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etabeta
Reged: 08/25/04
Posts: 2035
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Re: MAME 0.145u1
02/20/12 01:39 PM


> thanks.
> do I really need to update my current CHD files ? I'm asking because I just tried
> vaportrx without updating the CHD file and it still works.
>
> also, I used chdman to update the file and it got bigger... I thought this new header
> version would make CHD files smaller.

no. updating chds to v5 will only save some space (how much depends on the CHD, and Laserdisk will save less than others), but v4 CHDs will remain fully compatible for long time

the only exception is for MESS CHD containing hard disk images for PC or Mac drivers: those CHDs needs to be writeable for the emulated OS to write on them, and therefore they need to be updated because v4 compatibility is read only.

summarizing: read-only CHDs (*all* MAME ones and the MESS ones containing CD dumps) do not need to be updated unless you want to see how much space you can save; writeable CHDs (MESS one for emulated HDs) need to be updated to keep working







Entire thread
Subject Posted by Posted on
* MAME 0.145u1 redk9258 02/19/12 06:23 PM
. * Re: MAME 0.145u1 kevenz  02/28/12 05:23 AM
. * Re: MAME 0.145u1 B2K24  02/28/12 06:29 AM
. * Re: MAME 0.145u1 CiroConsentino  02/22/12 04:20 PM
. * Re: MAME 0.145u1 etabeta  02/22/12 07:31 PM
. * Re: MAME 0.145u1 CiroConsentino  02/22/12 08:49 PM
. * Re: MAME 0.145u1 Doosh  02/20/12 09:20 PM
. * Re: MAME 0.145u1 AaronGiles  02/20/12 09:29 PM
. * Re: MAME 0.145u1 Llaffer  02/22/12 12:32 AM
. * Re: MAME 0.145u1 B2K24  02/22/12 02:23 AM
. * Re: MAME 0.145u1 Anonymous  02/20/12 10:48 PM
. * Re: MAME 0.145u1 etabeta  02/20/12 09:24 PM
. * Are the CHD changes safe or is it recommended to wait? Pr3tty F1y  02/20/12 07:51 PM
. * Re: Are the CHD changes safe or is it recommended to wait? etabeta  02/20/12 07:59 PM
. * Re: Are the CHD changes safe or is it recommended to wait? krick  02/21/12 04:53 AM
. * Re: Are the CHD changes safe or is it recommended to wait? etabeta  02/21/12 12:00 PM
. * Re: Are the CHD changes safe or is it recommended to wait? R. Belmont  02/21/12 09:57 PM
. * current chdman state... etabeta  02/22/12 10:57 AM
. * Re: current chdman state... R. Belmont  02/22/12 09:41 PM
. * Re: current chdman state... SmitdoggAdministrator  02/22/12 10:11 PM
. * Re: current chdman state... B2K24  02/22/12 10:35 PM
. * Re: current chdman state... SmitdoggAdministrator  02/22/12 10:37 PM
. * Re: current chdman state... Naoki  02/23/12 12:43 AM
. * Re: current chdman state... SmitdoggAdministrator  02/23/12 12:45 AM
. * Re: current chdman state... Naoki  02/23/12 02:10 AM
. * Re: Are the CHD changes safe or is it recommended to wait? BIOS-D  02/21/12 05:25 AM
. * Re: Are the CHD changes safe or is it recommended to wait? R. Belmont  02/21/12 11:03 PM
. * Re: Are the CHD changes safe or is it recommended to wait? Pr3tty F1y  02/21/12 11:56 PM
. * Re: Are the CHD changes safe or is it recommended to wait? CiroConsentino  02/22/12 01:18 AM
. * Re: MAME 0.145u1 CiroConsentino  02/20/12 01:35 PM
. * Re: MAME 0.145u1 krick  02/20/12 05:36 PM
. * Re: MAME 0.145u1 Sune  02/20/12 06:08 PM
. * Re: MAME 0.145u1 TafoidAdministrator  02/20/12 05:43 PM
. * Re: MAME 0.145u1 etabeta  02/20/12 01:39 PM
. * Re: MAME 0.145u1 CiroConsentino  02/20/12 06:01 PM
. * chd update trouble Sune  02/20/12 04:05 AM
. * Re: chd update trouble xibic  02/20/12 02:00 PM
. * Re: chd update trouble Sune  02/20/12 02:43 PM
. * Re: chd update trouble etabeta  02/20/12 02:53 PM
. * Re: chd update trouble Sune  02/20/12 03:31 PM
. * Re: chd update trouble redk9258  02/20/12 04:46 AM
. * Re: MAME 0.145u1 CiroConsentino  02/20/12 01:05 AM
. * CHDMAN Naoki  02/19/12 10:20 PM
. * CHDs inside ZIPs is missing... MASH  02/19/12 10:41 PM
. * Re: CHDs inside ZIPs is missing... redk9258  02/19/12 11:22 PM
. * Re: Test it! MASH  02/19/12 11:32 PM
. * Re: Test it! Naoki  02/20/12 12:32 AM
. * MAME_0.145u1b_32-bit... redk9258  02/19/12 08:36 PM
. * Re: MAME_0.145u1b_32-bit... KingTut  02/19/12 08:58 PM
. * MAME_0.145u1b_64-bit... redk9258  02/19/12 08:27 PM
. * Re: MAME_0.145u1b_64-bit... Dullaron  02/21/12 03:50 AM
. * Re: MAME_0.145u1b_64-bit... redk9258  02/21/12 04:06 AM
. * Re: MAME_0.145u1b_64-bit... CiroConsentino  02/20/12 12:31 PM
. * Thank You (nt) Trebor  02/20/12 05:14 AM
. * Re: MAME 0.145u1 belegdol  02/19/12 08:13 PM
. * Re: MAME 0.145u1 Cyberzinho Punk  02/19/12 08:16 PM
. * Re: MAME 0.145u1 R. Belmont  02/19/12 10:51 PM
. * Re: MAME 0.145u1 belegdol  02/19/12 06:43 PM
. * Re: MAME 0.145u1 redk9258  02/19/12 07:06 PM
. * Re: MAME 0.145u1 Kale  02/19/12 07:30 PM
. * Re: MAME 0.145u1 redk9258  02/19/12 07:38 PM
. * Re: MAME 0.145u1 Kale  02/19/12 07:44 PM
. * Re: MAME 0.145u1 StevieWunderful  02/19/12 11:51 PM

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