Dual boot with a glitch in the bios

I have one of these new all in one Medion Akoya P4020 (Aldi) touchscreen desktops.
Works reasonably well if you don't need fast graphics, the inbuilt HDTV tuner is fantastic. There is a small prob with the background LEDS failing (software) but I think Medion are working on that.
The motherboard is twin sata. One is the 1 terabyte HDD the other is a notebook style CD-DVD drive.
To get independent back up, I added a 320GB external HDD in a USB dock.
No problem, until I decided I would try a dual boot setup as I used to have in my older desk top. The second HDD crashed no matter what I tried.
I assumed it was a USB limitation so pulled out the sata CD-DVD drive and put it into an external enclosure on a USB connection.
Then I ran the sata 2 port out through an eSata connection to the HDD dock which will run off USB or sata and has its own power supply.
Still it crashed on initial boot on the second drive, I then noticed in the AMI bios,



1st Boot :CD-DVD


2nd Boot :HDD on sata 1


3rd Boot : [Disabled] my back up HDD



with a note saying "a device enclosed in
parenthesis has been disabled in the corresponding type menu"


I find I cannot re-enable this and have no idea where the corresponding type menu might be!


Emails to Medion have not been answered and I can find no driver updates on their site, never mind an answer to this particular problem.The BCD edit setup looks good but, if I select the backup drive to boot, a boot starts but fails to blue screen within a second or two.
That seems to indicate that win bootloader has started and then hit a problem? But surely that is after bios has finished?


Any help appreciated


Bobthequill

You can not install Windows to a USB or eSata drives, you need to partition your Main HD.

Dual Boot - Change OS Name in Windows Boot Manager
Dual Boot Installation with Windows 7 and XP

theog said:

You can not install Windows to a USB or eSata drives, you need to partition your Main HD.

Dual Boot - Change OS Name in Windows Boot Manager
Dual Boot Installation with Windows 7 and XP

Erm, I already have Win 7 home premium on the eSata drive. It makes no difference even if I swap the drives around and put it in sata port 1 inside the machine. It is recognised and will not get past initial boot.

I have a brand new Win 7 premium on the internal 1 terabyte drive and an older win 7 premium on the drive I am trying to add. It operates perfectly in dual boot in a conventional desktop.

It works as a file store no problem. The 1 terabyte drive works when internal and when plugged into the eSata extension dock.

The problem I think is the disablement in bios of the second boot option. It is independent of where it is connected.

I just need to be sure that it is achieved by a flag in bios or is it achieved by a flag that interferes with windows loader, in keys.ini maybe, which is on the drive I am trying to boot.

I have another hard drive with Vista on board. I might try to get that to dual boot on this new system.

Bobthequill

Night Hawk said:

When swapping drives back and forth you are also switching ports most likely where one drive will automatically be made the default boot device until the next one is added on. For configuring a dual or multiboot you leave a host drive set as the defautl hard drive seen at the top of the list in the list of drives installed when pressing enter on the hard drives item in the boot order or advanced section.

Even with only one item enabled set as hard drive that wouldn't prevent a second Windows installation from loading. The startup repair tool would be the first thing to try in order to see the 7 install with the problem running again there.

Thanks Nighthawk

Been there, done that. Repair tool tried a few times. I am unable to establish a second hard drive in the boot options in bios. it shows the second drive OK and identifies it. Just won't let me put it in the boot sequence. It always comes up [disabled]

The person who programmed this AMIbios for this particular machine, did too good a job. Unfortunately I cannot get enough info from Medion or AMI to reprogram the bios. Also, I no longer have the ability to program in Dos, even if I had the info. Too bloody old! it's been too long!

I just need to be sure how it was done, as I have never heard of
this type of bios manipulation before.

I just cannot see how Windows/system32/boot/winload.exe can start then fail due to this disablement unless it has been tweaked in advance by the bios.

Not sure I am looking at this logically. It may happen later but, it certainly puts up the start screen before failing.

Bobthequill

Night Hawk said:

What drive mode is the bios set for? When getting into a new build/different make board I first tried things out with the AHCI mode set and had too many problems until switching it to the Native ide mode. From there 7 has been running like a top.

In some cases you can get away with download of a particular driver in order to enable the AHCI mode. But besides all that this could explain why the errors are being seen when everything seems normal.

Other then that locating a bios update would seem to be the fast way to solve any corrupted programming. I never rush for those however when everything is running in top shape to fix what isn't broken. In your situation that might correct the problem if it isn't simply a setting change needed.

The bios was preset to AHCI mode. I haven't tried switching to IDE but will do so.

I did try the same intention with an old 250GB drive with Vista loaded. The drive ID became erratic and sometimes it would boot without detecting it at all. Even when detected it still would not allow boot from the second drive even if it was placed as first boot.

I did try turning off auto detect and S.M.A.R.T. but no improvement.

I am now back to the 320GB Win 7 drive which is always identified.
I must admit, it is not as if I am dead in the water but, I suspect if I try to partition the 1terabyte drive and add a second OS, it will hit the same problem.

It is OK to hold a recovery image on a second drive, but not OK to boot from that drive, only to restore from it!

What weird thinking justified programming in such a limitation?

Will report back.

Bobthequill

Just tried IDE mode but I thought I should enable PCI Bus Master
The sata ports showed as ports 5 and 6

It gave me 6 options on each:-
LBA/Large mode [Auto]
Block (multi sector transfer) [Auto]
PIO mode [Auto] ??
DMA mode [Auto]
S.M.A.R.T. [Auto]
32 bit data transfer [enabled]

When i returned to the first page the drives were undetected.

On reboot, it got through to the system select page. I didn't try the second boot but the normal one.

It started to load and went blue screen just before the little twirly flags came together. Which is exactly where the disable external OS fails as well.

I reverted to AHCI and no PCI IDE Bus Master.

Back to square one!

Possibly a little something learn't though.The failure mode is familiar.

I suspect that the 1 Terabyte drive has a special ID which sets it apart from the common herd of hard drives. the Bios is set up to allow only that special ID to be booted.

Otherwise it would have to hold a list of all possible drives to be excluded..

Makes sense, a sort of negative engineering?

I just might try it in my core 2 duo Gigabyte motherboard and see what happens.

Bobthequill