How to read sidecar scsi-hdd with amiga partitions?

27 October 2011, 21:51

Hello,

In 1991 my harddrive in my sidecar died.
It was a 83 MB Seagate HDD which was formerly installed in a sidecar with a bootable DOS-Partition and 3 amiga partitions.

I was able now to reconstruct the HDD.

Is there a possibility to read the amiga partitions without setting up the amiga with the sidecar?

Does anyone have any information about the structure of the MBR and how the amiga-partitions a set-up (adisk.com)?

Any help would be appreciated.

johnim · 27 October 2011, 21:55

hi get a scsi card for your pc and use with winuae

roy bates · 27 October 2011, 21:58

im assuming you are talking about an a590,then you will have to replace the drive.
and just reinstall the software.

the size of the drive is dependant on the rom revision in the 590.

Jope · 28 October 2011, 08:09

He's probably talking about the A1060 sidecar. Probably the only side expansion that officially had sidecar in its name..

roy bates · 28 October 2011, 08:36

thanks jope i do remember that one.

EDIT:-actaully its probably a good idea for peaple to mention there setup,so as to better help.

29 October 2011, 09:42

Sorry,

I was not aware of that there is other hardware called sidecar. I was speaking about a A1000 with a A1060 with SCSI-Card and Seagate Harddisk ST1096N.

'The drive was partitioned with adisk.com a pc tool with was delivered with the A1060.

My question was about the partition structure produced by this tool. Is it accesible by a pc with scsi card (this would asume pc style partitions).

It can't be a "normal" amiga hdd-setting, because there is a pc-partition in
the beginning of the harddrive.

I found some info about the flexibility of FFS to move the rdbapart from its "normal" position, where in my case the MBR of the pc-partition can be found.

Is uae able to recognize this?

I found a hint, that the checksum of the RDB will be destroyed if you connect a amiga harddrive to a pc with windows.

So do you have any information about how ADISK.COM manages the partitioning of the harddrive?

I d'ont want to risk loosing my data.

fgh · 29 October 2011, 16:09

Mbr and rdb and partitions for both can coexist on one drive. Just have to take care that you don't overlap any partitions

With a scsi card in your pc, windows can only read the fat partition but winuae will see the amiga partitions. (once you add the harddrive in winuae)

30 October 2011, 10:44

hi fgh,

Thanks for the info. I'll try that ...

(I'll get the reonstructed drive next week and will then report about the result).

Jope · 30 October 2011, 14:52

It may be RDB inside a PC partition. Just plug it into a Linux PC and make a full dump of the drive with dd.

Then make a backup copy of the dump and start investigating with a good hex editor.

30 October 2011, 20:43

Hi Jope,

That sounds very good. I already had similiar plans.

As soon as I'm done, I will report (I think by the end of the next week).

27 October 2011, 21:51	#1
HNoll Posts: n/a	How to read sidecar scsi-hdd with amiga partitions? Hello, In 1991 my harddrive in my sidecar died. It was a 83 MB Seagate HDD which was formerly installed in a sidecar with a bootable DOS-Partition and 3 amiga partitions. I was able now to reconstruct the HDD. Is there a possibility to read the amiga partitions without setting up the amiga with the sidecar? Does anyone have any information about the structure of the MBR and how the amiga-partitions a set-up (adisk.com)? Any help would be appreciated.

28 October 2011, 08:36	#5
roy bates Registered User Join Date: Apr 2011 Location: birmingham Age: 55 Posts: 2,827	thanks jope i do remember that one. EDIT:-actaully its probably a good idea for peaple to mention there setup,so as to better help. Last edited by roy bates; 28 October 2011 at 08:45.

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27 October 2011, 21:55	#2
johnim Amibay Mod/Staff Join Date: Jun 2010 Location: birmingham uk Age: 48 Posts: 1,019	hi get a scsi card for your pc and use with winuae

27 October 2011, 21:58	#3
roy bates Registered User Join Date: Apr 2011 Location: birmingham Age: 55 Posts: 2,827	im assuming you are talking about an a590,then you will have to replace the drive. and just reinstall the software. the size of the drive is dependant on the rom revision in the 590.

28 October 2011, 08:09	#4
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,864	He's probably talking about the A1060 sidecar. Probably the only side expansion that officially had sidecar in its name..

29 October 2011, 09:42	#6
HNoll Posts: n/a	Sorry, I was not aware of that there is other hardware called sidecar. I was speaking about a A1000 with a A1060 with SCSI-Card and Seagate Harddisk ST1096N. 'The drive was partitioned with adisk.com a pc tool with was delivered with the A1060. My question was about the partition structure produced by this tool. Is it accesible by a pc with scsi card (this would asume pc style partitions). It can't be a "normal" amiga hdd-setting, because there is a pc-partition in the beginning of the harddrive. I found some info about the flexibility of FFS to move the rdbapart from its "normal" position, where in my case the MBR of the pc-partition can be found. Is uae able to recognize this? I found a hint, that the checksum of the RDB will be destroyed if you connect a amiga harddrive to a pc with windows. So do you have any information about how ADISK.COM manages the partitioning of the harddrive? I d'ont want to risk loosing my data.

29 October 2011, 16:09	#7
fgh Registered User Join Date: Dec 2010 Location: Norway Posts: 820	Mbr and rdb and partitions for both can coexist on one drive. Just have to take care that you don't overlap any partitions With a scsi card in your pc, windows can only read the fat partition but winuae will see the amiga partitions. (once you add the harddrive in winuae)

30 October 2011, 10:44	#8
HNoll Posts: n/a	hi fgh, Thanks for the info. I'll try that ... (I'll get the reonstructed drive next week and will then report about the result).

30 October 2011, 14:52	#9
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,864	It may be RDB inside a PC partition. Just plug it into a Linux PC and make a full dump of the drive with dd. Then make a backup copy of the dump and start investigating with a good hex editor.

30 October 2011, 20:43	#10
HNoll Posts: n/a	Hi Jope, That sounds very good. I already had similiar plans. As soon as I'm done, I will report (I think by the end of the next week).

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