GVP Scsi max hard disk size?

[Robert17]

Does anyone know if it is possible to use an 18gb Scsi drive with OS3.9 Using a GVP Scsi board?

It's a GForce 030 Combo with v4.15 Scsi Rom.

Also anyone using a mechware Scsi card reader with the above, what are you experiences?

Robert.

[Tenacious]

I've read posts here of folks running hard drives that large.  I've never tried drives over the 4 Gig barrier.

I would guess that you would need the latest rom for the GVP and one of the several file system solutions (PFS3, etc) to do this.

[Bamiga2002]

@Robert17
Additional info here.

[MiAmigo]

I have this board. Running it with a 4.35GB, or somewhere thereabouts.

[ChaosLord]

I donno the limit of a v4.15 ROM.  It might work, it might not.

But you should definitely be able to run up to at least 128GB drives if you buy a GURU-ROM update for it.  As v6.something has 64-bit support.

http://www.amiga-hardware.com/showhardware.cgi?HARDID=1670

If you already have an old GURU-ROM and it doesn't work then you could just download an update of the ROM-chip and burn it.

[Thomas]

There is no 128GB limit in SCSI. The next limit after 4GB is 2TB.

128GB is an IDE/ATA limit.

[alexh]

I wish I understood how the Amiga disk API's worked.... (need to read up).

If the ROM supports SCSI-direct can you form any SCSI command you like? i.e. READ12 commands?

[Robert17]

Thanks everyone for the replies, I've had a card reader an an 18gb hard disk working using SFS and PFS Normal and direct SCSI. The trouble I'm getting is random crashed, and also when I try to unarc a file using either unarc from OS 3.9 or LHA, it reports the files are corrupt, whether they are downloaded from aminet or written to a CD, I'll try another cable later, are there any known issues with the GVP 030 with early B2000s? Mine is a 4.1.

Robert.

[Thomas]

I wish I understood how the Amiga disk API's worked.... (need to read up).

If the ROM supports SCSI-direct can you form any SCSI command you like? i.e. READ12 commands?

Yes, that's what Direct-SCSI is made for (actually the command's name is HD_SCSICMD. The name Direct-SCSI was inspired by other people. I first read it in the PFS3 manual).

However, there might be drivers which check the SCSI command before they send it to the bus and this check might refuse commands which weren't known when the driver was written.