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How to stop Ext. HDD from waking when saving something to iMac
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<blockquote data-quote="Slydude" data-source="post: 1650730" data-attributes="member: 131855"><p>I don't think there is a way to do this. If I recall correctly this used to be referred to as polling. In essence the OS used to check periodically to see what drives were attached.</p><p></p><p>I understand that you want to choose where the file will be saved before the drive spins up. The problem is, from a program behavior standpoint that could be a royal pain if the user tires to choose a drive that isn't there. </p><p></p><p>I'm not a programmer but here are the steps that I think would be needed for both procedures. I think you'll see the potential complications.</p><p></p><p>Current Method: Attached drives </p><p>1. System has been "polled" for a list of attached devices</p><p>2. Save Dialog is presented (only valid locations are presented to the user)</p><p>3. File saved (errors generated if improper filename is chosen or insufficient space on drive)</p><p></p><p>In this method polling is not constant but occurs when the drive is mounted and periodically as needed (Save dialogs, Open File dialogs, updated list when additional drives attached).</p><p></p><p>Alternate Method based on your desire to have the drive spin up only when needed.</p><p>1. User chooses to save a file </p><p>2. User has to be asked for a drive I'm not sure how that could be done without either a pre-defined list or the user inputting the name of the drive. </p><p>4. System has to determine if drive is attached If not user has to either choose a new location or attach the drive. From a program stand point each of these would likely be different routines.</p><p>5. File saved (errors generated if improper filename is chosen or insufficient space on drive)</p><p></p><p>I know that was a bit long-winded. Hope it wasn't too confusing.</p></blockquote><p></p>
[QUOTE="Slydude, post: 1650730, member: 131855"] I don't think there is a way to do this. If I recall correctly this used to be referred to as polling. In essence the OS used to check periodically to see what drives were attached. I understand that you want to choose where the file will be saved before the drive spins up. The problem is, from a program behavior standpoint that could be a royal pain if the user tires to choose a drive that isn't there. I'm not a programmer but here are the steps that I think would be needed for both procedures. I think you'll see the potential complications. Current Method: Attached drives 1. System has been "polled" for a list of attached devices 2. Save Dialog is presented (only valid locations are presented to the user) 3. File saved (errors generated if improper filename is chosen or insufficient space on drive) In this method polling is not constant but occurs when the drive is mounted and periodically as needed (Save dialogs, Open File dialogs, updated list when additional drives attached). Alternate Method based on your desire to have the drive spin up only when needed. 1. User chooses to save a file 2. User has to be asked for a drive I'm not sure how that could be done without either a pre-defined list or the user inputting the name of the drive. 4. System has to determine if drive is attached If not user has to either choose a new location or attach the drive. From a program stand point each of these would likely be different routines. 5. File saved (errors generated if improper filename is chosen or insufficient space on drive) I know that was a bit long-winded. Hope it wasn't too confusing. [/QUOTE]
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