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#297055 - 14/04/2007 18:35 playlist issues post hard drive upgrade
nikko
member

Registered: 15/01/2002
Posts: 122
After getting the "No Hard Disk Found" error, I decided to just do an upgrade on my MK II. I had two 30 GB drives in there prior. I took out both drives and installed a 120 GB drive. Went through the Rio Car Dot Org upgrade instructions. I then put one of the 2 30 GB drives back in there as well. I fired up Emplode. Some of my previous playlists were there. I deleted them and the actual tracks associated with them. I then synced with the player and all seemed to be well. Then I added a few albums via Emplode. Right off the bat I noticed that they don't show up under the Playlists tree. The individual tracks show up under Tracks, the artist under Artist, etc. But nothing under playlists. Furthermore, after syncing with the player, no playlists show up on my Empeg.

Any ideas on what I need to do? Thanks in advance for any help you can provide.

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#297056 - 14/04/2007 20:04 Re: playlist issues post hard drive upgrade [Re: nikko]
wfaulk
carpal tunnel

Registered: 25/12/2000
Posts: 16706
Loc: Raleigh, NC US
First, let's verify that you followed this step:

Quote:
If you are working with large hard disks (40-60 gigs or larger), then the official empeg disk builder linked above might not work. Instead, grab a copy of Mark Lord's Special Disk Builder, which should work with large drives.
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Bitt Faulk

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#297057 - 15/04/2007 14:59 Re: playlist issues post hard drive upgrade [Re: nikko]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31597
Loc: Seattle, WA
Quote:
I then put one of the 2 30 GB drives back in there as well. I fired up Emplode. Some of my previous playlists were there.


That's your problem. You had a pair of drives, and when you've got a matched pair, the player splits its data randomly between the two drives. By putting back one of the two old drives without formatting it, you completely screwed up the database.

You MUST FORMAT that second drive, not just delete the playlists you think you see in emplode.

And, since you've already tried synching with this half-messed up data in the player, you're now back to needing to format BOTH drives, not just the old one.
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Tony Fabris

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#297058 - 16/04/2007 03:09 Re: playlist issues post hard drive upgrade [Re: tfabris]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31597
Loc: Seattle, WA
Now that I've got a few extra minutes to reply, I'll clarify in more detail.

The player does not store the files onto its hard disks in a nice, clean, easy-to-interpret manner. It stores them as FIDs, and each song file, as well as each playlist, gets two FIDs. One is a data header, the other is the actual data.

To further complicate matters, emplode makes no attempt (in a two drive system) to keep a given set of songs and the corresponding playlists that contain those songs, on the same disk drive. In fact, it drops the songs and playlists onto each of the two drives somewhat randomly.

To even further complicate matters, when emplode is dropping songs and playlists onto the drives, I don't think it even makes an attempt to keep the "0" fid and the "1" fid on the same disk drive. Meaning, that the data header for a file, and its corresponding actual data, might end up on two different drives.

What this means: if you feed the player one-half of an old matched pair of loaded-up drives, you will be getting a shotgun random half of the data that was on the player. Including the very sticky situations of data headers without the corresponding actual data, playlists that point to songs that no longer exist, and songs that existed in playlists that no longer exist.

Finally, if you attempt to pair up an old data-laden drive with a new drive that has at least some data on it (I don't know if your big drive had been fed any songs prior to the old drive being added back in), you will get the extremely sticky situation of more than one file that has the same FID. And there's not even any guarantee that the two files sharing the same FID would even be the same type of file (playlist/song).

So, as you can see, by putting half of a matched-pair back into the player, you've really toasted the database.

If you hadn't tried to synch any new songs into place after having done that, I would say you might be able to get away with just wiping the old drive clean (without erasing the new drive), deleting the database files, and doing another synch. But since you said you tried adding some more songs after you noticed troubles, then all bets are off and I'd say it's time to dust off and nuke the site from orbit. It's the only way to be sure.

There's one final thing that's worrying me, which is: You said you did this upgrade because you started noticing disk troubles with your existing disks. But you didn't say what steps you'd taken to repair those troubles prior to adding in the new disk drive. So I'm worried that we might be dealing with multiple simultaneous problems.
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Tony Fabris

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#297059 - 16/04/2007 03:15 Re: playlist issues post hard drive upgrade [Re: tfabris]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31597
Loc: Seattle, WA
Oh, and:

If you were sticking that old drive back into the player because you wanted to save all of your old songs from the old disk drives, there are instructions in the disk upgrade guide on how to do this. It has very specific instructions on how to use the shell prompt to copy the data from *BOTH* of the old disk drives onto the new, larger disk drive. But you would have to have done *both* for it to work. Now that you've messed up one of those old disk drives by doing some deletes and synchs, you've now lost out on the opportunity to do that as well.
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Tony Fabris

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#297060 - 16/04/2007 04:46 Re: playlist issues post hard drive upgrade [Re: tfabris]
Roger
carpal tunnel

Registered: 18/01/2000
Posts: 5683
Loc: London, UK
Quote:
I don't think it even makes an attempt to keep the "0" fid and the "1" fid on the same disk drive.


It doesn't. They can end up on separate drives.
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-- roger

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