Comment 37 for bug 1833618

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Rafael David Tinoco (rafaeldtinoco) wrote : Re: failing to deploy Ubuntu Disco

BTW, you got:

       15 the utility is unable to open, close or use the given DEVICE or some other file. The given file name could be incorrect or there may be permission problems. Adding the '-v' option may give more information.

And this is likely because USB devices don't have VPD, so sysfs is not showing "/sys/block/XXX/device/vpd_pg83":

From SCSI SPC-3 standard:
"""
Device Identification VPD page (page number: 0x83). Since SPC-3, support for this page has been flagged as mandatory. This page can be fetched by using the --ident option.

The reference document used for interpreting VPD pages (and the INQUIRY standard response) is T10/1713-D Revision 36e (SPC-4, 24 August 2012) found at http://www.t10.org . Obsolete and reserved items in the standard INQUIRY response output are displayed in square brackets.
"""

BUT it only serves for SCSI devices for RAW DEVICE MAPPING technique.