Andre S:
I think I remember that syntax like pldd if=\\.\A: ... will work in Windows, if your disk does begin with a Microsoft-style partition table.
... only works if the drive connected has an assigned drive-letter?
Yes and no.
Yes, I don't have the experience to teach me to accurately guess the Windows device name for you ... except when you do have a drive letter. If your drive letter is Z: then the Windows SCSI pass thru name since Win NT has been \\.\Z:.
No, pldd will actually try to pass SCSI thru to any device name you give it, just as the newer sg_inq and phgfsck do.
Believing a user space tool can accurately guess all the device names that will work is a newbie error in user-kernel version skew. Unsolved is the interface question of how to say whether SCSI or ATA or 64-bit i/o is wanted, when a device name accepts one or more, like /dev/hdv names do in 2.6 Linux. A proposal in play near Reiserfs is to see a device name as a folder, e.g. talk to names like /dev/hdv/.sgio /dev/hdv/.csr /dev/hdv/.64 to say what kind of connection you want.
pldd if=\\.\A: ... will work in Windows, if your disk does begin with a Microsoft-style partition table.Is it possible with ext3?
Yes.
Pass thru of ATA or SCSI connects at the level below partitioning.
What makes this confusing is the existence of names that are only sometimes equivalent.
In Linux, an HDD can have multiple names for the whole device, choose two or more from: /dev/hdz /dev/sdz /dev/sg9. The device contains a disk, which divides into partitions, each of which gets a name like /dev/sdz8 or /dev/sdz9.
In Windows, the device names are hard enough to see that I've never learned their system. The partitions get drive letters as names if the disk is removable or if the partition has a recognised format. But the partition name can be used as a whole device name. For example, if the partitions of a drive are W: and Z:, then we can pass SCSI thru to \\.\W: or \\.\Z: and still reach the same place.
Am I yet making any sense?
If you experiment, you will find that SCSI pass thru to any name of the device will either fetch the same block 0 or else fail to connect altogether.
Pat LaVarre
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