-
Junior Member
registered user
Mount error after duplicating disk with DD
I am working my way through Knoppix Hacks by Kyle Rankin and decided to try cloning a HD using DD as described in the book.
I have 2 identical HD's (identical make and model), HDA has two windoze partitions, one EISA one NTFS. I tried to copy HDA to HDB by using the following command
sudo dd if=/dev/hda of=/dev/hdb
I rebooted Knoppix after a sucessful copy (just 10mins for a 120GB HD), the two partitions on HDA appeared duplicated as HDB partitions. So far so good. I tried to mount HDB2 (the NTFS Partition) by double clicking on it on the desktop and received an error
Could not mount device. The reported error was:
Mount: wrong FS type, bad option, bad superblock on /dev/hda2, or too many mounted file systems.
Any idea why the partition wilnot mount in Knoppix? Windoze fails to mount it also and shows it as an empty partition without a file system.
Initially excited by DD being faster, easier and cheaper than Ghost or DriveCopy I am now unsure how to make the copy process work as described by Kyle Rankin.
Any help is truly appreciated.
JP
-
Senior Member
registered user
Might have been a read error, make sure none of the partitions are mount.
Also you might want to run this.
su
dd if=/dev/hda of=/dev/hdb && cat /dev/hda | md5sum && cat /dev/hdb | md5sum
That will, make you the root, then copy hda over to hdb then run a md5 check on both drives. If the string of numbers and letters at the end of the process aren't the same, something went wrong.
-
Junior Member
registered user
Thanks for the pointers firebyrd10!! Something did in fact go wrong this time around.
knoppix@ttyp0[knoppix]$ su
root@ttyp0[knoppix]# dd if=/dev/hda of=/dev/hdb && cat /dev/hda | md5sum && cat /dev/hdb | md5sum
dd: writing to `/dev/hdb': Input/output error
6248265+0 records in
6248264+0 records out
3199111168 bytes transferred in 623.965721 seconds (5127062 bytes/sec)
DD did not give any errors last time. Do you think this a hardware issue or do I need to start experimenting with different cheat codes? I've already tried 2.4 and 2.6 kernels at boot. The computer is almost 3 years old and Knoppix detects all the hardware just fine on boot.
QTParted also errors out when trying to analyze hdb, gives a segmentation error, tho it reads hda just fine.
JP
-
Senior Member
registered user
Originally Posted by
JPWhite
Thanks for the pointers firebyrd10!! Something did in fact go wrong this time around.
knoppix@ttyp0[knoppix]$ su
root@ttyp0[knoppix]# dd if=/dev/hda of=/dev/hdb && cat /dev/hda | md5sum && cat /dev/hdb | md5sum
dd: writing to `/dev/hdb': Input/output error
6248265+0 records in
6248264+0 records out
3199111168 bytes transferred in 623.965721 seconds (5127062 bytes/sec)
DD did not give any errors last time. Do you think this a hardware issue or do I need to start experimenting with different cheat codes? I've already tried 2.4 and 2.6 kernels at boot. The computer is almost 3 years old and Knoppix detects all the hardware just fine on boot.
QTParted also errors out when trying to analyze hdb, gives a segmentation error, tho it reads hda just fine.
JP
Mabye there are some bad clusters on the disk.
First try zeroing it out.
dd if=/dev/zero of=/dev/hdb6
Don't know if that will work if dd got errors last time, but its worth a shot.
Similar Threads
-
By Varkie in forum Laptops
Replies: 1
Last Post: 02-09-2006, 06:06 PM
-
By bottomer in forum Hardware & Booting
Replies: 0
Last Post: 11-30-2005, 02:20 PM
-
By Cuddles in forum General Support
Replies: 7
Last Post: 01-31-2005, 04:03 PM
-
By Blisset in forum Hardware & Booting
Replies: 4
Last Post: 09-17-2004, 06:50 PM
-
By Mycroft1855 in forum Customising & Remastering
Replies: 1
Last Post: 02-27-2003, 05:23 PM
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
A-Tech 8GB DDR3 1600 PC3-12800 Laptop SODIMM 204-Pin Memory RAM PC3L DDR3L 1x 8G
$13.99
HyperX FURY DDR3 8GB 16GB 32GB 1600 MHz PC3-12800 Desktop RAM Memory DIMM 240pin
$12.90
A-Tech 8GB PC3-12800 Desktop DDR3 1600 MHz Non ECC 240-Pin DIMM Memory RAM 1x 8G
$13.99
Team T-FORCE VULCAN Z 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) XMP
$35.99
HyperX FURY RAM DDR4 16GB 8GB 32GB 4GB 3200 2666 2400 2133 Desktop Memory DIMM
$9.64
A-Tech 16GB 2 x 8GB PC3-12800 Laptop SODIMM DDR3 1600 Memory RAM PC3L 16G DDR3L
$27.98
Kingston HyperX FURY DDR3 8GB 16GB 32G 1600 1866 1333 Desktop Memory RAM DIMM
$13.25
8GB PC3L-12800S 1600MHz SODIMM DDR3 RAM | Grade A
$12.00
A-Tech 256GB 4x 64GB 4Rx4 PC4-19200 ECC Load Reduced LRDIMM Server Memory RAM
$287.96
G.Skill RipJaws V 16GB (2x8GB) PC4-28800 (DDR4-3600) Memory F4-3600C16D-16GVKC
$45.00