On 6/17/2017 4:04 AM, Rob Jarratt via cctalk wrote:
On 06/16/2017 09:04 AM, Ed Thierbach via cctalk wrote:
BACKUP/IMAGE might work.  I have a dim recollection of moving system
drives around that way, but it's been a few decades. :-)
I have cloned drives that way for VMS systems.  Backup/image is the tool for
that.

So have I, but it doesn't work for tapes. Unless someone knows a trick that I 
have not discovered?
MOUNT/FOREIGN/BLOCKSIZE=65534 MUA0:
COPY MUA0: TAPE.DMP

That's it. You've just got to mount it with a larger blocksize than the blocks on the tape. If you encounter a bad block, you're screwed. There's no equivalent to "ddrescue" that ignores read errors and continues. However, for TK50s, there's probably no way to recover from a read error anyway.
    -Rick

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