[if !mso]>[if gte mso 9]>

Re: [edk2] How to access/Read/Eject USB CD/DVD drive

Subject: Re: [edk2] How to access/Read/Eject USB CD/DVD drive

From: "Suraj Joshi" <suraj.joshi@zensar.in>

To: <edk2-devel@lists.sourceforge.net>

Date: 2011-11-30 19:44:16

Hi Sergey,


You mean to say I can use same protocol i.e. EFI_EXT_SCSI_PASS_THRU_PROTOCOL for ejecting CD from USB CD-ROM.


Please confirm my understanding.




Suraj Joshi


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From: Sergey Isakov [mailto:isakov-sl@bk.ru]
Sent: Wednesday, November 30, 2011 11:28 AM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] How to access/Read/Eject USB CD/DVD drive


Hi Suraj,


You are in the same boat as me.

USB attached CDROM is physically the same SATA CDROM and might be ejected by the same command. The only problem is to transfer the packet from UsbIo protocol to CDROM device. But UsbMassStorage.... :(





On 30.11.2011, at 7:40, Suraj Joshi wrote:

Hello experts,


I am developing an application for reading block of data from USB CD/DVD drives, also ejecting the same drive using EFI_USB_IO_PROTOCOL.


I already succeeded in reading block of data/eject from built in CD/DVD drives using EFI_EXT_SCSI_PASS_THRU_PROTOCOL.


Please let me know if any other protocol is used for reading / eject CD/DVD from USB attached ROM.



Thanks in adv.




Suraj Joshi







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