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Old 03-25-2015, 04:37 PM   #1
ebeighe
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restore failed backup target not large enough to hold entire backup by itself

[edit: see edits below; i haven't fixed it yet but at least i know what's going on...]

hi there. i have a friend's toshiba sd-h400 (circa 2004) tivo with a failed hard drive (i have an identical one).
I've done this before a number of times for other friends over the years; i have an older pc in garage all set to go, it boots up PTVupgrade LBA48 off of a CD (linux)...
i got my backup image mounted just fine (for simplicity lets say it's a backup of the original Maxtor 80G that came with the unit; it was never hacked or whatever)...

when i do with the new/target drive as hdd (secondary slave):
mfsrestore -s 127 -zpi /mnt/e/file.tiv /dev/hdd

all i get is an immediate error
restore failed backup target not large enough to hold entire backup by itself

Other attempts yield same error, e.g. i plugged in my origianl maxtor (that still works fine; it's been in a drawer for probably 10 years) and tried piping mfsback to mfsrestore and got same error.

I've tried two different target drives: a 160G [edit #1 -- oops, something wrong with the way bios or whatever is detecting drive capacity; hdparm is only seeing 32G] and an 800G [edit #2 -- oops, this is an 80GB drive, not 800!]... i.e. both clearly larger than 80G

Help? How do i tell what mfs tools sees as the target drives size?

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Last edited by ebeighe; 03-25-2015 at 11:40 PM..
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Old 03-26-2015, 06:21 PM   #2
ebeighe
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All better now :-)

As mentioned above; the difficulties had more to do with IDE, and the bios not correctly identifying things.

p.s. the command that comes in handy with regard to disks and capacities is hdparm, e.g.
hdparm /dev/hda
It's on the PTVupgrade bootable disk.

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Old 03-26-2015, 06:59 PM   #3
unitron
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You have to watch out for truncated images taken from Maxtor drives, as back in the S2 days they tended to have a slightly higher LBA number than other brands for any given size in GBs, and so one from, say, a 40GB Maxtor wouldn't restore to a 40GB WD or Seagate.

I prefer the MFS Live cd myself, but I've pretty much moved on to WinMFS except for times when I need something on the cd, like hdparm or dd_rescue.

That report of the drive only being 32GB is a PC motherboard bios thing, it (the bios) needs to be updated to be able to count higher than that.

fdisk -l

and

pdisk -l

should show you which drive is which /dev/?

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