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Old 10-12-2004, 10:09 AM   #31
tivoupgrade
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Quote:
Originally posted by PortlandPaw
That will thrill her.

Trust me, do that as a weekend favor and get her something she really wants for Christmas. Your marriage will be far more secure. Trust me.

You get more than technical assistance in the TiVo Community Forum!
Perhaps a bowling ball with your name on it? (Homer Simpson tried that and it didn't work...)
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Old 10-14-2004, 11:04 PM   #32
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Re: PTVupgrade LBA48 CD with dd_rescue / dd_help

Quote:
Originally posted by tivoupgrade
Folks,

At the suggestion of Robert S, I've looked into, and made an attempt, to incorporate dd_rescue and dd_rhelp. Not as trivial as it initially seemed, there were a bunch of libraries that appeared to be missing.

In any case, I think I've identified and located the missing libraries, and dd_* binaries and incorporated them into a test version of the CD discussed here but before I release it to the general public, those who play with these tools, please give things a test and let me know what is broken, and hopefully what needs to be done to fix it.

Thanks!

Lou

PTVupgrade LBA48 3.01 (beta)
I had the same troubles as "lawnmowerdeth" had with dd_rescue. I used the PTVupgrade beta CD-Rom mentioned above. (For whatever reason, I could not get my computer to recognize the RIP iso CD-Rom...)

dd_rescue did not recognize "-B", "-A", or "-l". It gave a segmentation fault with "-b 2M". I don't know if this means the CD is missing information, or if I'm doing something wrong. (Which is a distict possibility.)

I ended up using: "dd_rescue -v /dev/hdb /dev/hdd". It's slowwwwly copying, about 10,000 kiB/s / second.

Trying to get the programs from my old Tivo B drive, which has some bad sectors, onto the new Maxtor warranty replacement drive, for my SVR-2000.
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Old 11-30-2004, 12:48 PM   #33
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Quote:
Originally posted by PortlandPaw
{This is an updated version of my first post to indicate a more efficient way to do this}
Am currently trying this (thanks for taking to trouble to publish and update the guide) it has been running for 5 hours and is 35% through a 120 gig HDD. However, apart from the first 5 minutes when there was activity on ther PC HDD light, it now no longer flashes.

What I have is contantly scrolling text with details of transfer etc but it is also saying

"(warning): /dev/hda xxxxxxxx.xk input/output error? (xxxxxxxx.x being an updating figure reprenenting gig processed) Am I wasting my time and should I stop it, or is this normal?

Thakns again
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Old 12-10-2004, 07:55 AM   #34
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Note Thanks for all the info

I can't believe how easy it was to use the RIP CD and dd_rescue. I started having the freezing and rebooting issues about 2 weeks ago. After an exhausted search here, I figured the only way to fix it was replace the less than 6 mo old Matrox 160 with a new WD 160.

I ran dd_rescue and came back after 18 hours and it had finished. I put the new drive back into the Tivo and it booted right up, all programs were there, all season passes, what a miracle!!!

I used Hinsdale's How-To with MFSTools 2 to originally upgrade from the 40 to the 160 and I couldn't believe how easy that was also!

Just wanted to say thanks to all who contributed here with such great information.


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Old 12-10-2004, 09:19 AM   #35
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Quote:
Originally posted by gwgw45
Am I wasting my time and should I stop it, or is this normal?

Thakns again
Gareth
I had a similar situation. Different error but similar situation. You're probably wasting your time, but on the off chance you aren't I would say that the ten hours you'll have to wait to find out is worth the cost saved on a new drive.
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Old 12-10-2004, 01:46 PM   #36
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Quote:
Originally posted by PortlandPaw
I had a similar situation. Different error but similar situation. You're probably wasting your time, but on the off chance you aren't I would say that the ten hours you'll have to wait to find out is worth the cost saved on a new drive.
As it happens, it was a waste of time. However, thanks for the reply, it was worth a try:-)

Gareth
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Old 12-29-2004, 12:07 PM   #37
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Red face

First, let me thank all who have contributed to this thread, I've gone from hopeless to somewhat hopeful.

I have an HDVR2 with Maxtor 40GB A drive (original) and added 120GB Samsung B drive from Weakness.
This weekend it became unresponsive, I pulled the plug and then got the GSOD. I would like to rescue the programming so I got a new Segate 120GB drive and proceeded to follow PortlandPaw's steps using dd_rescue.

Using the Maxtor utility, errors were found on the A drive. I used dd_rescue on the Maxtor along with new 120GB Seagate. dd_rescue finished and I reinstalled both drives (new Seagate 'A' and old Samsung 'B') into TiVo, powered up and GSOD. I unplugged and sighed. Then I remembered bobotech's post where he initally got the GSOD and then the unit recovered.

It's been about 4 hours and still on GSOD.

- How long should I let it attempt to repair itself?

- Is it possible that there is also a problem on the Samsung 'B' drive?

- Anything else to try?

- At what point do I cut my losses and do image restore?
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Old 02-04-2005, 03:59 PM   #38
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I just copied the my "A" drive in my DirecTiVo to another hard drive using Knoppix. Here are a few hints (mind you, the Knoppix CD I had available was Knoppix 3.04-May 17, 2004):
  • At the knoppix boot prompt, enter knoppix 2 vga=ext dma nousb nodhcp. This will start knoppix in text-only mode, use the text display rather than graphic (faster), use dma for faster drive access, and skip the checks for network and usb.
  • Once dd_rescue hits a bad block, it ended up resetting the IDE Bus, so that when it went back to large block copying, it was much slower. Note the location, then Control-C out. Shutdown and restart the computer. Then, add the following to the dd_rescue line: -s xxxxxxxk. This will restart the drive copying at that particular location.
  • Another option is -r. This will copy the drive from the end back to the beginning instead of beginning to end. I didn't find out about this until I finished copying. My scan of the hard drive indicated a problem at the 25% point, so if I applied the -r, it would have gone high-speed for most of the way, then slower speed if I wasn't around to reset the computer.
Hope that helps. I'm posting this up at DBSTalk with appropriate credit to TiVo Community.
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Old 02-27-2005, 04:56 PM   #39
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Just as an update... the replacement 160GB Samsung drive arrived last Monday second day air. It took about 75 minutes to do a dd_rescue copy from the 250GB drive back to the 160GB hard drive. I was using the latest version of the knoppix disk. Some notes:

1. There is no need to do a "cd /usr/bin".
2. dma is automatically activated.
3. I got a "average" transfer rate of 35,000 Kb/s. Actual speed was faster, however, the occassional timeouts.
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Old 03-06-2005, 07:08 PM   #40
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I'm not sure if I'm stirring up old issues, but I never saw this answered from the original post:

Quote:
Originally Posted by PortlandPaw
{later edit -- turned out this was a problem -- the geometry of the drives should be identical (or at least the target drive larger) or TiVo is going to have trouble finding blocks of data}
I'm probably going to end up replacing my 2 120GB drives (with new ones) this week, and I'm expecting to run into this issue. Does anyone have any ideas to get around this and possibly still keep recordings?

C
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Old 03-07-2005, 11:45 AM   #41
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Quote:
Originally Posted by chernas
I'm not sure if I'm stirring up old issues, but I never saw this answered from the original post:



I'm probably going to end up replacing my 2 120GB drives (with new ones) this week, and I'm expecting to run into this issue. Does anyone have any ideas to get around this and possibly still keep recordings?

C
Your best bet is to use the same brand as the current drives.
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Old 03-07-2005, 12:08 PM   #42
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Thanks, I think that would probably be best too, but I don't have that option. At least I can't easily find my 2 original drives. I'm trying to get at solutions for my current problem. 2 120GB drives -> 2 120GB drives...

C
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Old 03-21-2005, 08:12 AM   #43
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I am trying to dd_rescue a 160GB drive with a 200GB drive (I know I'm only getting 137GB of usable space). dd_rescue seems to be not responding, it copied about 80GB and now its just stuck there and hasnt changed the screen for hours. The HD light is on but if I press enter it forwards to the next line but no command promt. There are no errors while copying, so I dont know why its seems like its hanging.
should I kill it and try to start it again? or is there some other solution?
...I'm using the RIP CD and my dd_rescue command looks like this:
dd_rescue -B 1b -b 2M -A -v -l /var/dd_rescue.log /dev/sda /dev/sdb
I have the drives pluged in to the SATA ports and am using a SATA to PATA adapter, is that causing a problem, should I try to boot the CD from the SATA adapter and have the HDs on the IDE channel?
one more thing is it says: "dd_rescue: (info): about to transfer 0.0 kBytes from /dev/sda to /dev/sdb"
is that normal for it to say 0.0k?
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Old 03-29-2005, 08:07 PM   #44
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Some added tips

These tips came from SR712 and were shamelessly copied from the forum which cannot be named. It explains how to set DMA on the source and target drives and set 2M block size to optimize the speed of copy.

Quote:
Put another way, where and how do you enable DMA and 2M block size?

After you boot into Linux, before you run the dd command:

Code:
hdparm -d1 /dev/hda /dev/hdc
[If you have the drives as hda and hdc.]

Then, use dd command like this to enable 2M block sizes:
Code:
dd if=/dev/hda of=/dev/hdc bs=2M
...if your source drive is hda and your destination drive is hdc.
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Old 03-29-2005, 11:38 PM   #45
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Why use dd?? In a dd_rescue thread? I'm appalled!

His dd_rescue command line clearly shows he's using a 2M buffer so I see no advantage reverting back to dd. Well, I can't see any reason do ever revert back to dd...

Oh and just so everyone is aware that hdparm command will only work if DMA support is gen'd into the kernel.
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Old 03-30-2005, 04:43 AM   #46
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If you find this information isn't helpful, by all means, don't use it.
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Old 03-30-2005, 11:14 AM   #47
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Quote:
Originally Posted by PortlandPaw
These tips came from SR712 and were shamelessly copied from the forum which cannot be named. It explains how to set DMA on the source and target drives and set 2M block size to optimize the speed of copy.




After you boot into Linux, before you run the dd command:

Code:
hdparm -d1 /dev/hda /dev/hdc
[If you have the drives as hda and hdc.]

Then, use dd command like this to enable 2M block sizes:
Code:
dd if=/dev/hda of=/dev/hdc bs=2M
...if your source drive is hda and your destination drive is hdc.
Quote:
Originally Posted by PortlandPaw
If you find this information isn't helpful, by all means, don't use it.
Well my only concern is that you're cutting and pasting this stuff without any explanation or background on the commands and people that are not UNIX/Linux savoy are going to use them and they may not work. That is not helpful to people to who UNIX/Linux is completely unfamiliar. Some expect to use these commands verbatim and expect them to work as described, that is not always the case.

Case in point, the hdparm command you posted may not work for reasons I already stated which are not fully inclusive.

Second, the dd command you posted has pitfalls, one of which is no status reporting of progress which was one of the key factors that dd_rescue has over dd because people couldn't tell if dd was really doing anything. And second, a much BIGGER pitfall is with the 2M blocking size in your posted dd command every time dd encounters a bad spot you could lose in the transfer up to that 2M instead of what dd_rescue does i.e. fall back to the 512 byte blocking factor so you only lose 512 bytes (one sector) verses 2M. This could be critical and render the target disk unbootable depending where this occurs. Of course a 512 byte loss could do that also but with the blocking factor being 2M in the dd command verses 512 bytes for dd_rescue's -B option you're increasing the chance of that happening 4000 to 1. Not good odds in my book, I'd never take those odds.

This blocking factor fall back along with the status reporting that dd_rescue does were two of the reasons I started using dd_rescue instead of dd and did all the testing and bought it and my results to this forum. Going back and suggesting dd be used again is a step backwards IMO, there's nothing that indicates dd will work where dd_rescue won't or vise versa. If dd_rescue hangs dd will most likely hang too and the hang is more then likely due to a hard disk that is having a major problem.

Pretty arrogant comment to make, then don't use them, when we're trying to help others especially for people that may not be technical and understand the difference between dd and dd_rescue.
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Old 03-30-2005, 11:53 AM   #48
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I post only that which I believe to be helpful to people. If everybody here were to limit their posts to only that which they know to be 100% accurate and in language that 100% of the people could understand 100% of the time, it would be a very barren board, indeed.

I'm sorry if I've somehow offended your sensitivities or haven't risen to your level of quality. Makes me sorry I started this thread.
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Old 03-30-2005, 11:58 AM   #49
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Quote:
Originally Posted by PortlandPaw
I post only that which I believe to be helpful to people. If everybody here were to limit their posts to only that which they know to be 100% accurate and in language that 100% of the people could understand 100% of the time, it would be a very barren board, indeed.

I'm sorry if I've somehow offended your sensitivities or haven't risen to your level of quality. Makes me sorry I started this thread.
Well...

Now that I think more about it, that dd command may not work at all on a source disk that has sectors that cannot be read. Without conv=noerror dd will stop at the point it encounters the first read error, and without conv=sync dd won't pad the 2M block so it is a 2M block when it writes it. If it were to read 10K into the 2M block and have a problem it would write 10k, then when it read the next 2M it would put it on the target disk right after that last 10K and now you're skewing the data on the target disk by that loss of 1.99M and that could be across partitions because dd is a physical sector copy. I'm not 100% sure of this not ever having a chance to test it but that's the way the man pages read. The only thing I'm not sure of is where dd picks up the start for read of the next 2M block from the source disk, right after the sector it couldn't read or at what would have been the end of that last 2M read block. If it's the end of the 2M read block, that's when things would get screwed up. Next time I have a failed disk I'm going to explore this so I know once and for all. Course that wouldn't really happen anyway because you don't have the conv=noerror so it would stop.

That dd command will only work on a source disk that does not have any read problems, which is an oxy moron because in most cases there would be no need to dd it in the first place. So, without conv=noerror,sync that dd command is useless in attempting to copy a source disk that has read problems.

So, how is a command that will not work on a failing disk helpful? But I should just shutup and not use it....

Quote:
Originally Posted by PortlandPaw
Makes me sorry I started this thread.
Of that you shouldn't be. It's nice to have this info in a place where people can find it and of that you have done a good job. I was just concerned that someone would jump to the end of the thread and think that that dd command was now the command in fashion. Nothing personal. You did what I didn't have the time to do and that was to do this thread as a HowTo and IMO that was GREAT!
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Old 06-06-2005, 08:23 PM   #50
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Quote:
Originally Posted by lawnmowerdeth
Hi,
I'm trying to rescue an HDVR2 drive with the beta CD of PTVupgrade, and I'm having some problems with dd_rescue.
I can't use the -B switch or the -A switch (unknown command error), and -b 2M gives a segmentation fault. Basically I am only able to use:
dd_rescue -v /dev/hda /dev/hdb.
I'm having the same issue with dd_rescue on the PTV CD. The switches listed in the help file are different from the version I was using with Knoppix. There's no -B, -A, or -l, for instance, and -r has a different function (not reverse). I wonder if this is a different flavor of dd_rescue? (Google turns up a Diaz version vs. the Garloff version, which I assume is what I was using before and what the posts here refer to?)

When it finishes running on my machine I will get the available parameters so folks can compare the two versions and perhaps make recommendations about which ones the folks using the PTV CD should choose.
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Old 06-07-2005, 02:09 PM   #51
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Here are the parameters for the version of dd_rescue on the PTV Upgrade CD:
Quote:
dd_rescue [options] infile outfile [badblocks_file]

-h display help and exit
-V display version and exit
-b hardware block size of input device, in bytes [default = 512]
-c hardware cluster size; number of blocks to copy at a time [default = 128]
-e exit if more than n error areas found [default = -1 = infinite]
-i start position of input file [default = 0]
-o start position of output file [defaul = ipos]
-q quiet operation
-r exit after max given retries (-1 = infinity) [default = 0]
-s max size of data to be copied in bytes
-t truncate output file
-v verbose operation

If badblocks_file given, write to it the list of remaining bad blocks on exit. If badblocks_file exists, try to copy only the blocks listed in it.
Perhaps the dd_rescue experts can suggest the best configuration for this version. Obviously you want -v and the badblocks_file. If I'm understanding it correctly, -b correlates to -B and -c to -b, so I think you'd want -b 1b -c 2M. There doesn't seem to be a corollary for -A.
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Old 06-23-2005, 10:06 AM   #52
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So Coldtoes,

Did you ever sucessfully copy over your drive using dd_rescue from the PTVupgrade disk, and if so what string of paramaters did you use?
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Old 09-23-2005, 10:58 AM   #53
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Performed dd_rescue, now in a GSOD loop.

OK.

Another Maxtor 120 has failed on me, at 13 months of course. Turned on the TV to find it in a "Welcome! Powering up" loop.

After much crying (it *is* premiere week! ), decided to run out and get a drive and investigate my options. I had about 60 shows on there that were either about to be archived, or not yet watched.

Ended up getting a 200 GB WD (3-year warranty) to keep my options open. Decided to try dd_rescue and downloaded a Knoppix 3.9 Live CD. First I made a standard MFS_Tools 2.0 backup just to be safe.

I used the command as indicated in PP's updated post above, and it cruised along until hitting its first bad blocks at about 33 G. I let it go for a bit, then rebooted and invoked it again, this time to go in reverse. It flew along, transferring 45 G before the first errors. I went away for an hour and came back to find it was in good sectors again, so I rebooted and used the -s xxxxxxxxk flag to get it to start where it left off. I had to do this twice in all. I woke up this morning and the copy was complete, with a total of 1200K of errors. I figure my chances are good.

I popped the new 200 GB drive in the DSR6000 and booted up fine. I watched a bit of live TV and checked Now Playing to see that all my shows are there. I left for an appointment.

When I came home after a couple of hours, I was on a GSOD. I plugged in the Ethernet cable. After about 10 minutes, it tried to boot up. It gets through the CacheCard boot, to "Almost there..." then back to GSOD. This has repeated several times now in the hour I've been here.

Is TiVo trying to repair the null blocks, or is something else wrong? Should I let it keep cycling like this, or just give up on my recordings and SPs and just restore the MFS Tools image?
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Old 09-23-2005, 10:29 PM   #54
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Update: Came home from work, and it was still rebooting into a GSOD loop.

Someone in HH suggested I Kickstart, so I went to alt.org and looked at the codes. Tried a 58, it rebooted then went into GSOD for over an hour. Then BAM, TV! At first, I was getting errors in TiVoweb, and the UI was as slow as without CacheCard. I could not search or check the To Do list and so forth. Did a reboot and it all cleared up. Fast and full-featured!
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Old 12-20-2005, 08:45 AM   #55
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Thanks, PortlandPaw!

PortlandPaw, don't be sorry you started this thread! This thread just saved about 100 hours of programs for me! My 120GB Maxtor drive started to cause my HDVR2 to freeze so I knew that the drive was dying. I came to TCF and stumbled upon this thread. Thanks to you, PortlandPaw, I have my 100 hours back on a new Seagate drive.

Thank you very much!!!

The drive was badly injured, it took a long time for dd_rescue to perform its magic: more than 30 hours. But hey, having my programs back: priceless.

For the record, this is the second 120GB Maxtor drive that failed on me. This drive was a refurbished one I got as part of the warranty for the first one. It seems that Maxtor drives are causing a lot of problems for a lot of people, from the information I can gather here and there on TCF. Needless to say that I will never buy any Maxtor drives ever again!

BlankMan, I wish I had seen you thread about dd_rescue before I started restoring my failing drive with dd_recue because maybe it would have saved me a lot of time.

That said, whoever created dd_rescue is a genius!
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Old 02-20-2006, 02:07 PM   #56
Robmorrow
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Hi,

I just had an 80 gig drive fail and replacing it with a 200 gig drive. If I want to try to rescue the data on my old drive, and copy it over, do I need to update the new drive with the new kernel for large drive support over 137 gigs, before I do the copying from the old drive?

Thanks

Rob
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Old 02-20-2006, 02:11 PM   #57
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Quote:
Originally Posted by Robmorrow
Hi,

I just had an 80 gig drive fail and replacing it with a 200 gig drive. If I want to try to rescue the data on my old drive, and copy it over, do I need to update the new drive with the new kernel for large drive support over 137 gigs, before I do the copying from the old drive?

Thanks

Rob
After... and note that it won't make a difference if you don't do an mfsadd after you've done your rescue...
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Old 02-20-2006, 05:12 PM   #58
Robmorrow
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Hi,

I am confused now. Do I just need to run CopyKern? Is mfsadd only for adding two drives in a Tivo machine? I see some posts referencing to use that for expanding the drive as well bigger than 137 gigs. Also, on the sticky, I see you mentioning the term "Bless". What does that mean?


FYI, I have a series 2 Toshiba SD-H400 Tivo machine.

Rob
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Old 02-27-2006, 11:47 AM   #59
Francesco
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I just downloaded the Universal Boot CD v.11 (I have a few ongoing projects). Does this version carry the dd_rescue tool? And is it the version of dd_rescue with the same switches as on the Live Linux distributions?
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Old 02-27-2006, 05:13 PM   #60
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Crap. No errors on the drive. And a kickstart isn't working either - tried 58 and now 57.
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