peter,

QDOS Classic is often overlooked, so I was tempted to demostrate the performance. ;)


The air-time is much welcome, and I've been following this thread with interest.
I do have a little info on the early QDOS Classic JSßs UAE ROM that should be mentioned.

The original Amiga QDOS ...

Hi Peter,

RAW MFM disk images were necessary at the time of the first UAE QDOS Classic ROM (around 2002) as UAE wasn't able to read non-amiga disk formats.
Later versions of UAE can read and write foreign formats - so normal 720k disk images should be OK.

Mark