S
sam
Arno Wagner said:
Trivially avoidable by writing more than one copy.
Corse it wont, its WAY past its useby date.
You can protect yourself against that trivially by writing that stuff to a hard drive too.
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Trivially avoidable by writing more than one copy.
Corse it wont, its WAY past its useby date.
You can protect yourself against that trivially by writing that stuff to a hard drive too.
J
Justin
sam said:Trivially avoidable by writing more than one copy.
Corse it wont, its WAY past its useby date.
You can protect yourself against that trivially by writing that stuff to a hard drive too.
OK, since drives capable of DVD-RAMness aren't that expensive off Newegg
I'll buy one of those, a few DVD-RAM discs and save the DV and m2t files
to both.
Good plan?
S
sam
Justin said:OK, since drives capable of DVD-RAMness aren't that expensive off
Newegg I'll buy one of those, a few DVD-RAM discs and save the DV and
m2t files to both.
Good plan?
Yep, way to go IMO.
J
Justin
sam said:Yep, way to go IMO.
Now why are DVD-RAMS better for the long term?
S
sam
Justin said:Now why are DVD-RAMS better for the long term?
The writes are checked better when they are written.
They arent necessarily better in the sense of the media chemistry being better in the long term.
S
Svend Olaf Mikkelsen
I recently tried to read an old Quantum 120MB HD that was working fine
when I put it away in my cupboard many years ago. Now I'm seeing a
whole bunch of read errors.
Which BIOS or ATA error codes?
A
Arno Wagner
Trivially avoidable by writing more than one copy.
Doubling effort is never trivial.
Corse it wont, its WAY past its useby date.
And once again, you know nothing.
You can protect yourself against that trivially by writing
that stuff to a hard drive too.
See above.
A
Arno Wagner
Previously Justin said:sam wrote:
Now why are DVD-RAMS better for the long term?
Because they use Phase-Change technology, which is almost as
good as MID technology.
Arno
S
sam
Arno Wagner said:Doubling effort is never trivial.
Wrong, as always.
And once again, you know nothing.
How odd that the entire industry doesnt either.
See above.
Completely useless, as always from you.
S
Svend Olaf Mikkelsen
I thought it was one of these but I just Scandisked them with a
thorough surface scan and found no errors:
Model ID QUANTUM LPS210A
Parameters 723 cyl, 15 heads, 38 sect/track
LBA Sectors 412109
Buffer 98 KB (Dual Ported, Read Ahead)
Max. PIO Transfer Mode PIO 3
Max. UDMA Transfer Mode Not Supported
Unformatted Capacity 201 MB
Model ID QUANTUM ELS127A
Parameters 919 cyl, 16 heads, 17 sect/track
LBA Sectors 0
Buffer 32 KB (Dual Ported, Read Ahead)
Max. PIO Transfer Mode PIO 2
Max. UDMA Transfer Mode Not Supported
Unformatted Capacity 122 MB
They still have my old DOS 6.22 and Windows 3.1/3.11 stuff on them.
The software was installed in 1995 and 1997, but the HDDs looks like
they may have been manufactured in 1994 and 1992, respectively
(judging by the date codes on the ICs). The 210MB HD has noisy
bearings but the other one still runs quiet.
I suspect I threw the faulty HDD away, so I can't say exactly how I
determined that it had bad sectors. Anyway, I believe it was a Quantum
LP drive of some sort, so it would have predated SMART.
- Franc Zabkar
One reason I asked for error codes, is that for some old ATA disks, a
newer BIOS (or operating system or external disk box) is not able to
detect the disk, or does not detect the disk correctly. There are
different variants of this problem.
One example is a "Conner Peripherals 40MB - CP3046" disk. The system
BIOS sees the disk, but reports an error, and does not provide a BIOS
disk number. The disk can be accessed using ATA commands. Using the
Findbad program, I have for the first cylinders:
FindBad, version 1.6. Copyright Svend Olaf Mikkelsen, 2007.
Searches for bad sectors.
OS: DOS 7.10
Disk: PM Cylinders: 65 Heads: 32 Sectors: 40 MB: 41
IDE CHS: 1053/2/40 CTM: 1053/2/40 IDE MB: 41
User sectors: 84240
Start cylinder: 0 End cylinder: 10 First
Only the first bad sector in each cylinder will be shown.
--------- CHS ----- LBA Code
0 0 27 26 10
1 0 27 1306 10
2 0 27 2586 10
3 0 27 3866 10
4 0 27 5146 10
5 0 27 6426 10
6 0 27 7706 10
7 0 27 8986 10
8 0 27 10266 10
9 0 27 11546 10
10 0 27 12826 10
This is ATA error code hexadecimal 10 "ID not found".
The disk however is OK (as new), and the file system can be read
correctly. The disk just needs to be accessed using a 4 heads, 26
sectors translation. The disk probably has a "disk type" number, which
could be entered in a BIOS from that time, or the 4 heads, 26 sectors
geometry could be manually set.
Generally I would say, that if important data are to be read from an
old disk, it should be done using read only methods, and not using an
operating system that will update file access times during read. This
could introduce bad sectors.
For the disk in question, the output from my Identify program is as
follows. The geometry reported cannot be used for accessing the disk.
Identify, version 1.3.
Primary Master
0 0x0A5A General configuration bit significant information
0 Bit 0: Reserved
1 Bit 1: Retired
0 Bit 2: Response incomplete
3 Bit 5-3: Retired
1 Bit 6: 1=not removable controller and/or device
0 Bit 7: 1=removable media device
0A Bit 14-8: Retired
0 Bit 15: 0=ATA device
1 1053 Number of logical cylinder
2 0 Specific configuration
3 2 Number of logical heads
4 25297 Retired
5 617 Retired
6 40 Number of logical sectors per logical block
7 50 Reserved for assignment by the CompactFlash Association
8 12 Reserved for assignment by the CompactFlash Association
9 0 Retired
10 Serial number (20 ASCII characters)
00000000000000000000
20 3 Retired
21 64 Retired
22 4 Obsolete. (Vendor specific bytes at read/write long)
23 T2.28B Firmware revision (8 ASCII characters)
27 Model number (40 ASCII characters)
Conner Peripherals 40MB - CP3046
47 0x0040 Bit 15-8: 0x80 Bit 7-0: Maximum multiple
48 0 Reserved
49 0x0001 Capatibilites
01 Bit 7-0: Retired
0 Bit 8: Must be 0
0 Bit 9: Must be 0
0 Bit 10: IORDY may be disabled
0 Bit 11: IORDY supported, 0: IORDY may be
supported
0 Bit 12: Reserved for Identify Packet Device
0 Bit 13: Standby timer values are supported
0 Bit 15-14: Reserved for Identify Packet Device
50 0x0000 Capabilities
0 Bit 0: 1 for device specific Standby minimum
0000 Bit 13-1: Reserved
0 Bit 14: Shall be set to 1
0 Bit 15: Shall be cleared to 0
51 0x0000 Obsolete. (PIO timing)
52 0x0000 Obsolete. (DMA timing)
53 0x0000 Bit 0: Word 54-58 valid
Bit 1: Word 64-70 valid
Bit 2: Word 88 valid
54 0 Number of current logical cylinders
55 0 Number of current logical heads
56 0 Number of current logical sectors per track
57 0 Current capacity in sectors
59 0x0000 Bit 8: Valid Bit 7-0: Current multiple
60 0 Total number of user addressable sectors (LBA mode
only)
62 0 Obsolete
63 0x0000 Bit 10-0: Multiword DMA
64 0x0000 Bit 7-0: Advanced PIO modes supported
65 0 Minimum Multiword DMA transfer cycle time per word
66 0 Manufacturer's recommended Multiword DMA transfer cycle
time
67 0 Minimum PIO transfer cycle time without flow control
68 0 Minimum PIO transfer cycle time with IORDY flow control
69 0 Reserved (for future command overlap and queuing)
70 0 Reserved (for future command overlap and queuing)
80 0x0000 Major version number
81 0 Minor version number
82 0x0000 Command set supported
83 0x0000 Command sets supported
84 0x0000 Command set/feature supported extension
85 0x0000 Command set/feature enabled
86 0x0000 Command set/feature enabled
87 0x0000 Command set/feature default
88 0x0000 Ultra DMA
89 0x0000 Time required for security erase unit completion
Bit 0-7 * 2: 0
90 0 Time required for Enhanced security erase completion
91 0 Current advanced power management value
92 0x0000 Master Password Revision Code
93 0x0000 Hardware reset result
93 0x0000 Acoustic management
Bit 15-8: Recommended Bit 7-0: Current
127 0x0000 Removeable Media Status Notification feature set
support
128 0x0000 Security status
The above interpretation is mostly based
on ATA/ATAPI-5 documentation.
J
Justin
sam said:The writes are checked better when they are written.
They arent necessarily better in the sense of the media chemistry being better in the long term.
Actually DVD-RAM won't work - not enough space. I'm dealing with 20 gig
DV and m2t files.
S
sam
Justin said:sam wrote
Actually DVD-RAM won't work - not enough space. I'm dealing with 20
gig DV and m2t files.
Just use 4/8
You dont need to keep writing them, just write the new ones to a pair of DVDs etc.
J
Justin
sam said:Just use 4/8
You dont need to keep writing them, just write the new ones to a pair of DVDs etc.
I suppose I could split each file up. Pain in the ass, but it can be done.
they make dual layer DVD-RAMs?
S
sam
Justin said:I suppose I could split each file up. Pain in the ass, but it can be done.
The better software like Roxio EMC splits the files to mulitiple DVDs auto.
they make dual layer DVD-RAMs?
Nope.
http://en.wikipedia.org/wiki/DVD-RAM
M
Michael Cecil
I suppose I could split each file up. Pain in the ass, but it can be done.
I'd create Rar files using just the plain storage method and then create
parity files for each group of files you store to each disk. That way if
you do get read errors way down the road, you could use the parity files
to recover the lost files. Of course, that will take up some space too
but that's the cost for certainty.
they make dual layer DVD-RAMs?
Not sure.
A
Arno Wagner
Previously Justin said:I suppose I could split each file up. Pain in the ass, but it can be done.
they make dual layer DVD-RAMs?
Not possible. Buyt you can get dual-sides ones. They need manual
turning though.
Arno
F
Folkert Rienstra
Eric Gisin wrote in
Use a USB-SATA converter.
You mean you don't have an 8" drive sitting in a box?
Nonsense. All HD players still do DVD and CD formats.
You have adapters from the original SCSI-1 connnectors to SCSI-3?
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