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Full Discussion: Access a File as a Device?
Top Forums UNIX for Advanced & Expert Users Access a File as a Device? Post 302608533 by Matt Miller on Saturday 17th of March 2012 06:52:15 PM
Old 03-17-2012
Quote:
What's your Operating System?
Linux.

Code:
 mount -t ext3 -o loop /path/to/dev_sda.17-Mar-2012 /mnt

I've tried that (actually, -t ext4), but:

Code:
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
       missing codepage or helper program, or other error

I also tried without -t. I think the reason is that I used dd to copy the entire disk, not individual partitions. That is, I used "if=/dev/sda" as opposed to "if=/dev/sda1". /dev/sda itself doesn't have a filesytem, right?

I could copy at the partition level, but I want to copy at the disk level because I want to get the boot sector so I can use this backup to replace the entire hard drive, but I also want to use this backup to restore individual files.
 

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LEARN ABOUT MINIX

repartit

REPARTITION(8)						      System Manager's Manual						    REPARTITION(8)

NAME

       repartition - load a partition table

SYNOPSIS

       repartition device [partition-file]

DESCRIPTION

       Repartition  uploads  a new partition table for the partitions of device.  The table is obtained from the first sector of partition-file if
       given, device otherwise.  Device may refer to the whole drive or a primary partition, depending on whether you want to upload  a  partition
       or a subpartition table.  The partitions will be truncated to fit within the enclosing device like the disk driver does, unless the numbers
       are coming from partition-file.

EXAMPLES

       repartition /dev/hd0
       repartition /dev/hd4 /etc/hd4.table

       Reload the partition table of drive 0 setting /dev/hd[1-4], and the subpartition table of /dev/hd4 setting /dev/hd4[a-d] using a file.  The
       latter may be useful if you need more than the 4 subpartitions a single Minix partition gives you.

DIAGNOSTICS

       The new table is printed on standard output.

FILES

       /dev/hd[0-9]

SEE ALSO

       hd(4), part(8).

BUGS

       The disk must be in use for the changes to stick.  The partition table of an idle disk will be reloaded on the first open.

AUTHOR

       Kees J. Bot (kjb@cs.vu.nl)

																    REPARTITION(8)
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