12-21-2011
cp to copy only non-corrupt files
I don't know if I am asking this correctly, but I have a hard drive with some bad sectors and it appears that some of the data is corrupt. I am having allot of trouble copying the data to a new drive. The issue is not in copying files, but that the new drive to which files are copied is not acting in a stable manner after the files are copied to it. Check disk runs every time I restart, but stops with an error before it finishes. Data on the drive will be good, but after a couple of restarts, the same data will be corrupt and files won't open.
I realize that the problem could be the drive, but it seems more complicated than that. There is only one partition on the drive that is causing problems. There is a second partition on the drive that check disk does not run on.
It would be very helpful if I could confirm that all the files I am copying to the drive are non-corrupted files and skip those that are. I don't know if there is any way to test the files before they are copied. I know that sometimes you can't change permissions on corrupt files, or can't open them, but I don't know how that helps.
Suggestions would be appreciated.
LMHmedchem
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HD(4) Linux Programmer's Manual HD(4)
NAME
hd - MFM/IDE hard disk devices
DESCRIPTION
The hd* devices are block devices to access MFM/IDE hard disk drives in raw mode. The master drive on the primary IDE controller (major
device number 3) is hda; the slave drive is hdb. The master drive of the second controller (major device number 22) is hdc and the slave
hdd.
General IDE block device names have the form hdX, or hdXP, where X is a letter denoting the physical drive, and P is a number denoting the
partition on that physical drive. The first form, hdX, is used to address the whole drive. Partition numbers are assigned in the order
the partitions are discovered, and only nonempty, nonextended partitions get a number. However, partition numbers 1-4 are given to the
four partitions described in the MBR (the "primary" partitions), regardless of whether they are unused or extended. Thus, the first logi-
cal partition will be hdX5. Both DOS-type partitioning and BSD-disklabel partitioning are supported. You can have at most 63 partitions
on an IDE disk.
For example, /dev/hda refers to all of the first IDE drive in the system; and /dev/hdb3 refers to the third DOS "primary" partition on the
second one.
They are typically created by:
mknod -m 660 /dev/hda b 3 0
mknod -m 660 /dev/hda1 b 3 1
mknod -m 660 /dev/hda2 b 3 2
...
mknod -m 660 /dev/hda8 b 3 8
mknod -m 660 /dev/hdb b 3 64
mknod -m 660 /dev/hdb1 b 3 65
mknod -m 660 /dev/hdb2 b 3 66
...
mknod -m 660 /dev/hdb8 b 3 72
chown root:disk /dev/hd*
FILES
/dev/hd*
SEE ALSO
chown(1), mknod(1), sd(4), mount(8)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 1992-12-17 HD(4)