So I am trying to clone a hard disk from another system (non IRIX, no label or volume header or known partition layout) using a raw data dump through dd. The drive is an old SCSI-1 model (Micropolis 1375) from a system I am trying to preserve, per another thread (https://forums.sgi.sh/index.php?threads/alpha-micro-1200.384/#post-2153). It is properly identified as ID 2 in the SCSI chain and recognized in hinv, the chain is properly terminated and no errors or warning messages can be seen anywhere.
Using IRIX 6.5, the drive shows up in /dev/rdsk but, seeing as it is not an IRIX partitioned disk, slices or partitions do not show up in /dev/dsk. That is to be expected.
Is it even possible to dump a raw image using dd? When I try to dd using /dev/rdsk/dks0d2vol as input it just finishes the operation with 0+0 records in / 0+0 records out, as shown in the image below. My goal was to get this raw image and eventually dump it on a SCSI2SD volume and have a backup if and when the real SCSI drive fails.
For what it is worth, I tried to achieve the same using Solaris on an old Sparcstation 2 and dd will not even start complaining about a missing or incorrect label, which is a somewhat similar situation only, in this case, IRIX does not show any error message, it just does not perform the operation.
Any tips would be most welcome.
Using IRIX 6.5, the drive shows up in /dev/rdsk but, seeing as it is not an IRIX partitioned disk, slices or partitions do not show up in /dev/dsk. That is to be expected.
Is it even possible to dump a raw image using dd? When I try to dd using /dev/rdsk/dks0d2vol as input it just finishes the operation with 0+0 records in / 0+0 records out, as shown in the image below. My goal was to get this raw image and eventually dump it on a SCSI2SD volume and have a backup if and when the real SCSI drive fails.
For what it is worth, I tried to achieve the same using Solaris on an old Sparcstation 2 and dd will not even start complaining about a missing or incorrect label, which is a somewhat similar situation only, in this case, IRIX does not show any error message, it just does not perform the operation.
Any tips would be most welcome.
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