Login or Register to Ask a Question and Join Our Community


UNIX for Advanced & Expert Users

Access a File as a Device?

 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users Access a File as a Device?
Prev   Next
# 1  
Old 03-17-2012
Access a File as a Device?
I backed up my 320GB hard drive to a file with dd:

Code:
dd if=/dev/sda of=dev_sda.17-Mar-2012 bs=1048576

The main idea was to be able to be able to completely replace my hard drive from this backup if necessary, but I'd also like to be able to restore individual files. I realize I could use this dd technique to backup each partition separately (there are six partitions on there), and then use the loopback device to mount those individual files, but I'd like to just have a single backup of the entire disk that can be used to both replace the disk and to restore individual files.

So, I'm imagining making this file available as some new device file, say, /dev/sdax, and then seeing /dev/sdax1, /dev/sdax5, /dev/sdax6, etc, and then being able to mount each of those. Or, how else can I get at the individual files in that 320GB backup file?
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. HP-UX

Failed to open tape device /dev/rmt/0mn:Device busy (errno = 16)

Hi, Unable to make tape backup, please help. /opt/ignite/bin/make_tape_recovery -a /dev/rmt/?mn -I -v -m tar -x inc_entire=vg00 * Creating local directories for configuration files and archive. ======= 04/25/16 16:28:08 IST Started /opt/ignite/bin/make_tape_recovery. (Mon... (4 Replies)
Discussion started by: anuragr
4 Replies

2. UNIX for Dummies Questions & Answers

Exclusive access for few IPs to NTP device

How to provide a client exclusive access to the NTP device or NTP server. Example: 1. Configured md5 authentication for a subnet added below restriction line to the subnet as below in ntp.conf file. Also configured the keys and md5 authentication working . restrict 192.168.1.0 mask... (1 Reply)
Discussion started by: iqtan
1 Replies

3. Ubuntu

Cannot access or boot encrypted drive (gave up waiting for root device...)

I cannot access or boot from my C drive. I'm running Zorin 9 and the drive is a Samsung SSD. The disk was encrypted on install, and that has not given me any problems before. When I start the system it gets to the memory test page, and does not then load the password prompt, which it used to.... (1 Reply)
Discussion started by: David4321
1 Replies

4. Cybersecurity

Can't access my device DJI Phantom 3 which uses UNIX. Need Help please!

Equipment: DJI Phantom 3 I have the root and passwords access, but I cannot find out how to access the equipment. There is a USB port going to a miniUSB that connects to the equipment, but on Windows is detecting the connection as being a Serial Port (COM3). I need some help in order to gain... (5 Replies)
Discussion started by: nobr3ga
5 Replies

5. UNIX for Advanced & Expert Users

How the user process can access the character device loaded by my module

I am trying to load into the kernel a system-call dynamically (without restarting the kernel and compailing it) in an attempt to (once in kernel mode) write to user process's memory. (I know there is a way to do this with the ptrace interface but it is not an option.) I know the only way to... (1 Reply)
Discussion started by: hopelessProgram
1 Replies

6. OS X (Apple)

Not mounted, no-driver USB device in terminal (how to access?)

hi, i am on a quest to access and even mount if possible a drive on os x. there is no driver for the device, but it lists fine in the system profiler. can i access its location from the terminal? how? here is what i get on the system profiler: Speed: Up to 480 Mb/sec Manufacturer: SAMSUNG ... (3 Replies)
Discussion started by: sontarieh
3 Replies

7. Homework & Coursework Questions

The pseudo-device provides a “backdoor” for gaining root access for a particular user.

Problem statement. In this part of the assignment, delegates will create a pseudo-device and write a device driver for it. The pseudo-device provides a “backdoor” for gaining root access for a particular user. Instead of compiling the device driver into the kernel, delegate will create a module.... (1 Reply)
Discussion started by: nyjilgeorge1
1 Replies

8. UNIX for Dummies Questions & Answers

controll access to a device

Hello everyone, I write a program (Linux & Solaris) that will run as non-root user, but the program must have rw access to a device /dev/ipmi (on linux) or /dev/bmc (on solaris). What is the standard way of granting such access? Linux: chmod on /dev/ipmi ? suid root my program? Solaris:... (1 Reply)
Discussion started by: Pavel.Bures
1 Replies

9. Linux

attempt to access beyond end of device

Hi, we have running 8 box sles 9 cluster and on an nfs filesystem we have the problem which is grepped from /var/log/messages. Jun 8 13:40:46 qnclpx02 kernel: attempt to access beyond end of device Jun 8 13:40:46 qnclpx02 kernel: sdat: rw=0, want=8894615912, limit=314572800 Is there... (1 Reply)
Discussion started by: ortsvorsteher
1 Replies

10. Linux

Non exclusive sound device access!!

Hi, I was wondering if any of you guys know of way to make applications that use sound device on linux to access it in a "non-exclusive manner", the aim is to be able to use more than one application that requires the sound device. Thanks (0 Replies)
Discussion started by: andryk
0 Replies
Login or Register to Ask a Question

LEARN ABOUT DEBIAN

tm::coverage

TM::Coverage(3pm)					User Contributed Perl Documentation					 TM::Coverage(3pm)

NAME

       TM::Coverage - Topic Maps, Code Coverage

DESCRIPTION

       This auxiliary package keeps track of the code coverage. Probably quite irrelevant for a user.

       Automatically generated for TM (1.44).

	  ---------------------------- ------ ------ ------ ------ ------ ------ ------
	  File				 stmt	bran   cond    sub    pod   time  total
	  ---------------------------- ------ ------ ------ ------ ------ ------ ------
	  blib/lib/TM.pm		 96.4	84.5   58.0   93.7   90.6   27.5   89.6
	  blib/lib/TM/Analysis.pm	100.0	90.9	n/a  100.0  100.0    0.0   97.5
	  blib/lib/TM/AsTMa/Fact.pm	100.0	 n/a	n/a  100.0    n/a    0.0  100.0
	  blib/lib/TM/AsTMa/Fact2.pm	100.0	 n/a	n/a  100.0    n/a    0.0  100.0
	  blib/lib/TM/Bulk.pm		 76.8	71.4   62.5   85.7  100.0    0.0   75.3
	  blib/lib/TM/CTM/CParser.pm	 65.6	34.3   31.0   84.6    0.0    1.6   52.5
	  blib/lib/TM/CTM/Parser.pm	 90.9	50.0	n/a  100.0    0.0    0.0   79.4
	  blib/lib/TM/DM.pm		100.0	65.0   66.7  100.0    n/a    0.0   96.5
	  blib/lib/TM/Graph.pm		 99.1	88.5	n/a  100.0  100.0    0.0   97.4
	  blib/lib/TM/Index.pm		100.0	80.0   60.0  100.0   83.3    0.3   87.8
	  .../Index/Characteristics.pm	100.0  100.0	n/a  100.0    0.0    0.0   97.0
	  blib/lib/TM/Index/Match.pm	 98.5	87.5	n/a  100.0  100.0    0.5   97.6
	  blib/lib/TM/LTM/CParser.pm	 84.9	45.3   42.7   98.2    0.0    0.2   67.8
	  blib/lib/TM/LTM/Parser.pm	 95.7	62.5   50.0  100.0    0.0    0.0   87.1
	  blib/lib/TM/Literal.pm	 45.8	 0.0   11.8   30.0    0.0    0.4   24.2
	  blib/lib/TM/MapSphere.pm	 96.5	84.6   68.8  100.0  100.0    0.0   91.7
	  .../TM/Materialized/AsTMa.pm	100.0	 n/a	n/a  100.0    0.0    0.0   95.5
	  ...ib/TM/Materialized/LTM.pm	100.0	 n/a	n/a  100.0    0.0    0.0   95.5
	  .../TM/Materialized/MLDBM.pm	100.0	83.3	n/a  100.0    0.0    0.0   92.6
	  ...b/TM/Materialized/Null.pm	100.0	 n/a	n/a  100.0    n/a    0.0  100.0
	  ...TM/Materialized/Stream.pm	100.0  100.0  100.0  100.0    0.0    0.0   96.0
	  ...ib/TM/Materialized/XTM.pm	100.0	 n/a	n/a  100.0    0.0    0.0   96.7
	  blib/lib/TM/PSI.pm		100.0	 n/a	n/a  100.0    n/a    0.0  100.0
	  blib/lib/TM/QL.pm		 91.4	61.5   66.7  100.0   50.0    0.1   83.9
	  blib/lib/TM/QL/CParser.pm	 76.2	42.4   41.9   90.3    0.0    9.1   62.0
	  blib/lib/TM/QL/PE.pm		 83.8	77.3   80.0   91.7    0.0   52.5   80.5
	  blib/lib/TM/QL/TS.pm		 65.2	35.4   27.8   70.8   53.3    2.4   56.9
	  blib/lib/TM/ResourceAble.pm	 88.1	87.5	n/a  100.0  100.0    0.0   90.0
	  .../TM/ResourceAble/MLDBM.pm	100.0	75.0	n/a  100.0    0.0    0.0   94.2
	  blib/lib/TM/Serializable.pm	 94.9	65.6  100.0  100.0  100.0    0.0   84.1
	  .../TM/Serializable/AsTMa.pm	 99.1	87.9   66.7  100.0  100.0    0.0   94.2
	  ...TM/Serializable/Dumper.pm	100.0	 n/a	n/a  100.0    0.0    0.0   93.5
	  ...ib/TM/Serializable/LTM.pm	 94.1	 n/a	n/a   83.3  100.0    0.0   92.0
	  ...ib/TM/Serializable/XTM.pm	 96.3	85.2   72.9  100.0  100.0    0.2   91.5
	  .../lib/TM/Synchronizable.pm	100.0	75.0  100.0  100.0  100.0    0.0   97.2
	  ...M/Synchronizable/MLDBM.pm	100.0	50.0	n/a  100.0    0.0    0.0   89.3
	  ...nchronizable/MapSphere.pm	100.0	63.6   64.3  100.0  100.0    0.0   88.6
	  ...TM/Synchronizable/Null.pm	100.0	 n/a	n/a  100.0    0.0    0.0   87.5
	  blib/lib/TM/Tau.pm		100.0	91.7   80.0  100.0    0.0    0.0   95.6
	  blib/lib/TM/Tau/Federate.pm	 63.2	39.3	n/a   62.5   27.3    0.0   54.5
	  blib/lib/TM/Tau/Filter.pm	100.0	91.7   66.7  100.0   50.0    0.0   90.0
	  .../TM/Tau/Filter/Analyze.pm	100.0	 n/a	n/a  100.0  100.0    0.0  100.0
	  blib/lib/TM/Tree.pm		100.0	57.1   44.4  100.0   66.7    0.0   88.0
	  blib/lib/TM/Utils.pm		100.0	50.0	n/a  100.0    0.0    0.0   89.3
	  ...ib/TM/Utils/TreeWalker.pm	100.0  100.0	n/a  100.0    0.0    0.0   96.0
	  ...ib/TM/Workbench/Plugin.pm	100.0	 n/a	n/a  100.0    0.0    0.0   75.0
	  ...M/Workbench/Plugin/Tau.pm	 87.5	50.0	n/a   80.0    0.0    0.0   73.1
	  yapp/astma-fact.yp		 96.9	91.5   73.3   97.8    0.0    4.8   92.7
	  yapp/astma2-fact.yp		 97.4	91.6   58.3  100.0    0.0    0.2   91.6
	  Total 			 76.8	45.2   40.2   91.2   57.0  100.0   63.8
	  ---------------------------- ------ ------ ------ ------ ------ ------ ------

SEE ALSO

       TM

COPYRIGHT AND LICENSE

       Copyright 200[8] by Robert Barta, <drrho@cpan.org>

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.10.1							    2008-10-05							 TM::Coverage(3pm)